diff --git a/src/strands/models/mistral.py b/src/strands/models/mistral.py
index 504e81c92..f44a11d30 100644
--- a/src/strands/models/mistral.py
+++ b/src/strands/models/mistral.py
@@ -496,8 +496,8 @@ async def stream(
 
                             yield self.format_chunk({"chunk_type": "message_stop", "data": choice.finish_reason})
 
-                            if hasattr(chunk, "usage"):
-                                yield self.format_chunk({"chunk_type": "metadata", "data": chunk.usage})
+                            if hasattr(chunk, "data") and hasattr(chunk.data, "usage") and chunk.data.usage:
+                                yield self.format_chunk({"chunk_type": "metadata", "data": chunk.data.usage})
 
         except Exception as e:
             if "rate" in str(e).lower() or "429" in str(e):
diff --git a/tests/strands/models/test_mistral.py b/tests/strands/models/test_mistral.py
index ad74bae89..338c66b19 100644
--- a/tests/strands/models/test_mistral.py
+++ b/tests/strands/models/test_mistral.py
@@ -451,9 +451,9 @@ async def test_stream(mistral_client, model, agenerator, alist, captured_warning
                     delta=unittest.mock.Mock(content="test stream", tool_calls=None),
                     finish_reason="end_turn",
                 )
-            ]
+            ],
+            usage=mock_usage,
         ),
-        usage=mock_usage,
     )
 
     mistral_client.chat.stream_async = unittest.mock.AsyncMock(return_value=agenerator([mock_event]))
@@ -492,9 +492,9 @@ async def test_tool_choice_not_supported_warns(mistral_client, model, agenerator
                     delta=unittest.mock.Mock(content="test stream", tool_calls=None),
                     finish_reason="end_turn",
                 )
-            ]
+            ],
+            usage=mock_usage,
         ),
-        usage=mock_usage,
     )
 
     mistral_client.chat.stream_async = unittest.mock.AsyncMock(return_value=agenerator([mock_event]))