diff --git a/libs/partners/anthropic/Makefile b/libs/partners/anthropic/Makefile
index 43404f5c284..136c4debc85 100644
--- a/libs/partners/anthropic/Makefile
+++ b/libs/partners/anthropic/Makefile
@@ -14,7 +14,7 @@ test tests:
 	uv run --group test pytest -vvv --disable-socket --allow-unix-socket $(TEST_FILE)
 
 integration_test integration_tests:
-	uv run --group test --group test_integration pytest -vvv --timeout 30 tests/integration_tests/test_chat_models.py::test_async_stream_twice
+	uv run --group test --group test_integration pytest -vvv --timeout 30 $(TEST_FILE)
 
 test_watch:
 	uv run --group test ptw --snapshot-update --now . -- -vv $(TEST_FILE)
diff --git a/libs/partners/anthropic/profile.yappi b/libs/partners/anthropic/profile.yappi
new file mode 100644
index 00000000000..21443b3120f
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diff --git a/libs/partners/anthropic/profile_master.yappi b/libs/partners/anthropic/profile_master.yappi
new file mode 100644
index 00000000000..ceed3938204
Binary files /dev/null and b/libs/partners/anthropic/profile_master.yappi differ
diff --git a/libs/partners/anthropic/test.py b/libs/partners/anthropic/test.py
new file mode 100644
index 00000000000..8e155cfd661
--- /dev/null
+++ b/libs/partners/anthropic/test.py
@@ -0,0 +1,46 @@
+import cProfile
+import asyncio
+
+from langchain_anthropic import ChatAnthropic
+from langchain_core.messages import AIMessageChunk
+
+
+MODEL_NAME = "claude-3-5-haiku-latest"
+
+
+async def test_stream_usage() -> None:
+    """Test usage metadata can be excluded."""
+    model = ChatAnthropic(model_name=MODEL_NAME, stream_usage=False)
+    async for token in model.astream("hi"):
+        assert isinstance(token, AIMessageChunk)
+        assert token.usage_metadata is None
+    # check we override with kwarg
+    model = ChatAnthropic(model_name=MODEL_NAME)
+    assert model.stream_usage
+    async for token in model.astream("hi", stream_usage=False):
+        assert isinstance(token, AIMessageChunk)
+        assert token.usage_metadata is None
+
+
+# def run_async(func, *args, **kwargs):
+#     return asyncio.get_event_loop().run_until_complete(func(*args, **kwargs))
+
+# if __name__ == "__main__":
+#     profiler = cProfile.Profile()
+#     profiler.enable()
+#     run_async(test_stream_usage)   # your async function here
+#     profiler.disable()
+#     profiler.dump_stats('test_stream_usage_master.prof')  # or 'test_stream_usage.out'
+
+
+
+import yappi
+
+
+def run_async(func, *args, **kwargs):
+    return asyncio.get_event_loop().run_until_complete(func(*args, **kwargs))
+
+yappi.start()
+run_async(test_stream_usage)
+yappi.stop()
+yappi.get_func_stats().save('profile.yappi', type='pstat')  # pstat format
diff --git a/libs/partners/anthropic/test_stream_usage.prof b/libs/partners/anthropic/test_stream_usage.prof
new file mode 100644
index 00000000000..7db1f50c92d
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diff --git a/libs/partners/anthropic/test_stream_usage_master.prof b/libs/partners/anthropic/test_stream_usage_master.prof
new file mode 100644
index 00000000000..2d065aa738a
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