feat: Add braintrust.span_attributes type tag to LLM spans#57
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Andrew Kent (realark)
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Andrew Kent (realark)
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LGTM -- if you haven't already, I'd recommend running the examples to make sure this shows up as expected in the UI (I'm pretty sure this is correct but usually good to verify)
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Fixes: #52
Sets {"type":"llm"} span attribute on OpenAI and Anthropic instrumentation to enable LLM duration metrics and UI features like the "Try prompt" button in the Braintrust UI. Matches the pattern already implemented in the Agent Framework integration (SpanTagHelper.SetSpanType).
Changes:
Test assertions verify span attributes are set correctly on both OpenAI and Anthropic spans.