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fix(openai): capture token usage for Responses API streaming #1680

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fix(openai): capture token usage for Responses API streaming #1680

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60fb29f
fix(openai): capture token usage for Responses API streaming (#1651)
wingding12 Jan 31, 2026
f9adef5
test: expect token usage attributes in test_responses_stream snapshot
wingding12 Jan 31, 2026
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7 changes: 7 additions & 0 deletions logfire/_internal/integrations/llm_providers/openai.py
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Original file line number Diff line number Diff line change
Expand Up @@ -229,6 +229,13 @@ def get_attributes(self, span_data: dict[str, Any]) -> dict[str, Any]:
response = self.get_response_data()
if response:
span_data['events'] = span_data['events'] + responses_output_events(response)
usage = getattr(response, 'usage', None)
input_tokens = getattr(usage, 'input_tokens', None)
output_tokens = getattr(usage, 'output_tokens', None)
if isinstance(input_tokens, int):
span_data[INPUT_TOKENS] = input_tokens
if isinstance(output_tokens, int):
span_data[OUTPUT_TOKENS] = output_tokens
return span_data


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4 changes: 4 additions & 0 deletions tests/otel_integrations/test_openai.py
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Expand Up @@ -1954,6 +1954,8 @@ def test_responses_stream(exporter: TestExporter) -> None:
'async': False,
'gen_ai.operation.name': 'chat',
'duration': 1.0,
'gen_ai.usage.input_tokens': 13,
'gen_ai.usage.output_tokens': 9,
'logfire.json_schema': {
'type': 'object',
'properties': {
Expand All @@ -1964,6 +1966,8 @@ def test_responses_stream(exporter: TestExporter) -> None:
'async': {},
'gen_ai.operation.name': {},
'duration': {},
'gen_ai.usage.input_tokens': {},
'gen_ai.usage.output_tokens': {},
},
},
'logfire.tags': ('LLM',),
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