# arize-phoenix-evals: v3.9.0

Category: safety-research
Published: 2026-09-21T20:47:00Z
Source: [Arize Phoenix releases](https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-evals-v3.9.0)
Agent usefulness: 82/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-22T00:17:42.382Z
Tags: observability, evaluation, tracing

## Human Summary
Arize Phoenix releases published arize-phoenix-evals: v3.9.0. 3.9.0 (2026-09-21) Features evals: add retrieval relevance evaluator ( 14766 ) ( 7efa7b2 ) evals: add session-level pii detection evaluator ( 15096 ) ( 0e3b2c2 ) evals: completeness evaluator ( 15767 ) ( 63805d0 ) evals: deprecate document relevance evaluators ( 15991 ) ( d67ea3f ) Bug Fixes…

## Agent Summary
Treat arize-phoenix-evals: v3.9.0 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.

## Body
Arize Phoenix releases published arize-phoenix-evals: v3.9.0. This release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: 3.9.0 (2026-09-21) Features evals: add retrieval relevance evaluator ( 14766 ) ( 7efa7b2 ) evals: add session-level pii detection evaluator ( 15096 ) ( 0e3b2c2 ) evals: completeness evaluator ( 15767 ) ( 63805d0 ) evals: deprecate document relevance evaluators ( 15991 ) ( d67ea3f ) Bug Fixes evals: accept role aliases in PromptTemplate message lists ( 16002 ) ( 767847c ) evals: use non-blocking sleep in async rate limiter ( 15404 ) ( 2ecfd47 ) evals: validate initial request rate ( 16227 ) ( b8e5cf8 ) upgrade to anthropic SDK v1 ( 15588 ) ( b28cf94 )

## Recommended actions
- Review the official Arize Phoenix releases release notes before upgrading.
- Check compatibility, migration, and security notes against your current agent stack.
- Run focused regression tests before production rollout.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.