diff --git a/swagger/docs.go b/swagger/docs.go
index f20644160..edcecb4be 100644
--- a/swagger/docs.go
+++ b/swagger/docs.go
@@ -3966,12 +3966,18 @@ const docTemplate = `{
                 "name": {
                     "type": "string"
                 },
+                "signature": {
+                    "type": "string"
+                },
                 "source": {
                     "$ref": "#/definitions/schema.AnthropicImageSource"
                 },
                 "text": {
                     "type": "string"
                 },
+                "thinking": {
+                    "type": "string"
+                },
                 "tool_use_id": {
                     "type": "string"
                 },
@@ -4039,6 +4045,14 @@ const docTemplate = `{
                 "temperature": {
                     "type": "number"
                 },
+                "thinking": {
+                    "description": "Thinking gates extended-thinking output. We only surface thinking\ncontent blocks when the client explicitly opts in, matching Anthropic's\nAPI where thinking is off unless requested.",
+                    "allOf": [
+                        {
+                            "$ref": "#/definitions/schema.AnthropicThinkingParam"
+                        }
+                    ]
+                },
                 "tool_choice": {},
                 "tools": {
                     "type": "array",
@@ -4086,6 +4100,18 @@ const docTemplate = `{
                 }
             }
         },
+        "schema.AnthropicThinkingParam": {
+            "type": "object",
+            "properties": {
+                "budget_tokens": {
+                    "type": "integer"
+                },
+                "type": {
+                    "description": "\"enabled\" | \"disabled\"",
+                    "type": "string"
+                }
+            }
+        },
         "schema.AnthropicTool": {
             "type": "object",
             "properties": {
diff --git a/swagger/swagger.json b/swagger/swagger.json
index 5af1c479b..ad81cb2d2 100644
--- a/swagger/swagger.json
+++ b/swagger/swagger.json
@@ -3963,12 +3963,18 @@
                 "name": {
                     "type": "string"
                 },
+                "signature": {
+                    "type": "string"
+                },
                 "source": {
                     "$ref": "#/definitions/schema.AnthropicImageSource"
                 },
                 "text": {
                     "type": "string"
                 },
+                "thinking": {
+                    "type": "string"
+                },
                 "tool_use_id": {
                     "type": "string"
                 },
@@ -4036,6 +4042,14 @@
                 "temperature": {
                     "type": "number"
                 },
+                "thinking": {
+                    "description": "Thinking gates extended-thinking output. We only surface thinking\ncontent blocks when the client explicitly opts in, matching Anthropic's\nAPI where thinking is off unless requested.",
+                    "allOf": [
+                        {
+                            "$ref": "#/definitions/schema.AnthropicThinkingParam"
+                        }
+                    ]
+                },
                 "tool_choice": {},
                 "tools": {
                     "type": "array",
@@ -4083,6 +4097,18 @@
                 }
             }
         },
+        "schema.AnthropicThinkingParam": {
+            "type": "object",
+            "properties": {
+                "budget_tokens": {
+                    "type": "integer"
+                },
+                "type": {
+                    "description": "\"enabled\" | \"disabled\"",
+                    "type": "string"
+                }
+            }
+        },
         "schema.AnthropicTool": {
             "type": "object",
             "properties": {
diff --git a/swagger/swagger.yaml b/swagger/swagger.yaml
index a90ef2088..28ebbd94d 100644
--- a/swagger/swagger.yaml
+++ b/swagger/swagger.yaml
@@ -516,10 +516,14 @@ definitions:
         type: boolean
       name:
         type: string
+      signature:
+        type: string
       source:
         $ref: '#/definitions/schema.AnthropicImageSource'
       text:
         type: string
+      thinking:
+        type: string
       tool_use_id:
         type: string
       type:
@@ -564,6 +568,13 @@ definitions:
         type: string
       temperature:
         type: number
+      thinking:
+        allOf:
+        - $ref: '#/definitions/schema.AnthropicThinkingParam'
+        description: |-
+          Thinking gates extended-thinking output. We only surface thinking
+          content blocks when the client explicitly opts in, matching Anthropic's
+          API where thinking is off unless requested.
       tool_choice: {}
       tools:
         items:
@@ -595,6 +606,14 @@ definitions:
       usage:
         $ref: '#/definitions/schema.AnthropicUsage'
     type: object
+  schema.AnthropicThinkingParam:
+    properties:
+      budget_tokens:
+        type: integer
+      type:
+        description: '"enabled" | "disabled"'
+        type: string
+    type: object
   schema.AnthropicTool:
     properties:
       description: