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07.03.2025

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Cost Summaries In Trace Headers

You can now see total and segmented costs directly in your Phoenix trace headers for faster debugging and spend visibility.

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New Features:

  • Extended TraceDetails GraphQL query to include costSummary fields (prompt, completion, total).
  • Passes costSummary data into TraceHeader and displays formatted total cost.
  • Adds a tooltip in TraceHeader showing prompt vs. completion cost breakdown.

feat: add cost summary to trace header by RogerHYang · Pull Request #8406 · Arize-ai/phoenix

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