07.03.2025: Cost Summaries in Trace Headers 💸

Available in Phoenix 11.4+

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

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/phoenixGitHub