diff --git a/generation_config.yaml b/generation_config.yaml
index 2a237bba5603..6bf1a0f4e627 100644
--- a/generation_config.yaml
+++ b/generation_config.yaml
@@ -1,5 +1,5 @@
-gapic_generator_version: 2.52.0
-googleapis_commitish: 04132de0b952ee921d91a2583915dbd82d10cd3c
+gapic_generator_version: 2.53.0
+googleapis_commitish: 9605bff3d36fbdb1227b26bce68258c5f00815e4
 libraries_bom_version: 26.54.0
 
 # the libraries are ordered with respect to library name, which is
diff --git a/java-aiplatform/google-cloud-aiplatform/src/test/java/com/google/cloud/aiplatform/v1/PredictionServiceClientTest.java b/java-aiplatform/google-cloud-aiplatform/src/test/java/com/google/cloud/aiplatform/v1/PredictionServiceClientTest.java
index ab4b6e162fe5..6e1615e743ae 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/test/java/com/google/cloud/aiplatform/v1/PredictionServiceClientTest.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/test/java/com/google/cloud/aiplatform/v1/PredictionServiceClientTest.java
@@ -48,6 +48,7 @@
 import com.google.protobuf.Any;
 import com.google.protobuf.ByteString;
 import com.google.protobuf.FieldMask;
+import com.google.protobuf.Timestamp;
 import com.google.protobuf.Value;
 import io.grpc.StatusRuntimeException;
 import java.io.IOException;
@@ -878,6 +879,8 @@ public void generateContentTest() throws Exception {
         GenerateContentResponse.newBuilder()
             .addAllCandidates(new ArrayList<Candidate>())
             .setModelVersion("modelVersion212437359")
+            .setCreateTime(Timestamp.newBuilder().build())
+            .setResponseId("responseId-633138884")
             .setPromptFeedback(GenerateContentResponse.PromptFeedback.newBuilder().build())
             .setUsageMetadata(GenerateContentResponse.UsageMetadata.newBuilder().build())
             .build();
@@ -922,6 +925,8 @@ public void streamGenerateContentTest() throws Exception {
         GenerateContentResponse.newBuilder()
             .addAllCandidates(new ArrayList<Candidate>())
             .setModelVersion("modelVersion212437359")
+            .setCreateTime(Timestamp.newBuilder().build())
+            .setResponseId("responseId-633138884")
             .setPromptFeedback(GenerateContentResponse.PromptFeedback.newBuilder().build())
             .setUsageMetadata(GenerateContentResponse.UsageMetadata.newBuilder().build())
             .build();
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/GenerateContentResponse.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/GenerateContentResponse.java
index c3815fe745d5..ad7093199cec 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/GenerateContentResponse.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/GenerateContentResponse.java
@@ -41,6 +41,7 @@ private GenerateContentResponse(com.google.protobuf.GeneratedMessageV3.Builder<?
   private GenerateContentResponse() {
     candidates_ = java.util.Collections.emptyList();
     modelVersion_ = "";
+    responseId_ = "";
   }
 
   @java.lang.Override
@@ -4664,6 +4665,108 @@ public com.google.protobuf.ByteString getModelVersionBytes() {
     }
   }
 
+  public static final int CREATE_TIME_FIELD_NUMBER = 12;
+  private com.google.protobuf.Timestamp createTime_;
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Timestamp when the request is made to the server.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   *
+   * @return Whether the createTime field is set.
+   */
+  @java.lang.Override
+  public boolean hasCreateTime() {
+    return ((bitField0_ & 0x00000001) != 0);
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Timestamp when the request is made to the server.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   *
+   * @return The createTime.
+   */
+  @java.lang.Override
+  public com.google.protobuf.Timestamp getCreateTime() {
+    return createTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : createTime_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Timestamp when the request is made to the server.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder() {
+    return createTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : createTime_;
+  }
+
+  public static final int RESPONSE_ID_FIELD_NUMBER = 13;
+
+  @SuppressWarnings("serial")
+  private volatile java.lang.Object responseId_ = "";
+  /**
+   *
+   *
+   * <pre>
+   * Output only. response_id is used to identify each response. It is the
+   * encoding of the event_id.
+   * </pre>
+   *
+   * <code>string response_id = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+   *
+   * @return The responseId.
+   */
+  @java.lang.Override
+  public java.lang.String getResponseId() {
+    java.lang.Object ref = responseId_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      responseId_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Output only. response_id is used to identify each response. It is the
+   * encoding of the event_id.
+   * </pre>
+   *
+   * <code>string response_id = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+   *
+   * @return The bytes for responseId.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getResponseIdBytes() {
+    java.lang.Object ref = responseId_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      responseId_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
   public static final int PROMPT_FEEDBACK_FIELD_NUMBER = 3;
   private com.google.cloud.aiplatform.v1.GenerateContentResponse.PromptFeedback promptFeedback_;
   /**
@@ -4683,7 +4786,7 @@ public com.google.protobuf.ByteString getModelVersionBytes() {
    */
   @java.lang.Override
   public boolean hasPromptFeedback() {
-    return ((bitField0_ & 0x00000001) != 0);
+    return ((bitField0_ & 0x00000002) != 0);
   }
   /**
    *
@@ -4743,7 +4846,7 @@ public com.google.cloud.aiplatform.v1.GenerateContentResponse.PromptFeedback get
    */
   @java.lang.Override
   public boolean hasUsageMetadata() {
-    return ((bitField0_ & 0x00000002) != 0);
+    return ((bitField0_ & 0x00000004) != 0);
   }
   /**
    *
@@ -4798,15 +4901,21 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     for (int i = 0; i < candidates_.size(); i++) {
       output.writeMessage(2, candidates_.get(i));
     }
-    if (((bitField0_ & 0x00000001) != 0)) {
+    if (((bitField0_ & 0x00000002) != 0)) {
       output.writeMessage(3, getPromptFeedback());
     }
-    if (((bitField0_ & 0x00000002) != 0)) {
+    if (((bitField0_ & 0x00000004) != 0)) {
       output.writeMessage(4, getUsageMetadata());
     }
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(modelVersion_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 11, modelVersion_);
     }
+    if (((bitField0_ & 0x00000001) != 0)) {
+      output.writeMessage(12, getCreateTime());
+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(responseId_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 13, responseId_);
+    }
     getUnknownFields().writeTo(output);
   }
 
@@ -4819,15 +4928,21 @@ public int getSerializedSize() {
     for (int i = 0; i < candidates_.size(); i++) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(2, candidates_.get(i));
     }
-    if (((bitField0_ & 0x00000001) != 0)) {
+    if (((bitField0_ & 0x00000002) != 0)) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(3, getPromptFeedback());
     }
-    if (((bitField0_ & 0x00000002) != 0)) {
+    if (((bitField0_ & 0x00000004) != 0)) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, getUsageMetadata());
     }
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(modelVersion_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(11, modelVersion_);
     }
+    if (((bitField0_ & 0x00000001) != 0)) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(12, getCreateTime());
+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(responseId_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(13, responseId_);
+    }
     size += getUnknownFields().getSerializedSize();
     memoizedSize = size;
     return size;
@@ -4846,6 +4961,11 @@ public boolean equals(final java.lang.Object obj) {
 
     if (!getCandidatesList().equals(other.getCandidatesList())) return false;
     if (!getModelVersion().equals(other.getModelVersion())) return false;
+    if (hasCreateTime() != other.hasCreateTime()) return false;
+    if (hasCreateTime()) {
+      if (!getCreateTime().equals(other.getCreateTime())) return false;
+    }
+    if (!getResponseId().equals(other.getResponseId())) return false;
     if (hasPromptFeedback() != other.hasPromptFeedback()) return false;
     if (hasPromptFeedback()) {
       if (!getPromptFeedback().equals(other.getPromptFeedback())) return false;
@@ -4871,6 +4991,12 @@ public int hashCode() {
     }
     hash = (37 * hash) + MODEL_VERSION_FIELD_NUMBER;
     hash = (53 * hash) + getModelVersion().hashCode();
+    if (hasCreateTime()) {
+      hash = (37 * hash) + CREATE_TIME_FIELD_NUMBER;
+      hash = (53 * hash) + getCreateTime().hashCode();
+    }
+    hash = (37 * hash) + RESPONSE_ID_FIELD_NUMBER;
+    hash = (53 * hash) + getResponseId().hashCode();
     if (hasPromptFeedback()) {
       hash = (37 * hash) + PROMPT_FEEDBACK_FIELD_NUMBER;
       hash = (53 * hash) + getPromptFeedback().hashCode();
@@ -5021,6 +5147,7 @@ private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
     private void maybeForceBuilderInitialization() {
       if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {
         getCandidatesFieldBuilder();
+        getCreateTimeFieldBuilder();
         getPromptFeedbackFieldBuilder();
         getUsageMetadataFieldBuilder();
       }
@@ -5038,6 +5165,12 @@ public Builder clear() {
       }
       bitField0_ = (bitField0_ & ~0x00000001);
       modelVersion_ = "";
+      createTime_ = null;
+      if (createTimeBuilder_ != null) {
+        createTimeBuilder_.dispose();
+        createTimeBuilder_ = null;
+      }
+      responseId_ = "";
       promptFeedback_ = null;
       if (promptFeedbackBuilder_ != null) {
         promptFeedbackBuilder_.dispose();
@@ -5103,14 +5236,21 @@ private void buildPartial0(com.google.cloud.aiplatform.v1.GenerateContentRespons
       }
       int to_bitField0_ = 0;
       if (((from_bitField0_ & 0x00000004) != 0)) {
-        result.promptFeedback_ =
-            promptFeedbackBuilder_ == null ? promptFeedback_ : promptFeedbackBuilder_.build();
+        result.createTime_ = createTimeBuilder_ == null ? createTime_ : createTimeBuilder_.build();
         to_bitField0_ |= 0x00000001;
       }
       if (((from_bitField0_ & 0x00000008) != 0)) {
+        result.responseId_ = responseId_;
+      }
+      if (((from_bitField0_ & 0x00000010) != 0)) {
+        result.promptFeedback_ =
+            promptFeedbackBuilder_ == null ? promptFeedback_ : promptFeedbackBuilder_.build();
+        to_bitField0_ |= 0x00000002;
+      }
+      if (((from_bitField0_ & 0x00000020) != 0)) {
         result.usageMetadata_ =
             usageMetadataBuilder_ == null ? usageMetadata_ : usageMetadataBuilder_.build();
-        to_bitField0_ |= 0x00000002;
+        to_bitField0_ |= 0x00000004;
       }
       result.bitField0_ |= to_bitField0_;
     }
@@ -5193,6 +5333,14 @@ public Builder mergeFrom(com.google.cloud.aiplatform.v1.GenerateContentResponse
         bitField0_ |= 0x00000002;
         onChanged();
       }
+      if (other.hasCreateTime()) {
+        mergeCreateTime(other.getCreateTime());
+      }
+      if (!other.getResponseId().isEmpty()) {
+        responseId_ = other.responseId_;
+        bitField0_ |= 0x00000008;
+        onChanged();
+      }
       if (other.hasPromptFeedback()) {
         mergePromptFeedback(other.getPromptFeedback());
       }
@@ -5241,13 +5389,13 @@ public Builder mergeFrom(
             case 26:
               {
                 input.readMessage(getPromptFeedbackFieldBuilder().getBuilder(), extensionRegistry);
-                bitField0_ |= 0x00000004;
+                bitField0_ |= 0x00000010;
                 break;
               } // case 26
             case 34:
               {
                 input.readMessage(getUsageMetadataFieldBuilder().getBuilder(), extensionRegistry);
-                bitField0_ |= 0x00000008;
+                bitField0_ |= 0x00000020;
                 break;
               } // case 34
             case 90:
@@ -5256,6 +5404,18 @@ public Builder mergeFrom(
                 bitField0_ |= 0x00000002;
                 break;
               } // case 90
+            case 98:
+              {
+                input.readMessage(getCreateTimeFieldBuilder().getBuilder(), extensionRegistry);
+                bitField0_ |= 0x00000004;
+                break;
+              } // case 98
+            case 106:
+              {
+                responseId_ = input.readStringRequireUtf8();
+                bitField0_ |= 0x00000008;
+                break;
+              } // case 106
             default:
               {
                 if (!super.parseUnknownField(input, extensionRegistry, tag)) {
@@ -5767,6 +5927,320 @@ public Builder setModelVersionBytes(com.google.protobuf.ByteString value) {
       return this;
     }
 
+    private com.google.protobuf.Timestamp createTime_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Timestamp,
+            com.google.protobuf.Timestamp.Builder,
+            com.google.protobuf.TimestampOrBuilder>
+        createTimeBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Timestamp when the request is made to the server.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     *
+     * @return Whether the createTime field is set.
+     */
+    public boolean hasCreateTime() {
+      return ((bitField0_ & 0x00000004) != 0);
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Timestamp when the request is made to the server.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     *
+     * @return The createTime.
+     */
+    public com.google.protobuf.Timestamp getCreateTime() {
+      if (createTimeBuilder_ == null) {
+        return createTime_ == null
+            ? com.google.protobuf.Timestamp.getDefaultInstance()
+            : createTime_;
+      } else {
+        return createTimeBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Timestamp when the request is made to the server.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public Builder setCreateTime(com.google.protobuf.Timestamp value) {
+      if (createTimeBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        createTime_ = value;
+      } else {
+        createTimeBuilder_.setMessage(value);
+      }
+      bitField0_ |= 0x00000004;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Timestamp when the request is made to the server.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public Builder setCreateTime(com.google.protobuf.Timestamp.Builder builderForValue) {
+      if (createTimeBuilder_ == null) {
+        createTime_ = builderForValue.build();
+      } else {
+        createTimeBuilder_.setMessage(builderForValue.build());
+      }
+      bitField0_ |= 0x00000004;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Timestamp when the request is made to the server.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public Builder mergeCreateTime(com.google.protobuf.Timestamp value) {
+      if (createTimeBuilder_ == null) {
+        if (((bitField0_ & 0x00000004) != 0)
+            && createTime_ != null
+            && createTime_ != com.google.protobuf.Timestamp.getDefaultInstance()) {
+          getCreateTimeBuilder().mergeFrom(value);
+        } else {
+          createTime_ = value;
+        }
+      } else {
+        createTimeBuilder_.mergeFrom(value);
+      }
+      if (createTime_ != null) {
+        bitField0_ |= 0x00000004;
+        onChanged();
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Timestamp when the request is made to the server.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public Builder clearCreateTime() {
+      bitField0_ = (bitField0_ & ~0x00000004);
+      createTime_ = null;
+      if (createTimeBuilder_ != null) {
+        createTimeBuilder_.dispose();
+        createTimeBuilder_ = null;
+      }
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Timestamp when the request is made to the server.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public com.google.protobuf.Timestamp.Builder getCreateTimeBuilder() {
+      bitField0_ |= 0x00000004;
+      onChanged();
+      return getCreateTimeFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Timestamp when the request is made to the server.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder() {
+      if (createTimeBuilder_ != null) {
+        return createTimeBuilder_.getMessageOrBuilder();
+      } else {
+        return createTime_ == null
+            ? com.google.protobuf.Timestamp.getDefaultInstance()
+            : createTime_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Timestamp when the request is made to the server.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Timestamp,
+            com.google.protobuf.Timestamp.Builder,
+            com.google.protobuf.TimestampOrBuilder>
+        getCreateTimeFieldBuilder() {
+      if (createTimeBuilder_ == null) {
+        createTimeBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.protobuf.Timestamp,
+                com.google.protobuf.Timestamp.Builder,
+                com.google.protobuf.TimestampOrBuilder>(
+                getCreateTime(), getParentForChildren(), isClean());
+        createTime_ = null;
+      }
+      return createTimeBuilder_;
+    }
+
+    private java.lang.Object responseId_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Output only. response_id is used to identify each response. It is the
+     * encoding of the event_id.
+     * </pre>
+     *
+     * <code>string response_id = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     *
+     * @return The responseId.
+     */
+    public java.lang.String getResponseId() {
+      java.lang.Object ref = responseId_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        responseId_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. response_id is used to identify each response. It is the
+     * encoding of the event_id.
+     * </pre>
+     *
+     * <code>string response_id = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     *
+     * @return The bytes for responseId.
+     */
+    public com.google.protobuf.ByteString getResponseIdBytes() {
+      java.lang.Object ref = responseId_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        responseId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. response_id is used to identify each response. It is the
+     * encoding of the event_id.
+     * </pre>
+     *
+     * <code>string response_id = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     *
+     * @param value The responseId to set.
+     * @return This builder for chaining.
+     */
+    public Builder setResponseId(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      responseId_ = value;
+      bitField0_ |= 0x00000008;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. response_id is used to identify each response. It is the
+     * encoding of the event_id.
+     * </pre>
+     *
+     * <code>string response_id = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearResponseId() {
+      responseId_ = getDefaultInstance().getResponseId();
+      bitField0_ = (bitField0_ & ~0x00000008);
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. response_id is used to identify each response. It is the
+     * encoding of the event_id.
+     * </pre>
+     *
+     * <code>string response_id = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     *
+     * @param value The bytes for responseId to set.
+     * @return This builder for chaining.
+     */
+    public Builder setResponseIdBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+      responseId_ = value;
+      bitField0_ |= 0x00000008;
+      onChanged();
+      return this;
+    }
+
     private com.google.cloud.aiplatform.v1.GenerateContentResponse.PromptFeedback promptFeedback_;
     private com.google.protobuf.SingleFieldBuilderV3<
             com.google.cloud.aiplatform.v1.GenerateContentResponse.PromptFeedback,
@@ -5789,7 +6263,7 @@ public Builder setModelVersionBytes(com.google.protobuf.ByteString value) {
      * @return Whether the promptFeedback field is set.
      */
     public boolean hasPromptFeedback() {
-      return ((bitField0_ & 0x00000004) != 0);
+      return ((bitField0_ & 0x00000010) != 0);
     }
     /**
      *
@@ -5840,7 +6314,7 @@ public Builder setPromptFeedback(
       } else {
         promptFeedbackBuilder_.setMessage(value);
       }
-      bitField0_ |= 0x00000004;
+      bitField0_ |= 0x00000010;
       onChanged();
       return this;
     }
@@ -5865,7 +6339,7 @@ public Builder setPromptFeedback(
       } else {
         promptFeedbackBuilder_.setMessage(builderForValue.build());
       }
-      bitField0_ |= 0x00000004;
+      bitField0_ |= 0x00000010;
       onChanged();
       return this;
     }
@@ -5885,7 +6359,7 @@ public Builder setPromptFeedback(
     public Builder mergePromptFeedback(
         com.google.cloud.aiplatform.v1.GenerateContentResponse.PromptFeedback value) {
       if (promptFeedbackBuilder_ == null) {
-        if (((bitField0_ & 0x00000004) != 0)
+        if (((bitField0_ & 0x00000010) != 0)
             && promptFeedback_ != null
             && promptFeedback_
                 != com.google.cloud.aiplatform.v1.GenerateContentResponse.PromptFeedback
@@ -5898,7 +6372,7 @@ public Builder mergePromptFeedback(
         promptFeedbackBuilder_.mergeFrom(value);
       }
       if (promptFeedback_ != null) {
-        bitField0_ |= 0x00000004;
+        bitField0_ |= 0x00000010;
         onChanged();
       }
       return this;
@@ -5917,7 +6391,7 @@ public Builder mergePromptFeedback(
      * </code>
      */
     public Builder clearPromptFeedback() {
-      bitField0_ = (bitField0_ & ~0x00000004);
+      bitField0_ = (bitField0_ & ~0x00000010);
       promptFeedback_ = null;
       if (promptFeedbackBuilder_ != null) {
         promptFeedbackBuilder_.dispose();
@@ -5941,7 +6415,7 @@ public Builder clearPromptFeedback() {
      */
     public com.google.cloud.aiplatform.v1.GenerateContentResponse.PromptFeedback.Builder
         getPromptFeedbackBuilder() {
-      bitField0_ |= 0x00000004;
+      bitField0_ |= 0x00000010;
       onChanged();
       return getPromptFeedbackFieldBuilder().getBuilder();
     }
@@ -6018,7 +6492,7 @@ public Builder clearPromptFeedback() {
      * @return Whether the usageMetadata field is set.
      */
     public boolean hasUsageMetadata() {
-      return ((bitField0_ & 0x00000008) != 0);
+      return ((bitField0_ & 0x00000020) != 0);
     }
     /**
      *
@@ -6062,7 +6536,7 @@ public Builder setUsageMetadata(
       } else {
         usageMetadataBuilder_.setMessage(value);
       }
-      bitField0_ |= 0x00000008;
+      bitField0_ |= 0x00000020;
       onChanged();
       return this;
     }
@@ -6084,7 +6558,7 @@ public Builder setUsageMetadata(
       } else {
         usageMetadataBuilder_.setMessage(builderForValue.build());
       }
-      bitField0_ |= 0x00000008;
+      bitField0_ |= 0x00000020;
       onChanged();
       return this;
     }
@@ -6101,7 +6575,7 @@ public Builder setUsageMetadata(
     public Builder mergeUsageMetadata(
         com.google.cloud.aiplatform.v1.GenerateContentResponse.UsageMetadata value) {
       if (usageMetadataBuilder_ == null) {
-        if (((bitField0_ & 0x00000008) != 0)
+        if (((bitField0_ & 0x00000020) != 0)
             && usageMetadata_ != null
             && usageMetadata_
                 != com.google.cloud.aiplatform.v1.GenerateContentResponse.UsageMetadata
@@ -6114,7 +6588,7 @@ public Builder mergeUsageMetadata(
         usageMetadataBuilder_.mergeFrom(value);
       }
       if (usageMetadata_ != null) {
-        bitField0_ |= 0x00000008;
+        bitField0_ |= 0x00000020;
         onChanged();
       }
       return this;
@@ -6130,7 +6604,7 @@ public Builder mergeUsageMetadata(
      * </code>
      */
     public Builder clearUsageMetadata() {
-      bitField0_ = (bitField0_ & ~0x00000008);
+      bitField0_ = (bitField0_ & ~0x00000020);
       usageMetadata_ = null;
       if (usageMetadataBuilder_ != null) {
         usageMetadataBuilder_.dispose();
@@ -6151,7 +6625,7 @@ public Builder clearUsageMetadata() {
      */
     public com.google.cloud.aiplatform.v1.GenerateContentResponse.UsageMetadata.Builder
         getUsageMetadataBuilder() {
-      bitField0_ |= 0x00000008;
+      bitField0_ |= 0x00000020;
       onChanged();
       return getUsageMetadataFieldBuilder().getBuilder();
     }
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/GenerateContentResponseOrBuilder.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/GenerateContentResponseOrBuilder.java
index 5e414711a935..e0df821f0ca8 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/GenerateContentResponseOrBuilder.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/GenerateContentResponseOrBuilder.java
@@ -111,6 +111,71 @@ public interface GenerateContentResponseOrBuilder
    */
   com.google.protobuf.ByteString getModelVersionBytes();
 
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Timestamp when the request is made to the server.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   *
+   * @return Whether the createTime field is set.
+   */
+  boolean hasCreateTime();
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Timestamp when the request is made to the server.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   *
+   * @return The createTime.
+   */
+  com.google.protobuf.Timestamp getCreateTime();
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Timestamp when the request is made to the server.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp create_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   */
+  com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Output only. response_id is used to identify each response. It is the
+   * encoding of the event_id.
+   * </pre>
+   *
+   * <code>string response_id = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+   *
+   * @return The responseId.
+   */
+  java.lang.String getResponseId();
+  /**
+   *
+   *
+   * <pre>
+   * Output only. response_id is used to identify each response. It is the
+   * encoding of the event_id.
+   * </pre>
+   *
+   * <code>string response_id = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+   *
+   * @return The bytes for responseId.
+   */
+  com.google.protobuf.ByteString getResponseIdBytes();
+
   /**
    *
    *
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceProto.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceProto.java
index c28adb6359f7..65096678b143 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceProto.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceProto.java
@@ -147,222 +147,225 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "aiplatform/v1/explanation.proto\032%google/"
           + "cloud/aiplatform/v1/tool.proto\032&google/c"
           + "loud/aiplatform/v1/types.proto\032\034google/p"
-          + "rotobuf/struct.proto\"\252\001\n\016PredictRequest\022"
-          + "<\n\010endpoint\030\001 \001(\tB*\340A\002\372A$\n\"aiplatform.go"
-          + "ogleapis.com/Endpoint\022.\n\tinstances\030\002 \003(\013"
-          + "2\026.google.protobuf.ValueB\003\340A\002\022*\n\nparamet"
-          + "ers\030\003 \001(\0132\026.google.protobuf.Value\"\200\002\n\017Pr"
-          + "edictResponse\022+\n\013predictions\030\001 \003(\0132\026.goo"
-          + "gle.protobuf.Value\022\031\n\021deployed_model_id\030"
-          + "\002 \001(\t\0226\n\005model\030\003 \001(\tB\'\340A\003\372A!\n\037aiplatform"
-          + ".googleapis.com/Model\022\035\n\020model_version_i"
-          + "d\030\005 \001(\tB\003\340A\003\022\037\n\022model_display_name\030\004 \001(\t"
-          + "B\003\340A\003\022-\n\010metadata\030\006 \001(\0132\026.google.protobu"
-          + "f.ValueB\003\340A\003\"z\n\021RawPredictRequest\022<\n\010end"
-          + "point\030\001 \001(\tB*\340A\002\372A$\n\"aiplatform.googleap"
-          + "is.com/Endpoint\022\'\n\thttp_body\030\002 \001(\0132\024.goo"
-          + "gle.api.HttpBody\"\200\001\n\027StreamRawPredictReq"
-          + "uest\022<\n\010endpoint\030\001 \001(\tB*\340A\002\372A$\n\"aiplatfo"
-          + "rm.googleapis.com/Endpoint\022\'\n\thttp_body\030"
-          + "\002 \001(\0132\024.google.api.HttpBody\"\300\001\n\024DirectPr"
-          + "edictRequest\022<\n\010endpoint\030\001 \001(\tB*\340A\002\372A$\n\""
-          + "aiplatform.googleapis.com/Endpoint\0222\n\006in"
-          + "puts\030\002 \003(\0132\".google.cloud.aiplatform.v1."
-          + "Tensor\0226\n\nparameters\030\003 \001(\0132\".google.clou"
-          + "d.aiplatform.v1.Tensor\"\204\001\n\025DirectPredict"
-          + "Response\0223\n\007outputs\030\001 \003(\0132\".google.cloud"
-          + ".aiplatform.v1.Tensor\0226\n\nparameters\030\002 \001("
-          + "\0132\".google.cloud.aiplatform.v1.Tensor\"{\n"
-          + "\027DirectRawPredictRequest\022<\n\010endpoint\030\001 \001"
-          + "(\tB*\340A\002\372A$\n\"aiplatform.googleapis.com/En"
-          + "dpoint\022\023\n\013method_name\030\002 \001(\t\022\r\n\005input\030\003 \001"
-          + "(\014\"*\n\030DirectRawPredictResponse\022\016\n\006output"
-          + "\030\001 \001(\014\"\320\001\n\032StreamDirectPredictRequest\022<\n"
-          + "\010endpoint\030\001 \001(\tB*\340A\002\372A$\n\"aiplatform.goog"
-          + "leapis.com/Endpoint\0227\n\006inputs\030\002 \003(\0132\".go"
-          + "ogle.cloud.aiplatform.v1.TensorB\003\340A\001\022;\n\n"
-          + "parameters\030\003 \001(\0132\".google.cloud.aiplatfo"
-          + "rm.v1.TensorB\003\340A\001\"\212\001\n\033StreamDirectPredic"
-          + "tResponse\0223\n\007outputs\030\001 \003(\0132\".google.clou"
-          + "d.aiplatform.v1.Tensor\0226\n\nparameters\030\002 \001"
-          + "(\0132\".google.cloud.aiplatform.v1.Tensor\"\213"
-          + "\001\n\035StreamDirectRawPredictRequest\022<\n\010endp"
+          + "rotobuf/struct.proto\032\037google/protobuf/ti"
+          + "mestamp.proto\"\252\001\n\016PredictRequest\022<\n\010endp"
           + "oint\030\001 \001(\tB*\340A\002\372A$\n\"aiplatform.googleapi"
-          + "s.com/Endpoint\022\030\n\013method_name\030\002 \001(\tB\003\340A\001"
-          + "\022\022\n\005input\030\003 \001(\014B\003\340A\001\"0\n\036StreamDirectRawP"
-          + "redictResponse\022\016\n\006output\030\001 \001(\014\"\303\001\n\027Strea"
-          + "mingPredictRequest\022<\n\010endpoint\030\001 \001(\tB*\340A"
-          + "\002\372A$\n\"aiplatform.googleapis.com/Endpoint"
-          + "\0222\n\006inputs\030\002 \003(\0132\".google.cloud.aiplatfo"
-          + "rm.v1.Tensor\0226\n\nparameters\030\003 \001(\0132\".googl"
-          + "e.cloud.aiplatform.v1.Tensor\"\207\001\n\030Streami"
-          + "ngPredictResponse\0223\n\007outputs\030\001 \003(\0132\".goo"
-          + "gle.cloud.aiplatform.v1.Tensor\0226\n\nparame"
-          + "ters\030\002 \001(\0132\".google.cloud.aiplatform.v1."
-          + "Tensor\"~\n\032StreamingRawPredictRequest\022<\n\010"
-          + "endpoint\030\001 \001(\tB*\340A\002\372A$\n\"aiplatform.googl"
-          + "eapis.com/Endpoint\022\023\n\013method_name\030\002 \001(\t\022"
-          + "\r\n\005input\030\003 \001(\014\"-\n\033StreamingRawPredictRes"
-          + "ponse\022\016\n\006output\030\001 \001(\014\"\235\002\n\016ExplainRequest"
+          + "s.com/Endpoint\022.\n\tinstances\030\002 \003(\0132\026.goog"
+          + "le.protobuf.ValueB\003\340A\002\022*\n\nparameters\030\003 \001"
+          + "(\0132\026.google.protobuf.Value\"\200\002\n\017PredictRe"
+          + "sponse\022+\n\013predictions\030\001 \003(\0132\026.google.pro"
+          + "tobuf.Value\022\031\n\021deployed_model_id\030\002 \001(\t\0226"
+          + "\n\005model\030\003 \001(\tB\'\340A\003\372A!\n\037aiplatform.google"
+          + "apis.com/Model\022\035\n\020model_version_id\030\005 \001(\t"
+          + "B\003\340A\003\022\037\n\022model_display_name\030\004 \001(\tB\003\340A\003\022-"
+          + "\n\010metadata\030\006 \001(\0132\026.google.protobuf.Value"
+          + "B\003\340A\003\"z\n\021RawPredictRequest\022<\n\010endpoint\030\001"
+          + " \001(\tB*\340A\002\372A$\n\"aiplatform.googleapis.com/"
+          + "Endpoint\022\'\n\thttp_body\030\002 \001(\0132\024.google.api"
+          + ".HttpBody\"\200\001\n\027StreamRawPredictRequest\022<\n"
+          + "\010endpoint\030\001 \001(\tB*\340A\002\372A$\n\"aiplatform.goog"
+          + "leapis.com/Endpoint\022\'\n\thttp_body\030\002 \001(\0132\024"
+          + ".google.api.HttpBody\"\300\001\n\024DirectPredictRe"
+          + "quest\022<\n\010endpoint\030\001 \001(\tB*\340A\002\372A$\n\"aiplatf"
+          + "orm.googleapis.com/Endpoint\0222\n\006inputs\030\002 "
+          + "\003(\0132\".google.cloud.aiplatform.v1.Tensor\022"
+          + "6\n\nparameters\030\003 \001(\0132\".google.cloud.aipla"
+          + "tform.v1.Tensor\"\204\001\n\025DirectPredictRespons"
+          + "e\0223\n\007outputs\030\001 \003(\0132\".google.cloud.aiplat"
+          + "form.v1.Tensor\0226\n\nparameters\030\002 \001(\0132\".goo"
+          + "gle.cloud.aiplatform.v1.Tensor\"{\n\027Direct"
+          + "RawPredictRequest\022<\n\010endpoint\030\001 \001(\tB*\340A\002"
+          + "\372A$\n\"aiplatform.googleapis.com/Endpoint\022"
+          + "\023\n\013method_name\030\002 \001(\t\022\r\n\005input\030\003 \001(\014\"*\n\030D"
+          + "irectRawPredictResponse\022\016\n\006output\030\001 \001(\014\""
+          + "\320\001\n\032StreamDirectPredictRequest\022<\n\010endpoi"
+          + "nt\030\001 \001(\tB*\340A\002\372A$\n\"aiplatform.googleapis."
+          + "com/Endpoint\0227\n\006inputs\030\002 \003(\0132\".google.cl"
+          + "oud.aiplatform.v1.TensorB\003\340A\001\022;\n\nparamet"
+          + "ers\030\003 \001(\0132\".google.cloud.aiplatform.v1.T"
+          + "ensorB\003\340A\001\"\212\001\n\033StreamDirectPredictRespon"
+          + "se\0223\n\007outputs\030\001 \003(\0132\".google.cloud.aipla"
+          + "tform.v1.Tensor\0226\n\nparameters\030\002 \001(\0132\".go"
+          + "ogle.cloud.aiplatform.v1.Tensor\"\213\001\n\035Stre"
+          + "amDirectRawPredictRequest\022<\n\010endpoint\030\001 "
+          + "\001(\tB*\340A\002\372A$\n\"aiplatform.googleapis.com/E"
+          + "ndpoint\022\030\n\013method_name\030\002 \001(\tB\003\340A\001\022\022\n\005inp"
+          + "ut\030\003 \001(\014B\003\340A\001\"0\n\036StreamDirectRawPredictR"
+          + "esponse\022\016\n\006output\030\001 \001(\014\"\303\001\n\027StreamingPre"
+          + "dictRequest\022<\n\010endpoint\030\001 \001(\tB*\340A\002\372A$\n\"a"
+          + "iplatform.googleapis.com/Endpoint\0222\n\006inp"
+          + "uts\030\002 \003(\0132\".google.cloud.aiplatform.v1.T"
+          + "ensor\0226\n\nparameters\030\003 \001(\0132\".google.cloud"
+          + ".aiplatform.v1.Tensor\"\207\001\n\030StreamingPredi"
+          + "ctResponse\0223\n\007outputs\030\001 \003(\0132\".google.clo"
+          + "ud.aiplatform.v1.Tensor\0226\n\nparameters\030\002 "
+          + "\001(\0132\".google.cloud.aiplatform.v1.Tensor\""
+          + "~\n\032StreamingRawPredictRequest\022<\n\010endpoin"
+          + "t\030\001 \001(\tB*\340A\002\372A$\n\"aiplatform.googleapis.c"
+          + "om/Endpoint\022\023\n\013method_name\030\002 \001(\t\022\r\n\005inpu"
+          + "t\030\003 \001(\014\"-\n\033StreamingRawPredictResponse\022\016"
+          + "\n\006output\030\001 \001(\014\"\235\002\n\016ExplainRequest\022<\n\010end"
+          + "point\030\001 \001(\tB*\340A\002\372A$\n\"aiplatform.googleap"
+          + "is.com/Endpoint\022.\n\tinstances\030\002 \003(\0132\026.goo"
+          + "gle.protobuf.ValueB\003\340A\002\022*\n\nparameters\030\004 "
+          + "\001(\0132\026.google.protobuf.Value\022V\n\031explanati"
+          + "on_spec_override\030\005 \001(\01323.google.cloud.ai"
+          + "platform.v1.ExplanationSpecOverride\022\031\n\021d"
+          + "eployed_model_id\030\003 \001(\t\"\230\001\n\017ExplainRespon"
+          + "se\022=\n\014explanations\030\001 \003(\0132\'.google.cloud."
+          + "aiplatform.v1.Explanation\022\031\n\021deployed_mo"
+          + "del_id\030\002 \001(\t\022+\n\013predictions\030\003 \003(\0132\026.goog"
+          + "le.protobuf.Value\"\323\003\n\022CountTokensRequest"
           + "\022<\n\010endpoint\030\001 \001(\tB*\340A\002\372A$\n\"aiplatform.g"
-          + "oogleapis.com/Endpoint\022.\n\tinstances\030\002 \003("
-          + "\0132\026.google.protobuf.ValueB\003\340A\002\022*\n\nparame"
-          + "ters\030\004 \001(\0132\026.google.protobuf.Value\022V\n\031ex"
-          + "planation_spec_override\030\005 \001(\01323.google.c"
-          + "loud.aiplatform.v1.ExplanationSpecOverri"
-          + "de\022\031\n\021deployed_model_id\030\003 \001(\t\"\230\001\n\017Explai"
-          + "nResponse\022=\n\014explanations\030\001 \003(\0132\'.google"
-          + ".cloud.aiplatform.v1.Explanation\022\031\n\021depl"
-          + "oyed_model_id\030\002 \001(\t\022+\n\013predictions\030\003 \003(\013"
-          + "2\026.google.protobuf.Value\"\323\003\n\022CountTokens"
-          + "Request\022<\n\010endpoint\030\001 \001(\tB*\340A\002\372A$\n\"aipla"
-          + "tform.googleapis.com/Endpoint\022\022\n\005model\030\003"
-          + " \001(\tB\003\340A\001\022.\n\tinstances\030\002 \003(\0132\026.google.pr"
-          + "otobuf.ValueB\003\340A\001\022:\n\010contents\030\004 \003(\0132#.go"
-          + "ogle.cloud.aiplatform.v1.ContentB\003\340A\001\022I\n"
-          + "\022system_instruction\030\005 \001(\0132#.google.cloud"
-          + ".aiplatform.v1.ContentB\003\340A\001H\000\210\001\001\0224\n\005tool"
-          + "s\030\006 \003(\0132 .google.cloud.aiplatform.v1.Too"
-          + "lB\003\340A\001\022Q\n\021generation_config\030\007 \001(\0132,.goog"
-          + "le.cloud.aiplatform.v1.GenerationConfigB"
-          + "\003\340A\001H\001\210\001\001B\025\n\023_system_instructionB\024\n\022_gen"
-          + "eration_config\"\242\001\n\023CountTokensResponse\022\024"
-          + "\n\014total_tokens\030\001 \001(\005\022!\n\031total_billable_c"
-          + "haracters\030\002 \001(\005\022R\n\025prompt_tokens_details"
-          + "\030\003 \003(\0132..google.cloud.aiplatform.v1.Moda"
-          + "lityTokenCountB\003\340A\003\"\246\005\n\026GenerateContentR"
-          + "equest\022\022\n\005model\030\005 \001(\tB\003\340A\002\022:\n\010contents\030\002"
-          + " \003(\0132#.google.cloud.aiplatform.v1.Conten"
-          + "tB\003\340A\002\022I\n\022system_instruction\030\010 \001(\0132#.goo"
-          + "gle.cloud.aiplatform.v1.ContentB\003\340A\001H\000\210\001"
-          + "\001\022G\n\016cached_content\030\t \001(\tB/\340A\001\372A)\n\'aipla"
-          + "tform.googleapis.com/CachedContent\0224\n\005to"
-          + "ols\030\006 \003(\0132 .google.cloud.aiplatform.v1.T"
-          + "oolB\003\340A\001\022@\n\013tool_config\030\007 \001(\0132&.google.c"
-          + "loud.aiplatform.v1.ToolConfigB\003\340A\001\022S\n\006la"
-          + "bels\030\n \003(\0132>.google.cloud.aiplatform.v1."
-          + "GenerateContentRequest.LabelsEntryB\003\340A\001\022"
-          + "G\n\017safety_settings\030\003 \003(\0132).google.cloud."
-          + "aiplatform.v1.SafetySettingB\003\340A\001\022L\n\021gene"
-          + "ration_config\030\004 \001(\0132,.google.cloud.aipla"
-          + "tform.v1.GenerationConfigB\003\340A\001\032-\n\013Labels"
-          + "Entry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001B\025\n"
-          + "\023_system_instruction\"\234\010\n\027GenerateContent"
-          + "Response\022>\n\ncandidates\030\002 \003(\0132%.google.cl"
-          + "oud.aiplatform.v1.CandidateB\003\340A\003\022\032\n\rmode"
-          + "l_version\030\013 \001(\tB\003\340A\003\022`\n\017prompt_feedback\030"
-          + "\003 \001(\0132B.google.cloud.aiplatform.v1.Gener"
-          + "ateContentResponse.PromptFeedbackB\003\340A\003\022Y"
-          + "\n\016usage_metadata\030\004 \001(\0132A.google.cloud.ai"
-          + "platform.v1.GenerateContentResponse.Usag"
-          + "eMetadata\032\326\002\n\016PromptFeedback\022k\n\014block_re"
-          + "ason\030\001 \001(\0162P.google.cloud.aiplatform.v1."
-          + "GenerateContentResponse.PromptFeedback.B"
-          + "lockedReasonB\003\340A\003\022E\n\016safety_ratings\030\002 \003("
-          + "\0132(.google.cloud.aiplatform.v1.SafetyRat"
-          + "ingB\003\340A\003\022!\n\024block_reason_message\030\003 \001(\tB\003"
-          + "\340A\003\"m\n\rBlockedReason\022\036\n\032BLOCKED_REASON_U"
-          + "NSPECIFIED\020\000\022\n\n\006SAFETY\020\001\022\t\n\005OTHER\020\002\022\r\n\tB"
-          + "LOCKLIST\020\003\022\026\n\022PROHIBITED_CONTENT\020\004\032\216\003\n\rU"
-          + "sageMetadata\022\032\n\022prompt_token_count\030\001 \001(\005"
-          + "\022\036\n\026candidates_token_count\030\002 \001(\005\022\031\n\021tota"
-          + "l_token_count\030\003 \001(\005\022\'\n\032cached_content_to"
-          + "ken_count\030\005 \001(\005B\003\340A\003\022R\n\025prompt_tokens_de"
-          + "tails\030\t \003(\0132..google.cloud.aiplatform.v1"
-          + ".ModalityTokenCountB\003\340A\003\022Q\n\024cache_tokens"
-          + "_details\030\n \003(\0132..google.cloud.aiplatform"
-          + ".v1.ModalityTokenCountB\003\340A\003\022V\n\031candidate"
-          + "s_tokens_details\030\013 \003(\0132..google.cloud.ai"
-          + "platform.v1.ModalityTokenCountB\003\340A\0032\362\031\n\021"
-          + "PredictionService\022\224\002\n\007Predict\022*.google.c"
-          + "loud.aiplatform.v1.PredictRequest\032+.goog"
-          + "le.cloud.aiplatform.v1.PredictResponse\"\257"
-          + "\001\332A\035endpoint,instances,parameters\202\323\344\223\002\210\001"
-          + "\"9/v1/{endpoint=projects/*/locations/*/e"
-          + "ndpoints/*}:predict:\001*ZH\"C/v1/{endpoint="
-          + "projects/*/locations/*/publishers/*/mode"
-          + "ls/*}:predict:\001*\022\376\001\n\nRawPredict\022-.google"
-          + ".cloud.aiplatform.v1.RawPredictRequest\032\024"
-          + ".google.api.HttpBody\"\252\001\332A\022endpoint,http_"
-          + "body\202\323\344\223\002\216\001\"</v1/{endpoint=projects/*/lo"
-          + "cations/*/endpoints/*}:rawPredict:\001*ZK\"F"
-          + "/v1/{endpoint=projects/*/locations/*/pub"
-          + "lishers/*/models/*}:rawPredict:\001*\022\230\002\n\020St"
-          + "reamRawPredict\0223.google.cloud.aiplatform"
-          + ".v1.StreamRawPredictRequest\032\024.google.api"
-          + ".HttpBody\"\266\001\332A\022endpoint,http_body\202\323\344\223\002\232\001"
+          + "oogleapis.com/Endpoint\022\022\n\005model\030\003 \001(\tB\003\340"
+          + "A\001\022.\n\tinstances\030\002 \003(\0132\026.google.protobuf."
+          + "ValueB\003\340A\001\022:\n\010contents\030\004 \003(\0132#.google.cl"
+          + "oud.aiplatform.v1.ContentB\003\340A\001\022I\n\022system"
+          + "_instruction\030\005 \001(\0132#.google.cloud.aiplat"
+          + "form.v1.ContentB\003\340A\001H\000\210\001\001\0224\n\005tools\030\006 \003(\013"
+          + "2 .google.cloud.aiplatform.v1.ToolB\003\340A\001\022"
+          + "Q\n\021generation_config\030\007 \001(\0132,.google.clou"
+          + "d.aiplatform.v1.GenerationConfigB\003\340A\001H\001\210"
+          + "\001\001B\025\n\023_system_instructionB\024\n\022_generation"
+          + "_config\"\242\001\n\023CountTokensResponse\022\024\n\014total"
+          + "_tokens\030\001 \001(\005\022!\n\031total_billable_characte"
+          + "rs\030\002 \001(\005\022R\n\025prompt_tokens_details\030\003 \003(\0132"
+          + "..google.cloud.aiplatform.v1.ModalityTok"
+          + "enCountB\003\340A\003\"\246\005\n\026GenerateContentRequest\022"
+          + "\022\n\005model\030\005 \001(\tB\003\340A\002\022:\n\010contents\030\002 \003(\0132#."
+          + "google.cloud.aiplatform.v1.ContentB\003\340A\002\022"
+          + "I\n\022system_instruction\030\010 \001(\0132#.google.clo"
+          + "ud.aiplatform.v1.ContentB\003\340A\001H\000\210\001\001\022G\n\016ca"
+          + "ched_content\030\t \001(\tB/\340A\001\372A)\n\'aiplatform.g"
+          + "oogleapis.com/CachedContent\0224\n\005tools\030\006 \003"
+          + "(\0132 .google.cloud.aiplatform.v1.ToolB\003\340A"
+          + "\001\022@\n\013tool_config\030\007 \001(\0132&.google.cloud.ai"
+          + "platform.v1.ToolConfigB\003\340A\001\022S\n\006labels\030\n "
+          + "\003(\0132>.google.cloud.aiplatform.v1.Generat"
+          + "eContentRequest.LabelsEntryB\003\340A\001\022G\n\017safe"
+          + "ty_settings\030\003 \003(\0132).google.cloud.aiplatf"
+          + "orm.v1.SafetySettingB\003\340A\001\022L\n\021generation_"
+          + "config\030\004 \001(\0132,.google.cloud.aiplatform.v"
+          + "1.GenerationConfigB\003\340A\001\032-\n\013LabelsEntry\022\013"
+          + "\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001B\025\n\023_syste"
+          + "m_instruction\"\354\010\n\027GenerateContentRespons"
+          + "e\022>\n\ncandidates\030\002 \003(\0132%.google.cloud.aip"
+          + "latform.v1.CandidateB\003\340A\003\022\032\n\rmodel_versi"
+          + "on\030\013 \001(\tB\003\340A\003\0224\n\013create_time\030\014 \001(\0132\032.goo"
+          + "gle.protobuf.TimestampB\003\340A\003\022\030\n\013response_"
+          + "id\030\r \001(\tB\003\340A\003\022`\n\017prompt_feedback\030\003 \001(\0132B"
+          + ".google.cloud.aiplatform.v1.GenerateCont"
+          + "entResponse.PromptFeedbackB\003\340A\003\022Y\n\016usage"
+          + "_metadata\030\004 \001(\0132A.google.cloud.aiplatfor"
+          + "m.v1.GenerateContentResponse.UsageMetada"
+          + "ta\032\326\002\n\016PromptFeedback\022k\n\014block_reason\030\001 "
+          + "\001(\0162P.google.cloud.aiplatform.v1.Generat"
+          + "eContentResponse.PromptFeedback.BlockedR"
+          + "easonB\003\340A\003\022E\n\016safety_ratings\030\002 \003(\0132(.goo"
+          + "gle.cloud.aiplatform.v1.SafetyRatingB\003\340A"
+          + "\003\022!\n\024block_reason_message\030\003 \001(\tB\003\340A\003\"m\n\r"
+          + "BlockedReason\022\036\n\032BLOCKED_REASON_UNSPECIF"
+          + "IED\020\000\022\n\n\006SAFETY\020\001\022\t\n\005OTHER\020\002\022\r\n\tBLOCKLIS"
+          + "T\020\003\022\026\n\022PROHIBITED_CONTENT\020\004\032\216\003\n\rUsageMet"
+          + "adata\022\032\n\022prompt_token_count\030\001 \001(\005\022\036\n\026can"
+          + "didates_token_count\030\002 \001(\005\022\031\n\021total_token"
+          + "_count\030\003 \001(\005\022\'\n\032cached_content_token_cou"
+          + "nt\030\005 \001(\005B\003\340A\003\022R\n\025prompt_tokens_details\030\t"
+          + " \003(\0132..google.cloud.aiplatform.v1.Modali"
+          + "tyTokenCountB\003\340A\003\022Q\n\024cache_tokens_detail"
+          + "s\030\n \003(\0132..google.cloud.aiplatform.v1.Mod"
+          + "alityTokenCountB\003\340A\003\022V\n\031candidates_token"
+          + "s_details\030\013 \003(\0132..google.cloud.aiplatfor"
+          + "m.v1.ModalityTokenCountB\003\340A\0032\362\031\n\021Predict"
+          + "ionService\022\224\002\n\007Predict\022*.google.cloud.ai"
+          + "platform.v1.PredictRequest\032+.google.clou"
+          + "d.aiplatform.v1.PredictResponse\"\257\001\332A\035end"
+          + "point,instances,parameters\202\323\344\223\002\210\001\"9/v1/{"
+          + "endpoint=projects/*/locations/*/endpoint"
+          + "s/*}:predict:\001*ZH\"C/v1/{endpoint=project"
+          + "s/*/locations/*/publishers/*/models/*}:p"
+          + "redict:\001*\022\376\001\n\nRawPredict\022-.google.cloud."
+          + "aiplatform.v1.RawPredictRequest\032\024.google"
+          + ".api.HttpBody\"\252\001\332A\022endpoint,http_body\202\323\344"
+          + "\223\002\216\001\"</v1/{endpoint=projects/*/locations"
+          + "/*/endpoints/*}:rawPredict:\001*ZK\"F/v1/{en"
+          + "dpoint=projects/*/locations/*/publishers"
+          + "/*/models/*}:rawPredict:\001*\022\230\002\n\020StreamRaw"
+          + "Predict\0223.google.cloud.aiplatform.v1.Str"
+          + "eamRawPredictRequest\032\024.google.api.HttpBo"
+          + "dy\"\266\001\332A\022endpoint,http_body\202\323\344\223\002\232\001\"B/v1/{"
+          + "endpoint=projects/*/locations/*/endpoint"
+          + "s/*}:streamRawPredict:\001*ZQ\"L/v1/{endpoin"
+          + "t=projects/*/locations/*/publishers/*/mo"
+          + "dels/*}:streamRawPredict:\001*0\001\022\300\001\n\rDirect"
+          + "Predict\0220.google.cloud.aiplatform.v1.Dir"
+          + "ectPredictRequest\0321.google.cloud.aiplatf"
+          + "orm.v1.DirectPredictResponse\"J\202\323\344\223\002D\"?/v"
+          + "1/{endpoint=projects/*/locations/*/endpo"
+          + "ints/*}:directPredict:\001*\022\314\001\n\020DirectRawPr"
+          + "edict\0223.google.cloud.aiplatform.v1.Direc"
+          + "tRawPredictRequest\0324.google.cloud.aiplat"
+          + "form.v1.DirectRawPredictResponse\"M\202\323\344\223\002G"
           + "\"B/v1/{endpoint=projects/*/locations/*/e"
-          + "ndpoints/*}:streamRawPredict:\001*ZQ\"L/v1/{"
-          + "endpoint=projects/*/locations/*/publishe"
-          + "rs/*/models/*}:streamRawPredict:\001*0\001\022\300\001\n"
-          + "\rDirectPredict\0220.google.cloud.aiplatform"
-          + ".v1.DirectPredictRequest\0321.google.cloud."
-          + "aiplatform.v1.DirectPredictResponse\"J\202\323\344"
-          + "\223\002D\"?/v1/{endpoint=projects/*/locations/"
-          + "*/endpoints/*}:directPredict:\001*\022\314\001\n\020Dire"
-          + "ctRawPredict\0223.google.cloud.aiplatform.v"
-          + "1.DirectRawPredictRequest\0324.google.cloud"
-          + ".aiplatform.v1.DirectRawPredictResponse\""
-          + "M\202\323\344\223\002G\"B/v1/{endpoint=projects/*/locati"
-          + "ons/*/endpoints/*}:directRawPredict:\001*\022\214"
-          + "\001\n\023StreamDirectPredict\0226.google.cloud.ai"
-          + "platform.v1.StreamDirectPredictRequest\0327"
-          + ".google.cloud.aiplatform.v1.StreamDirect"
-          + "PredictResponse\"\000(\0010\001\022\225\001\n\026StreamDirectRa"
-          + "wPredict\0229.google.cloud.aiplatform.v1.St"
-          + "reamDirectRawPredictRequest\032:.google.clo"
-          + "ud.aiplatform.v1.StreamDirectRawPredictR"
-          + "esponse\"\000(\0010\001\022\203\001\n\020StreamingPredict\0223.goo"
-          + "gle.cloud.aiplatform.v1.StreamingPredict"
-          + "Request\0324.google.cloud.aiplatform.v1.Str"
-          + "eamingPredictResponse\"\000(\0010\001\022\265\002\n\026ServerSt"
-          + "reamingPredict\0223.google.cloud.aiplatform"
-          + ".v1.StreamingPredictRequest\0324.google.clo"
-          + "ud.aiplatform.v1.StreamingPredictRespons"
-          + "e\"\255\001\202\323\344\223\002\246\001\"H/v1/{endpoint=projects/*/lo"
-          + "cations/*/endpoints/*}:serverStreamingPr"
-          + "edict:\001*ZW\"R/v1/{endpoint=projects/*/loc"
-          + "ations/*/publishers/*/models/*}:serverSt"
-          + "reamingPredict:\001*0\001\022\214\001\n\023StreamingRawPred"
-          + "ict\0226.google.cloud.aiplatform.v1.Streami"
-          + "ngRawPredictRequest\0327.google.cloud.aipla"
-          + "tform.v1.StreamingRawPredictResponse\"\000(\001"
-          + "0\001\022\332\001\n\007Explain\022*.google.cloud.aiplatform"
-          + ".v1.ExplainRequest\032+.google.cloud.aiplat"
-          + "form.v1.ExplainResponse\"v\332A/endpoint,ins"
-          + "tances,parameters,deployed_model_id\202\323\344\223\002"
-          + ">\"9/v1/{endpoint=projects/*/locations/*/"
-          + "endpoints/*}:explain:\001*\022\215\003\n\017GenerateCont"
-          + "ent\0222.google.cloud.aiplatform.v1.Generat"
-          + "eContentRequest\0323.google.cloud.aiplatfor"
-          + "m.v1.GenerateContentResponse\"\220\002\332A\016model,"
-          + "contents\202\323\344\223\002\370\001\">/v1/{model=projects/*/l"
-          + "ocations/*/endpoints/*}:generateContent:"
-          + "\001*ZM\"H/v1/{model=projects/*/locations/*/"
-          + "publishers/*/models/*}:generateContent:\001"
-          + "*Z,\"\'/v1/{model=endpoints/*}:generateCon"
-          + "tent:\001*Z6\"1/v1/{model=publishers/*/model"
-          + "s/*}:generateContent:\001*\022\255\003\n\025StreamGenera"
-          + "teContent\0222.google.cloud.aiplatform.v1.G"
-          + "enerateContentRequest\0323.google.cloud.aip"
-          + "latform.v1.GenerateContentResponse\"\250\002\332A\016"
-          + "model,contents\202\323\344\223\002\220\002\"D/v1/{model=projec"
-          + "ts/*/locations/*/endpoints/*}:streamGene"
-          + "rateContent:\001*ZS\"N/v1/{model=projects/*/"
-          + "locations/*/publishers/*/models/*}:strea"
-          + "mGenerateContent:\001*Z2\"-/v1/{model=endpoi"
-          + "nts/*}:streamGenerateContent:\001*Z<\"7/v1/{"
-          + "model=publishers/*/models/*}:streamGener"
-          + "ateContent:\001*0\001\032\206\001\312A\031aiplatform.googleap"
-          + "is.com\322Aghttps://www.googleapis.com/auth"
-          + "/cloud-platform,https://www.googleapis.c"
-          + "om/auth/cloud-platform.read-onlyB\324\001\n\036com"
-          + ".google.cloud.aiplatform.v1B\026PredictionS"
-          + "erviceProtoP\001Z>cloud.google.com/go/aipla"
-          + "tform/apiv1/aiplatformpb;aiplatformpb\252\002\032"
-          + "Google.Cloud.AIPlatform.V1\312\002\032Google\\Clou"
-          + "d\\AIPlatform\\V1\352\002\035Google::Cloud::AIPlatf"
-          + "orm::V1b\006proto3"
+          + "ndpoints/*}:directRawPredict:\001*\022\214\001\n\023Stre"
+          + "amDirectPredict\0226.google.cloud.aiplatfor"
+          + "m.v1.StreamDirectPredictRequest\0327.google"
+          + ".cloud.aiplatform.v1.StreamDirectPredict"
+          + "Response\"\000(\0010\001\022\225\001\n\026StreamDirectRawPredic"
+          + "t\0229.google.cloud.aiplatform.v1.StreamDir"
+          + "ectRawPredictRequest\032:.google.cloud.aipl"
+          + "atform.v1.StreamDirectRawPredictResponse"
+          + "\"\000(\0010\001\022\203\001\n\020StreamingPredict\0223.google.clo"
+          + "ud.aiplatform.v1.StreamingPredictRequest"
+          + "\0324.google.cloud.aiplatform.v1.StreamingP"
+          + "redictResponse\"\000(\0010\001\022\265\002\n\026ServerStreaming"
+          + "Predict\0223.google.cloud.aiplatform.v1.Str"
+          + "eamingPredictRequest\0324.google.cloud.aipl"
+          + "atform.v1.StreamingPredictResponse\"\255\001\202\323\344"
+          + "\223\002\246\001\"H/v1/{endpoint=projects/*/locations"
+          + "/*/endpoints/*}:serverStreamingPredict:\001"
+          + "*ZW\"R/v1/{endpoint=projects/*/locations/"
+          + "*/publishers/*/models/*}:serverStreaming"
+          + "Predict:\001*0\001\022\214\001\n\023StreamingRawPredict\0226.g"
+          + "oogle.cloud.aiplatform.v1.StreamingRawPr"
+          + "edictRequest\0327.google.cloud.aiplatform.v"
+          + "1.StreamingRawPredictResponse\"\000(\0010\001\022\332\001\n\007"
+          + "Explain\022*.google.cloud.aiplatform.v1.Exp"
+          + "lainRequest\032+.google.cloud.aiplatform.v1"
+          + ".ExplainResponse\"v\332A/endpoint,instances,"
+          + "parameters,deployed_model_id\202\323\344\223\002>\"9/v1/"
+          + "{endpoint=projects/*/locations/*/endpoin"
+          + "ts/*}:explain:\001*\022\215\003\n\017GenerateContent\0222.g"
+          + "oogle.cloud.aiplatform.v1.GenerateConten"
+          + "tRequest\0323.google.cloud.aiplatform.v1.Ge"
+          + "nerateContentResponse\"\220\002\332A\016model,content"
+          + "s\202\323\344\223\002\370\001\">/v1/{model=projects/*/location"
+          + "s/*/endpoints/*}:generateContent:\001*ZM\"H/"
+          + "v1/{model=projects/*/locations/*/publish"
+          + "ers/*/models/*}:generateContent:\001*Z,\"\'/v"
+          + "1/{model=endpoints/*}:generateContent:\001*"
+          + "Z6\"1/v1/{model=publishers/*/models/*}:ge"
+          + "nerateContent:\001*\022\255\003\n\025StreamGenerateConte"
+          + "nt\0222.google.cloud.aiplatform.v1.Generate"
+          + "ContentRequest\0323.google.cloud.aiplatform"
+          + ".v1.GenerateContentResponse\"\250\002\332A\016model,c"
+          + "ontents\202\323\344\223\002\220\002\"D/v1/{model=projects/*/lo"
+          + "cations/*/endpoints/*}:streamGenerateCon"
+          + "tent:\001*ZS\"N/v1/{model=projects/*/locatio"
+          + "ns/*/publishers/*/models/*}:streamGenera"
+          + "teContent:\001*Z2\"-/v1/{model=endpoints/*}:"
+          + "streamGenerateContent:\001*Z<\"7/v1/{model=p"
+          + "ublishers/*/models/*}:streamGenerateCont"
+          + "ent:\001*0\001\032\206\001\312A\031aiplatform.googleapis.com\322"
+          + "Aghttps://www.googleapis.com/auth/cloud-"
+          + "platform,https://www.googleapis.com/auth"
+          + "/cloud-platform.read-onlyB\324\001\n\036com.google"
+          + ".cloud.aiplatform.v1B\026PredictionServiceP"
+          + "rotoP\001Z>cloud.google.com/go/aiplatform/a"
+          + "piv1/aiplatformpb;aiplatformpb\252\002\032Google."
+          + "Cloud.AIPlatform.V1\312\002\032Google\\Cloud\\AIPla"
+          + "tform\\V1\352\002\035Google::Cloud::AIPlatform::V1"
+          + "b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -378,6 +381,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               com.google.cloud.aiplatform.v1.ToolProto.getDescriptor(),
               com.google.cloud.aiplatform.v1.TypesProto.getDescriptor(),
               com.google.protobuf.StructProto.getDescriptor(),
+              com.google.protobuf.TimestampProto.getDescriptor(),
             });
     internal_static_google_cloud_aiplatform_v1_PredictRequest_descriptor =
         getDescriptor().getMessageTypes().get(0);
@@ -582,7 +586,12 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_aiplatform_v1_GenerateContentResponse_descriptor,
             new java.lang.String[] {
-              "Candidates", "ModelVersion", "PromptFeedback", "UsageMetadata",
+              "Candidates",
+              "ModelVersion",
+              "CreateTime",
+              "ResponseId",
+              "PromptFeedback",
+              "UsageMetadata",
             });
     internal_static_google_cloud_aiplatform_v1_GenerateContentResponse_PromptFeedback_descriptor =
         internal_static_google_cloud_aiplatform_v1_GenerateContentResponse_descriptor
@@ -630,6 +639,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     com.google.cloud.aiplatform.v1.ToolProto.getDescriptor();
     com.google.cloud.aiplatform.v1.TypesProto.getDescriptor();
     com.google.protobuf.StructProto.getDescriptor();
+    com.google.protobuf.TimestampProto.getDescriptor();
   }
 
   // @@protoc_insertion_point(outer_class_scope)
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/proto/google/cloud/aiplatform/v1/prediction_service.proto b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/proto/google/cloud/aiplatform/v1/prediction_service.proto
index 4282a30834bb..bf46a02cea64 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/proto/google/cloud/aiplatform/v1/prediction_service.proto
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/proto/google/cloud/aiplatform/v1/prediction_service.proto
@@ -26,6 +26,7 @@ import "google/cloud/aiplatform/v1/explanation.proto";
 import "google/cloud/aiplatform/v1/tool.proto";
 import "google/cloud/aiplatform/v1/types.proto";
 import "google/protobuf/struct.proto";
+import "google/protobuf/timestamp.proto";
 
 option csharp_namespace = "Google.Cloud.AIPlatform.V1";
 option go_package = "cloud.google.com/go/aiplatform/apiv1/aiplatformpb;aiplatformpb";
@@ -814,6 +815,14 @@ message GenerateContentResponse {
   // Output only. The model version used to generate the response.
   string model_version = 11 [(google.api.field_behavior) = OUTPUT_ONLY];
 
+  // Output only. Timestamp when the request is made to the server.
+  google.protobuf.Timestamp create_time = 12
+      [(google.api.field_behavior) = OUTPUT_ONLY];
+
+  // Output only. response_id is used to identify each response. It is the
+  // encoding of the event_id.
+  string response_id = 13 [(google.api.field_behavior) = OUTPUT_ONLY];
+
   // Output only. Content filter results for a prompt sent in the request.
   // Note: Sent only in the first stream chunk.
   // Only happens when no candidates were generated due to content violations.
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SlashCommand.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SlashCommand.java
index d41cb2b3c91c..0eb509939e95 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SlashCommand.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SlashCommand.java
@@ -24,7 +24,7 @@
  *
  * <pre>
  * A [slash
- * command](https://developers.google.com/workspace/chat/slash-commands) in
+ * command](https://developers.google.com/workspace/chat/commands) in
  * Google Chat.
  * </pre>
  *
@@ -242,7 +242,7 @@ protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.Build
    *
    * <pre>
    * A [slash
-   * command](https://developers.google.com/workspace/chat/slash-commands) in
+   * command](https://developers.google.com/workspace/chat/commands) in
    * Google Chat.
    * </pre>
    *
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/proto/google/chat/v1/slash_command.proto b/java-chat/proto-google-cloud-chat-v1/src/main/proto/google/chat/v1/slash_command.proto
index 75f213549555..095a582951d5 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/proto/google/chat/v1/slash_command.proto
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/proto/google/chat/v1/slash_command.proto
@@ -26,7 +26,7 @@ option php_namespace = "Google\\Apps\\Chat\\V1";
 option ruby_package = "Google::Apps::Chat::V1";
 
 // A [slash
-// command](https://developers.google.com/workspace/chat/slash-commands) in
+// command](https://developers.google.com/workspace/chat/commands) in
 // Google Chat.
 message SlashCommand {
   // The ID of the slash command invoked.