diff --git a/AiPlatform/metadata/V1/PredictionService.php b/AiPlatform/metadata/V1/PredictionService.php
index 81c925e42c34..8d5d8615b658 100644
Binary files a/AiPlatform/metadata/V1/PredictionService.php and b/AiPlatform/metadata/V1/PredictionService.php differ
diff --git a/AiPlatform/src/V1/GenerateContentResponse/UsageMetadata.php b/AiPlatform/src/V1/GenerateContentResponse/UsageMetadata.php
index 9f76d139b551..c58ba7c4db93 100644
--- a/AiPlatform/src/V1/GenerateContentResponse/UsageMetadata.php
+++ b/AiPlatform/src/V1/GenerateContentResponse/UsageMetadata.php
@@ -67,6 +67,20 @@ class UsageMetadata extends \Google\Protobuf\Internal\Message
      * Generated from protobuf field <code>repeated .google.cloud.aiplatform.v1.ModalityTokenCount candidates_tokens_details = 11 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
      */
     private $candidates_tokens_details;
+    /**
+     * Output only. A detailed breakdown by modality of the token counts from
+     * the results of tool executions, which are provided back to the model as
+     * input.
+     *
+     * Generated from protobuf field <code>repeated .google.cloud.aiplatform.v1.ModalityTokenCount tool_use_prompt_tokens_details = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     */
+    private $tool_use_prompt_tokens_details;
+    /**
+     * Output only. The traffic type for this request.
+     *
+     * Generated from protobuf field <code>.google.cloud.aiplatform.v1.GenerateContentResponse.UsageMetadata.TrafficType traffic_type = 8 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     */
+    protected $traffic_type = 0;
 
     /**
      * Constructor.
@@ -94,6 +108,12 @@ class UsageMetadata extends \Google\Protobuf\Internal\Message
      *           input.
      *     @type array<\Google\Cloud\AIPlatform\V1\ModalityTokenCount>|\Google\Protobuf\Internal\RepeatedField $candidates_tokens_details
      *           Output only. List of modalities that were returned in the response.
+     *     @type array<\Google\Cloud\AIPlatform\V1\ModalityTokenCount>|\Google\Protobuf\Internal\RepeatedField $tool_use_prompt_tokens_details
+     *           Output only. A detailed breakdown by modality of the token counts from
+     *           the results of tool executions, which are provided back to the model as
+     *           input.
+     *     @type int $traffic_type
+     *           Output only. The traffic type for this request.
      * }
      */
     public function __construct($data = NULL) {
@@ -317,6 +337,62 @@ public function setCandidatesTokensDetails($var)
         return $this;
     }
 
+    /**
+     * Output only. A detailed breakdown by modality of the token counts from
+     * the results of tool executions, which are provided back to the model as
+     * input.
+     *
+     * Generated from protobuf field <code>repeated .google.cloud.aiplatform.v1.ModalityTokenCount tool_use_prompt_tokens_details = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getToolUsePromptTokensDetails()
+    {
+        return $this->tool_use_prompt_tokens_details;
+    }
+
+    /**
+     * Output only. A detailed breakdown by modality of the token counts from
+     * the results of tool executions, which are provided back to the model as
+     * input.
+     *
+     * Generated from protobuf field <code>repeated .google.cloud.aiplatform.v1.ModalityTokenCount tool_use_prompt_tokens_details = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * @param array<\Google\Cloud\AIPlatform\V1\ModalityTokenCount>|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setToolUsePromptTokensDetails($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Cloud\AIPlatform\V1\ModalityTokenCount::class);
+        $this->tool_use_prompt_tokens_details = $arr;
+
+        return $this;
+    }
+
+    /**
+     * Output only. The traffic type for this request.
+     *
+     * Generated from protobuf field <code>.google.cloud.aiplatform.v1.GenerateContentResponse.UsageMetadata.TrafficType traffic_type = 8 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * @return int
+     */
+    public function getTrafficType()
+    {
+        return $this->traffic_type;
+    }
+
+    /**
+     * Output only. The traffic type for this request.
+     *
+     * Generated from protobuf field <code>.google.cloud.aiplatform.v1.GenerateContentResponse.UsageMetadata.TrafficType traffic_type = 8 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * @param int $var
+     * @return $this
+     */
+    public function setTrafficType($var)
+    {
+        GPBUtil::checkEnum($var, \Google\Cloud\AIPlatform\V1\GenerateContentResponse\UsageMetadata\TrafficType::class);
+        $this->traffic_type = $var;
+
+        return $this;
+    }
+
 }
 
 
diff --git a/AiPlatform/src/V1/GenerateContentResponse/UsageMetadata/TrafficType.php b/AiPlatform/src/V1/GenerateContentResponse/UsageMetadata/TrafficType.php
new file mode 100644
index 000000000000..e4e90b0f281e
--- /dev/null
+++ b/AiPlatform/src/V1/GenerateContentResponse/UsageMetadata/TrafficType.php
@@ -0,0 +1,77 @@
+<?php
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: google/cloud/aiplatform/v1/prediction_service.proto
+
+namespace Google\Cloud\AIPlatform\V1\GenerateContentResponse\UsageMetadata;
+
+use UnexpectedValueException;
+
+/**
+ * The type of traffic that this request was processed with, indicating
+ * which quota is consumed.
+ *
+ * Protobuf type <code>google.cloud.aiplatform.v1.GenerateContentResponse.UsageMetadata.TrafficType</code>
+ */
+class TrafficType
+{
+    /**
+     * Unspecified request traffic type.
+     *
+     * Generated from protobuf enum <code>TRAFFIC_TYPE_UNSPECIFIED = 0;</code>
+     */
+    const TRAFFIC_TYPE_UNSPECIFIED = 0;
+    /**
+     * The request was processed using Pay-As-You-Go quota.
+     *
+     * Generated from protobuf enum <code>ON_DEMAND = 1;</code>
+     */
+    const ON_DEMAND = 1;
+    /**
+     * Type for Priority Pay-As-You-Go traffic.
+     *
+     * Generated from protobuf enum <code>ON_DEMAND_PRIORITY = 3;</code>
+     */
+    const ON_DEMAND_PRIORITY = 3;
+    /**
+     * Type for Flex traffic.
+     *
+     * Generated from protobuf enum <code>ON_DEMAND_FLEX = 4;</code>
+     */
+    const ON_DEMAND_FLEX = 4;
+    /**
+     * Type for Provisioned Throughput traffic.
+     *
+     * Generated from protobuf enum <code>PROVISIONED_THROUGHPUT = 2;</code>
+     */
+    const PROVISIONED_THROUGHPUT = 2;
+
+    private static $valueToName = [
+        self::TRAFFIC_TYPE_UNSPECIFIED => 'TRAFFIC_TYPE_UNSPECIFIED',
+        self::ON_DEMAND => 'ON_DEMAND',
+        self::ON_DEMAND_PRIORITY => 'ON_DEMAND_PRIORITY',
+        self::ON_DEMAND_FLEX => 'ON_DEMAND_FLEX',
+        self::PROVISIONED_THROUGHPUT => 'PROVISIONED_THROUGHPUT',
+    ];
+
+    public static function name($value)
+    {
+        if (!isset(self::$valueToName[$value])) {
+            throw new UnexpectedValueException(sprintf(
+                    'Enum %s has no name defined for value %s', __CLASS__, $value));
+        }
+        return self::$valueToName[$value];
+    }
+
+
+    public static function value($name)
+    {
+        $const = __CLASS__ . '::' . strtoupper($name);
+        if (!defined($const)) {
+            throw new UnexpectedValueException(sprintf(
+                    'Enum %s has no value defined for name %s', __CLASS__, $name));
+        }
+        return constant($const);
+    }
+}
+
+