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Add operation.cost span attribute to model request spans, rename ModelResponse.price() to .cost() #2767

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Merged
alexmojaki merged 6 commits into from
Sep 4, 2025
Merged

Add operation.cost span attribute to model request spans, rename ModelResponse.price() to .cost() #2767

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40a0008
Add operation.cost span attribute
alexmojaki Sep 2, 2025
3f2b5c5
make request and response models differ
alexmojaki Sep 2, 2025
4ddc5bf
Merge branch 'main' into alex/operation.cost
alexmojaki Sep 2, 2025
f6454f5
price -> cost
alexmojaki Sep 3, 2025
12df819
Merge branch 'alex/operation.cost' of github.com:pydantic/pydantic-ai…
alexmojaki Sep 3, 2025
0c19a2b
Merge branch 'main' of github.com:pydantic/pydantic-ai into alex/oper…
alexmojaki Sep 3, 2025
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5 changes: 5 additions & 0 deletions pydantic_ai_slim/pydantic_ai/models/instrumented.py
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Original file line number Diff line number Diff line change
Expand Up @@ -420,10 +420,15 @@ def _record_metrics():
return

self.instrumentation_settings.handle_messages(messages, response, system, span)
try:
cost_attributes = {'operation.cost': float(response.price().total_price)}
except LookupError:
cost_attributes = {}
span.set_attributes(
{
**response.usage.opentelemetry_attributes(),
'gen_ai.response.model': response_model,
**cost_attributes,
}
)
span.update_name(f'{operation} {request_model}')
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