diff --git a/docs/agents.md b/docs/agents.md
index e32b30c30..a16aacf0a 100644
--- a/docs/agents.md
+++ b/docs/agents.md
@@ -148,6 +148,7 @@ async def main():
                 model_name='gpt-4o',
                 timestamp=datetime.datetime(...),
                 kind='response',
+                vendor_id=None,
             )
         ),
         End(data=FinalResult(output='Paris', tool_name=None, tool_call_id=None)),
@@ -212,6 +213,7 @@ async def main():
                     model_name='gpt-4o',
                     timestamp=datetime.datetime(...),
                     kind='response',
+                    vendor_id=None,
                 )
             ),
             End(data=FinalResult(output='Paris', tool_name=None, tool_call_id=None)),
@@ -808,6 +810,7 @@ with capture_run_messages() as messages:  # (2)!
                 model_name='gpt-4o',
                 timestamp=datetime.datetime(...),
                 kind='response',
+                vendor_id=None,
             ),
             ModelRequest(
                 parts=[
@@ -834,6 +837,7 @@ with capture_run_messages() as messages:  # (2)!
                 model_name='gpt-4o',
                 timestamp=datetime.datetime(...),
                 kind='response',
+                vendor_id=None,
             ),
         ]
         """
diff --git a/docs/message-history.md b/docs/message-history.md
index 608113471..2a8243c55 100644
--- a/docs/message-history.md
+++ b/docs/message-history.md
@@ -67,6 +67,7 @@ print(result.all_messages())
         model_name='gpt-4o',
         timestamp=datetime.datetime(...),
         kind='response',
+        vendor_id=None,
     ),
 ]
 """
@@ -145,6 +146,7 @@ async def main():
                 model_name='gpt-4o',
                 timestamp=datetime.datetime(...),
                 kind='response',
+                vendor_id=None,
             ),
         ]
         """
@@ -204,6 +206,7 @@ print(result2.all_messages())
         model_name='gpt-4o',
         timestamp=datetime.datetime(...),
         kind='response',
+        vendor_id=None,
     ),
     ModelRequest(
         parts=[
@@ -226,6 +229,7 @@ print(result2.all_messages())
         model_name='gpt-4o',
         timestamp=datetime.datetime(...),
         kind='response',
+        vendor_id=None,
     ),
 ]
 """
@@ -332,6 +336,7 @@ print(result2.all_messages())
         model_name='gpt-4o',
         timestamp=datetime.datetime(...),
         kind='response',
+        vendor_id=None,
     ),
     ModelRequest(
         parts=[
@@ -354,6 +359,7 @@ print(result2.all_messages())
         model_name='gemini-1.5-pro',
         timestamp=datetime.datetime(...),
         kind='response',
+        vendor_id=None,
     ),
 ]
 """
diff --git a/docs/tools.md b/docs/tools.md
index edd99664f..5696f7f04 100644
--- a/docs/tools.md
+++ b/docs/tools.md
@@ -99,6 +99,7 @@ print(dice_result.all_messages())
         model_name='gemini-1.5-flash',
         timestamp=datetime.datetime(...),
         kind='response',
+        vendor_id=None,
     ),
     ModelRequest(
         parts=[
@@ -125,6 +126,7 @@ print(dice_result.all_messages())
         model_name='gemini-1.5-flash',
         timestamp=datetime.datetime(...),
         kind='response',
+        vendor_id=None,
     ),
     ModelRequest(
         parts=[
@@ -149,6 +151,7 @@ print(dice_result.all_messages())
         model_name='gemini-1.5-flash',
         timestamp=datetime.datetime(...),
         kind='response',
+        vendor_id=None,
     ),
 ]
 """
diff --git a/pydantic_ai_slim/pydantic_ai/agent.py b/pydantic_ai_slim/pydantic_ai/agent.py
index 25307ed02..98178e592 100644
--- a/pydantic_ai_slim/pydantic_ai/agent.py
+++ b/pydantic_ai_slim/pydantic_ai/agent.py
@@ -554,6 +554,7 @@ async def main():
                         model_name='gpt-4o',
                         timestamp=datetime.datetime(...),
                         kind='response',
+                        vendor_id=None,
                     )
                 ),
                 End(data=FinalResult(output='Paris', tool_name=None, tool_call_id=None)),
@@ -1717,6 +1718,7 @@ async def main():
                     model_name='gpt-4o',
                     timestamp=datetime.datetime(...),
                     kind='response',
+                    vendor_id=None,
                 )
             ),
             End(data=FinalResult(output='Paris', tool_name=None, tool_call_id=None)),
@@ -1855,6 +1857,7 @@ async def main():
                             model_name='gpt-4o',
                             timestamp=datetime.datetime(...),
                             kind='response',
+                            vendor_id=None,
                         )
                     ),
                     End(data=FinalResult(output='Paris', tool_name=None, tool_call_id=None)),
diff --git a/pydantic_ai_slim/pydantic_ai/messages.py b/pydantic_ai_slim/pydantic_ai/messages.py
index 896e952c9..f0a71b100 100644
--- a/pydantic_ai_slim/pydantic_ai/messages.py
+++ b/pydantic_ai_slim/pydantic_ai/messages.py
@@ -566,6 +566,9 @@ class ModelResponse:
     kind: Literal['response'] = 'response'
     """Message type identifier, this is available on all parts as a discriminator."""
 
+    vendor_id: str | None = None
+    """Vendor ID as specified by the model provider. This can be used to track the specific request to the model."""
+
     def otel_events(self) -> list[Event]:
         """Return OpenTelemetry events for the response."""
         result: list[Event] = []
diff --git a/pydantic_ai_slim/pydantic_ai/models/bedrock.py b/pydantic_ai_slim/pydantic_ai/models/bedrock.py
index a8882ba62..5996d7b64 100644
--- a/pydantic_ai_slim/pydantic_ai/models/bedrock.py
+++ b/pydantic_ai_slim/pydantic_ai/models/bedrock.py
@@ -269,7 +269,8 @@ async def _process_response(self, response: ConverseResponseTypeDef) -> tuple[Mo
             response_tokens=response['usage']['outputTokens'],
             total_tokens=response['usage']['totalTokens'],
         )
-        return ModelResponse(items, model_name=self.model_name), u
+        vendor_id = response.get('ResponseMetadata', {}).get('RequestId', None)
+        return ModelResponse(items, model_name=self.model_name, vendor_id=vendor_id), u
 
     @overload
     async def _messages_create(
diff --git a/tests/test_agent.py b/tests/test_agent.py
index 720047d89..1e5523f0e 100644
--- a/tests/test_agent.py
+++ b/tests/test_agent.py
@@ -1697,6 +1697,7 @@ def test_binary_content_all_messages_json():
             {
                 'parts': [{'content': 'success (no tool calls)', 'part_kind': 'text'}],
                 'model_name': 'test',
+                'vendor_id': None,
                 'timestamp': IsStr(),
                 'kind': 'response',
             },