---
title: "07.03.2025: Cost summaries in trace headers"
description: Available in Phoenix 11.4+
---

<Update label="07.03.2025">

## Cost Summaries In Trace Headers

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    <iframe src="https://cdn.iframe.ly/v6DMYMvx" width={1000} height={400} allowFullScreen></iframe>
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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**.

<Card title="feat: add cost summary to trace header by RogerHYang · Pull Request #8406 · Arize-ai/phoenix" icon="github" href="https://github.com/Arize-ai/phoenix/pull/8406" horizontal>
  GitHub
</Card>
</Update>