diff --git a/api-reference/openapi.json b/api-reference/openapi.json
index 1425df5..a6a34b7 100644
--- a/api-reference/openapi.json
+++ b/api-reference/openapi.json
@@ -671,7 +671,7 @@
       },
       "post": {
         "summary": "Create Agent Session",
-        "description": "Start a conversation session with an agent and receive a join token for the\nsession transport (currently LiveKit WebRTC). Authenticate with an API key to\nstart sessions with any agent in your team; without credentials only agents\npublished as public are reachable, and the request `Origin` must match the\nagent's allowed origins.\n\n`language` (and `overrides.language`) accepts `en`, `ja`, `zh`, `ko`, `es`,\n`fr`, `de`; anything else is 422. Omit it to use the agent's configured\nbehavior (including automatic language detection when enabled).",
+        "description": "Start a conversation session with an agent and receive a join token for the\nsession transport (currently LiveKit WebRTC). Authenticate with an API key to\nstart sessions with any agent in your team; without credentials only agents\npublished as public are reachable, and the request `Origin` must match the\nagent's allowed origins.\n\n`language` (and `overrides.language`) accepts `en`, `ja`, `zh`, `ko`, `es`,\n`fr`, `de`; anything else is 422. Omit it to use the agent's configured\nspeaking language.",
         "security": [
           {
             "BearerAuth": []
@@ -11704,18 +11704,6 @@
       "PublicSystemToolsPatch": {
         "additionalProperties": false,
         "properties": {
-          "language_detection": {
-            "anyOf": [
-              {
-                "type": "boolean"
-              },
-              {
-                "type": "null"
-              }
-            ],
-            "default": null,
-            "title": "Language Detection"
-          },
           "hang_up_call": {
             "anyOf": [
               {
@@ -12058,11 +12046,6 @@
       },
       "AgentSystemToolsConfig": {
         "properties": {
-          "language_detection": {
-            "default": false,
-            "title": "Language Detection",
-            "type": "boolean"
-          },
           "hang_up_call": {
             "default": false,
             "title": "Hang Up Call",