diff --git a/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageAnthropicMessagesClient.CreateMessages.g.cs b/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageAnthropicMessagesClient.CreateMessages.g.cs
index 809db191..888d7a52 100644
--- a/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageAnthropicMessagesClient.CreateMessages.g.cs
+++ b/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageAnthropicMessagesClient.CreateMessages.g.cs
@@ -8,7 +8,7 @@ public partial interface ISubpackageAnthropicMessagesClient
         /// Create a message<br/>
         /// Creates a message using the Anthropic Messages API format. Supports text, images, PDFs, tools, and extended thinking.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -18,14 +18,14 @@ public partial interface ISubpackageAnthropicMessagesClient
         global::System.Threading.Tasks.Task<global::OpenRouter.MessagesResult> CreateMessagesAsync(
 
             global::OpenRouter.MessagesRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default);
         /// <summary>
         /// Create a message<br/>
         /// Creates a message using the Anthropic Messages API format. Supports text, images, PDFs, tools, and extended thinking.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -35,14 +35,14 @@ public partial interface ISubpackageAnthropicMessagesClient
         global::System.Threading.Tasks.Task<global::OpenRouter.AutoSDKHttpResponse<global::OpenRouter.MessagesResult>> CreateMessagesAsResponseAsync(
 
             global::OpenRouter.MessagesRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default);
         /// <summary>
         /// Create a message<br/>
         /// Creates a message using the Anthropic Messages API format. Supports text, images, PDFs, tools, and extended thinking.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="cacheControl">
@@ -94,7 +94,7 @@ public partial interface ISubpackageAnthropicMessagesClient
         /// <exception cref="global::System.InvalidOperationException"></exception>
         global::System.Threading.Tasks.Task<global::OpenRouter.MessagesResult> CreateMessagesAsync(
             string model,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AnthropicCacheControlDirective? cacheControl = default,
             global::OpenRouter.OneOf<global::OpenRouter.MessagesRequestContextManagement, object>? contextManagement = default,
             int? maxTokens = default,
diff --git a/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageBetaResponsesClient.CreateResponses.g.cs b/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageBetaResponsesClient.CreateResponses.g.cs
index 73708567..3085e974 100644
--- a/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageBetaResponsesClient.CreateResponses.g.cs
+++ b/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageBetaResponsesClient.CreateResponses.g.cs
@@ -8,7 +8,7 @@ public partial interface ISubpackageBetaResponsesClient
         /// Create a response<br/>
         /// Creates a streaming or non-streaming response using OpenResponses API format
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -18,14 +18,14 @@ public partial interface ISubpackageBetaResponsesClient
         global::System.Threading.Tasks.Task<global::OpenRouter.OpenResponsesResult> CreateResponsesAsync(
 
             global::OpenRouter.ResponsesRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default);
         /// <summary>
         /// Create a response<br/>
         /// Creates a streaming or non-streaming response using OpenResponses API format
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -35,14 +35,14 @@ public partial interface ISubpackageBetaResponsesClient
         global::System.Threading.Tasks.Task<global::OpenRouter.AutoSDKHttpResponse<global::OpenRouter.OpenResponsesResult>> CreateResponsesAsResponseAsync(
 
             global::OpenRouter.ResponsesRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default);
         /// <summary>
         /// Create a response<br/>
         /// Creates a streaming or non-streaming response using OpenResponses API format
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="background"></param>
@@ -115,7 +115,7 @@ public partial interface ISubpackageBetaResponsesClient
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         global::System.Threading.Tasks.Task<global::OpenRouter.OpenResponsesResult> CreateResponsesAsync(
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             bool? background = default,
             global::OpenRouter.AnthropicCacheControlDirective? cacheControl = default,
             double? frequencyPenalty = default,
diff --git a/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageChatClient.SendChatCompletionRequest.g.cs b/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageChatClient.SendChatCompletionRequest.g.cs
index 37aaf8c6..0a70f88a 100644
--- a/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageChatClient.SendChatCompletionRequest.g.cs
+++ b/src/libs/OpenRouter/Generated/OpenRouter.ISubpackageChatClient.SendChatCompletionRequest.g.cs
@@ -8,7 +8,7 @@ public partial interface ISubpackageChatClient
         /// Create a chat completion<br/>
         /// Sends a request for a model response for the given chat conversation. Supports both streaming and non-streaming modes.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -18,14 +18,14 @@ public partial interface ISubpackageChatClient
         global::System.Threading.Tasks.Task<global::OpenRouter.ChatResult> SendChatCompletionRequestAsync(
 
             global::OpenRouter.ChatRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default);
         /// <summary>
         /// Create a chat completion<br/>
         /// Sends a request for a model response for the given chat conversation. Supports both streaming and non-streaming modes.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -35,14 +35,14 @@ public partial interface ISubpackageChatClient
         global::System.Threading.Tasks.Task<global::OpenRouter.AutoSDKHttpResponse<global::OpenRouter.ChatResult>> SendChatCompletionRequestAsResponseAsync(
 
             global::OpenRouter.ChatRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default);
         /// <summary>
         /// Create a chat completion<br/>
         /// Sends a request for a model response for the given chat conversation. Supports both streaming and non-streaming modes.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="cacheControl">
@@ -151,7 +151,7 @@ public partial interface ISubpackageChatClient
         /// <exception cref="global::System.InvalidOperationException"></exception>
         global::System.Threading.Tasks.Task<global::OpenRouter.ChatResult> SendChatCompletionRequestAsync(
             global::System.Collections.Generic.IList<global::OpenRouter.ChatMessages> messages,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AnthropicCacheControlDirective? cacheControl = default,
             global::OpenRouter.ChatDebugOptions? debug = default,
             double? frequencyPenalty = default,
diff --git a/src/libs/OpenRouter/Generated/OpenRouter.SubpackageAnthropicMessagesClient.CreateMessages.g.cs b/src/libs/OpenRouter/Generated/OpenRouter.SubpackageAnthropicMessagesClient.CreateMessages.g.cs
index d9d9a01c..5a354ce9 100644
--- a/src/libs/OpenRouter/Generated/OpenRouter.SubpackageAnthropicMessagesClient.CreateMessages.g.cs
+++ b/src/libs/OpenRouter/Generated/OpenRouter.SubpackageAnthropicMessagesClient.CreateMessages.g.cs
@@ -27,12 +27,12 @@ public partial class SubpackageAnthropicMessagesClient
             };
         partial void PrepareCreateMessagesArguments(
             global::System.Net.Http.HttpClient httpClient,
-            ref global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata,
+            ref global::OpenRouter.MetadataLevel? xOpenRouterMetadata,
             global::OpenRouter.MessagesRequest request);
         partial void PrepareCreateMessagesRequest(
             global::System.Net.Http.HttpClient httpClient,
             global::System.Net.Http.HttpRequestMessage httpRequestMessage,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata,
             global::OpenRouter.MessagesRequest request);
         partial void ProcessCreateMessagesResponse(
             global::System.Net.Http.HttpClient httpClient,
@@ -47,7 +47,7 @@ partial void ProcessCreateMessagesResponseContent(
         /// Create a message<br/>
         /// Creates a message using the Anthropic Messages API format. Supports text, images, PDFs, tools, and extended thinking.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -57,14 +57,14 @@ partial void ProcessCreateMessagesResponseContent(
         public async global::System.Threading.Tasks.Task<global::OpenRouter.MessagesResult> CreateMessagesAsync(
 
             global::OpenRouter.MessagesRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             var __response = await CreateMessagesAsResponseAsync(
 
                 request: request,
-                xOpenRouterExperimentalMetadata: xOpenRouterExperimentalMetadata,
+                xOpenRouterMetadata: xOpenRouterMetadata,
                 requestOptions: requestOptions,
                 cancellationToken: cancellationToken
             ).ConfigureAwait(false);
@@ -75,7 +75,7 @@ partial void ProcessCreateMessagesResponseContent(
         /// Create a message<br/>
         /// Creates a message using the Anthropic Messages API format. Supports text, images, PDFs, tools, and extended thinking.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -85,7 +85,7 @@ partial void ProcessCreateMessagesResponseContent(
         public async global::System.Threading.Tasks.Task<global::OpenRouter.AutoSDKHttpResponse<global::OpenRouter.MessagesResult>> CreateMessagesAsResponseAsync(
 
             global::OpenRouter.MessagesRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default)
         {
@@ -95,7 +95,7 @@ partial void ProcessCreateMessagesResponseContent(
                 client: HttpClient);
             PrepareCreateMessagesArguments(
                 httpClient: HttpClient,
-                xOpenRouterExperimentalMetadata: ref xOpenRouterExperimentalMetadata,
+                xOpenRouterMetadata: ref xOpenRouterMetadata,
                 request: request);
 
 
@@ -154,9 +154,9 @@ partial void ProcessCreateMessagesResponseContent(
                 } 
             }
 
-            if (xOpenRouterExperimentalMetadata != default)
+            if (xOpenRouterMetadata != default)
             {
-                __httpRequest.Headers.TryAddWithoutValidation("X-OpenRouter-Experimental-Metadata", xOpenRouterExperimentalMetadata?.ToValueString() ?? string.Empty);
+                __httpRequest.Headers.TryAddWithoutValidation("X-OpenRouter-Metadata", xOpenRouterMetadata?.ToValueString() ?? string.Empty);
             }
 
                             var __httpRequestContentBody = request.ToJson(JsonSerializerContext);
@@ -176,7 +176,7 @@ partial void ProcessCreateMessagesResponseContent(
                 PrepareCreateMessagesRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    xOpenRouterExperimentalMetadata: xOpenRouterExperimentalMetadata,
+                    xOpenRouterMetadata: xOpenRouterMetadata,
                     request: request);
 
                 return __httpRequest;
@@ -430,7 +430,7 @@ partial void ProcessCreateMessagesResponseContent(
                                         h => h.Key,
                                         h => h.Value));
                             }
-                            // Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Experimental-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.
+                            // Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.
                             if ((int)__response.StatusCode == 403)
                             {
                                 string? __content_403 = null;
@@ -715,7 +715,7 @@ partial void ProcessCreateMessagesResponseContent(
         /// Create a message<br/>
         /// Creates a message using the Anthropic Messages API format. Supports text, images, PDFs, tools, and extended thinking.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="cacheControl">
@@ -767,7 +767,7 @@ partial void ProcessCreateMessagesResponseContent(
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::OpenRouter.MessagesResult> CreateMessagesAsync(
             string model,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AnthropicCacheControlDirective? cacheControl = default,
             global::OpenRouter.OneOf<global::OpenRouter.MessagesRequestContextManagement, object>? contextManagement = default,
             int? maxTokens = default,
@@ -827,7 +827,7 @@ partial void ProcessCreateMessagesResponseContent(
             };
 
             return await CreateMessagesAsync(
-                xOpenRouterExperimentalMetadata: xOpenRouterExperimentalMetadata,
+                xOpenRouterMetadata: xOpenRouterMetadata,
                 request: __request,
                 requestOptions: requestOptions,
                 cancellationToken: cancellationToken).ConfigureAwait(false);
diff --git a/src/libs/OpenRouter/Generated/OpenRouter.SubpackageBetaResponsesClient.CreateResponses.g.cs b/src/libs/OpenRouter/Generated/OpenRouter.SubpackageBetaResponsesClient.CreateResponses.g.cs
index 9801eff0..3cfe54dc 100644
--- a/src/libs/OpenRouter/Generated/OpenRouter.SubpackageBetaResponsesClient.CreateResponses.g.cs
+++ b/src/libs/OpenRouter/Generated/OpenRouter.SubpackageBetaResponsesClient.CreateResponses.g.cs
@@ -27,12 +27,12 @@ public partial class SubpackageBetaResponsesClient
             };
         partial void PrepareCreateResponsesArguments(
             global::System.Net.Http.HttpClient httpClient,
-            ref global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata,
+            ref global::OpenRouter.MetadataLevel? xOpenRouterMetadata,
             global::OpenRouter.ResponsesRequest request);
         partial void PrepareCreateResponsesRequest(
             global::System.Net.Http.HttpClient httpClient,
             global::System.Net.Http.HttpRequestMessage httpRequestMessage,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata,
             global::OpenRouter.ResponsesRequest request);
         partial void ProcessCreateResponsesResponse(
             global::System.Net.Http.HttpClient httpClient,
@@ -47,7 +47,7 @@ partial void ProcessCreateResponsesResponseContent(
         /// Create a response<br/>
         /// Creates a streaming or non-streaming response using OpenResponses API format
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -57,14 +57,14 @@ partial void ProcessCreateResponsesResponseContent(
         public async global::System.Threading.Tasks.Task<global::OpenRouter.OpenResponsesResult> CreateResponsesAsync(
 
             global::OpenRouter.ResponsesRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             var __response = await CreateResponsesAsResponseAsync(
 
                 request: request,
-                xOpenRouterExperimentalMetadata: xOpenRouterExperimentalMetadata,
+                xOpenRouterMetadata: xOpenRouterMetadata,
                 requestOptions: requestOptions,
                 cancellationToken: cancellationToken
             ).ConfigureAwait(false);
@@ -75,7 +75,7 @@ partial void ProcessCreateResponsesResponseContent(
         /// Create a response<br/>
         /// Creates a streaming or non-streaming response using OpenResponses API format
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -85,7 +85,7 @@ partial void ProcessCreateResponsesResponseContent(
         public async global::System.Threading.Tasks.Task<global::OpenRouter.AutoSDKHttpResponse<global::OpenRouter.OpenResponsesResult>> CreateResponsesAsResponseAsync(
 
             global::OpenRouter.ResponsesRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default)
         {
@@ -95,7 +95,7 @@ partial void ProcessCreateResponsesResponseContent(
                 client: HttpClient);
             PrepareCreateResponsesArguments(
                 httpClient: HttpClient,
-                xOpenRouterExperimentalMetadata: ref xOpenRouterExperimentalMetadata,
+                xOpenRouterMetadata: ref xOpenRouterMetadata,
                 request: request);
 
 
@@ -154,9 +154,9 @@ partial void ProcessCreateResponsesResponseContent(
                 } 
             }
 
-            if (xOpenRouterExperimentalMetadata != default)
+            if (xOpenRouterMetadata != default)
             {
-                __httpRequest.Headers.TryAddWithoutValidation("X-OpenRouter-Experimental-Metadata", xOpenRouterExperimentalMetadata?.ToValueString() ?? string.Empty);
+                __httpRequest.Headers.TryAddWithoutValidation("X-OpenRouter-Metadata", xOpenRouterMetadata?.ToValueString() ?? string.Empty);
             }
 
                             var __httpRequestContentBody = request.ToJson(JsonSerializerContext);
@@ -176,7 +176,7 @@ partial void ProcessCreateResponsesResponseContent(
                 PrepareCreateResponsesRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    xOpenRouterExperimentalMetadata: xOpenRouterExperimentalMetadata,
+                    xOpenRouterMetadata: xOpenRouterMetadata,
                     request: request);
 
                 return __httpRequest;
@@ -467,7 +467,7 @@ partial void ProcessCreateResponsesResponseContent(
                                         h => h.Key,
                                         h => h.Value));
                             }
-                            // Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Experimental-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.
+                            // Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.
                             if ((int)__response.StatusCode == 403)
                             {
                                 string? __content_403 = null;
@@ -900,7 +900,7 @@ partial void ProcessCreateResponsesResponseContent(
         /// Create a response<br/>
         /// Creates a streaming or non-streaming response using OpenResponses API format
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="background"></param>
@@ -973,7 +973,7 @@ partial void ProcessCreateResponsesResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::OpenRouter.OpenResponsesResult> CreateResponsesAsync(
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             bool? background = default,
             global::OpenRouter.AnthropicCacheControlDirective? cacheControl = default,
             double? frequencyPenalty = default,
@@ -1058,7 +1058,7 @@ partial void ProcessCreateResponsesResponseContent(
             };
 
             return await CreateResponsesAsync(
-                xOpenRouterExperimentalMetadata: xOpenRouterExperimentalMetadata,
+                xOpenRouterMetadata: xOpenRouterMetadata,
                 request: __request,
                 requestOptions: requestOptions,
                 cancellationToken: cancellationToken).ConfigureAwait(false);
diff --git a/src/libs/OpenRouter/Generated/OpenRouter.SubpackageChatClient.SendChatCompletionRequest.g.cs b/src/libs/OpenRouter/Generated/OpenRouter.SubpackageChatClient.SendChatCompletionRequest.g.cs
index c1e2c4b7..7ae83335 100644
--- a/src/libs/OpenRouter/Generated/OpenRouter.SubpackageChatClient.SendChatCompletionRequest.g.cs
+++ b/src/libs/OpenRouter/Generated/OpenRouter.SubpackageChatClient.SendChatCompletionRequest.g.cs
@@ -27,12 +27,12 @@ public partial class SubpackageChatClient
             };
         partial void PrepareSendChatCompletionRequestArguments(
             global::System.Net.Http.HttpClient httpClient,
-            ref global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata,
+            ref global::OpenRouter.MetadataLevel? xOpenRouterMetadata,
             global::OpenRouter.ChatRequest request);
         partial void PrepareSendChatCompletionRequestRequest(
             global::System.Net.Http.HttpClient httpClient,
             global::System.Net.Http.HttpRequestMessage httpRequestMessage,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata,
             global::OpenRouter.ChatRequest request);
         partial void ProcessSendChatCompletionRequestResponse(
             global::System.Net.Http.HttpClient httpClient,
@@ -47,7 +47,7 @@ partial void ProcessSendChatCompletionRequestResponseContent(
         /// Create a chat completion<br/>
         /// Sends a request for a model response for the given chat conversation. Supports both streaming and non-streaming modes.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -57,14 +57,14 @@ partial void ProcessSendChatCompletionRequestResponseContent(
         public async global::System.Threading.Tasks.Task<global::OpenRouter.ChatResult> SendChatCompletionRequestAsync(
 
             global::OpenRouter.ChatRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             var __response = await SendChatCompletionRequestAsResponseAsync(
 
                 request: request,
-                xOpenRouterExperimentalMetadata: xOpenRouterExperimentalMetadata,
+                xOpenRouterMetadata: xOpenRouterMetadata,
                 requestOptions: requestOptions,
                 cancellationToken: cancellationToken
             ).ConfigureAwait(false);
@@ -75,7 +75,7 @@ partial void ProcessSendChatCompletionRequestResponseContent(
         /// Create a chat completion<br/>
         /// Sends a request for a model response for the given chat conversation. Supports both streaming and non-streaming modes.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="request"></param>
@@ -85,7 +85,7 @@ partial void ProcessSendChatCompletionRequestResponseContent(
         public async global::System.Threading.Tasks.Task<global::OpenRouter.AutoSDKHttpResponse<global::OpenRouter.ChatResult>> SendChatCompletionRequestAsResponseAsync(
 
             global::OpenRouter.ChatRequest request,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AutoSDKRequestOptions? requestOptions = default,
             global::System.Threading.CancellationToken cancellationToken = default)
         {
@@ -95,7 +95,7 @@ partial void ProcessSendChatCompletionRequestResponseContent(
                 client: HttpClient);
             PrepareSendChatCompletionRequestArguments(
                 httpClient: HttpClient,
-                xOpenRouterExperimentalMetadata: ref xOpenRouterExperimentalMetadata,
+                xOpenRouterMetadata: ref xOpenRouterMetadata,
                 request: request);
 
 
@@ -154,9 +154,9 @@ partial void ProcessSendChatCompletionRequestResponseContent(
                 } 
             }
 
-            if (xOpenRouterExperimentalMetadata != default)
+            if (xOpenRouterMetadata != default)
             {
-                __httpRequest.Headers.TryAddWithoutValidation("X-OpenRouter-Experimental-Metadata", xOpenRouterExperimentalMetadata?.ToValueString() ?? string.Empty);
+                __httpRequest.Headers.TryAddWithoutValidation("X-OpenRouter-Metadata", xOpenRouterMetadata?.ToValueString() ?? string.Empty);
             }
 
                             var __httpRequestContentBody = request.ToJson(JsonSerializerContext);
@@ -176,7 +176,7 @@ partial void ProcessSendChatCompletionRequestResponseContent(
                 PrepareSendChatCompletionRequestRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    xOpenRouterExperimentalMetadata: xOpenRouterExperimentalMetadata,
+                    xOpenRouterMetadata: xOpenRouterMetadata,
                     request: request);
 
                 return __httpRequest;
@@ -467,7 +467,7 @@ partial void ProcessSendChatCompletionRequestResponseContent(
                                         h => h.Key,
                                         h => h.Value));
                             }
-                            // Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Experimental-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.
+                            // Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.
                             if ((int)__response.StatusCode == 403)
                             {
                                 string? __content_403 = null;
@@ -900,7 +900,7 @@ partial void ProcessSendChatCompletionRequestResponseContent(
         /// Create a chat completion<br/>
         /// Sends a request for a model response for the given chat conversation. Supports both streaming and non-streaming modes.
         /// </summary>
-        /// <param name="xOpenRouterExperimentalMetadata">
+        /// <param name="xOpenRouterMetadata">
         /// Opt-in level for surfacing routing metadata on the response under `openrouter_metadata`.
         /// </param>
         /// <param name="cacheControl">
@@ -1009,7 +1009,7 @@ partial void ProcessSendChatCompletionRequestResponseContent(
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::OpenRouter.ChatResult> SendChatCompletionRequestAsync(
             global::System.Collections.Generic.IList<global::OpenRouter.ChatMessages> messages,
-            global::OpenRouter.MetadataLevel? xOpenRouterExperimentalMetadata = default,
+            global::OpenRouter.MetadataLevel? xOpenRouterMetadata = default,
             global::OpenRouter.AnthropicCacheControlDirective? cacheControl = default,
             global::OpenRouter.ChatDebugOptions? debug = default,
             double? frequencyPenalty = default,
@@ -1085,7 +1085,7 @@ partial void ProcessSendChatCompletionRequestResponseContent(
             };
 
             return await SendChatCompletionRequestAsync(
-                xOpenRouterExperimentalMetadata: xOpenRouterExperimentalMetadata,
+                xOpenRouterMetadata: xOpenRouterMetadata,
                 request: __request,
                 requestOptions: requestOptions,
                 cancellationToken: cancellationToken).ConfigureAwait(false);
diff --git a/src/libs/OpenRouter/openapi.yaml b/src/libs/OpenRouter/openapi.yaml
index 6a5de3d0..7dfac4ef 100644
--- a/src/libs/OpenRouter/openapi.yaml
+++ b/src/libs/OpenRouter/openapi.yaml
@@ -15,9 +15,9 @@
         ],
         "parameters": [
           {
-            "name": "X-OpenRouter-Experimental-Metadata",
+            "name": "X-OpenRouter-Metadata",
             "in": "header",
-            "description": "Opt-in to surface routing metadata on the response under `openrouter_metadata`. Defaults to `disabled`.",
+            "description": "Opt-in to surface routing metadata on the response under `openrouter_metadata`. Defaults to `disabled`. The legacy header `X-OpenRouter-Experimental-Metadata` is also accepted for backward compatibility.",
             "required": false,
             "schema": {
               "$ref": "#/components/schemas/MetadataLevel"
@@ -66,7 +66,7 @@
             }
           },
           "403": {
-            "description": "Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Experimental-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.",
+            "description": "Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.",
             "content": {
               "application/json": {
                 "schema": {
@@ -1058,9 +1058,9 @@
         ],
         "parameters": [
           {
-            "name": "X-OpenRouter-Experimental-Metadata",
+            "name": "X-OpenRouter-Metadata",
             "in": "header",
-            "description": "Opt-in to surface routing metadata on the response under `openrouter_metadata`. Defaults to `disabled`.",
+            "description": "Opt-in to surface routing metadata on the response under `openrouter_metadata`. Defaults to `disabled`. The legacy header `X-OpenRouter-Experimental-Metadata` is also accepted for backward compatibility.",
             "required": false,
             "schema": {
               "$ref": "#/components/schemas/MetadataLevel"
@@ -1109,7 +1109,7 @@
             }
           },
           "403": {
-            "description": "Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Experimental-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.",
+            "description": "Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.",
             "content": {
               "application/json": {
                 "schema": {
@@ -3310,9 +3310,9 @@
         ],
         "parameters": [
           {
-            "name": "X-OpenRouter-Experimental-Metadata",
+            "name": "X-OpenRouter-Metadata",
             "in": "header",
-            "description": "Opt-in to surface routing metadata on the response under `openrouter_metadata`. Defaults to `disabled`.",
+            "description": "Opt-in to surface routing metadata on the response under `openrouter_metadata`. Defaults to `disabled`. The legacy header `X-OpenRouter-Experimental-Metadata` is also accepted for backward compatibility.",
             "required": false,
             "schema": {
               "$ref": "#/components/schemas/MetadataLevel"
@@ -3351,7 +3351,7 @@
             }
           },
           "403": {
-            "description": "Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Experimental-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.",
+            "description": "Forbidden - Authentication successful but insufficient permissions, or a guardrail blocked the request. When guardrails block and the `X-OpenRouter-Metadata: enabled` header is present, the response includes `openrouter_metadata` with full routing context and a `pipeline` array containing guardrail stage details.",
             "content": {
               "application/json": {
                 "schema": {