# arize-phoenix: v20.12.0

Category: safety-research
Published: 2026-09-14T20:34:55Z
Source: [Arize Phoenix releases](https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.12.0)
Agent usefulness: 82/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-19T00:17:44.195Z
Tags: observability, evaluation, tracing

## Human Summary
Arize Phoenix releases published arize-phoenix: v20.12.0. 20.12.0 (https://github.com/Arize-ai/phoenix/compare/arize-phoenix-v20.11.0...arize-phoenix-v20.12.0) (2026-09-14) Features api: expose trace and session filter expressions ( 16077 (https://github.com/Arize-ai/phoenix/issues/16077)) ( d613de7…

## Agent Summary
Treat arize-phoenix: v20.12.0 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: v20.12.0. 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: 20.12.0 (https://github.com/Arize-ai/phoenix/compare/arize-phoenix-v20.11.0...arize-phoenix-v20.12.0) (2026-09-14) Features api: expose trace and session filter expressions ( 16077 (https://github.com/Arize-ai/phoenix/issues/16077)) ( d613de7 (https://github.com/Arize-ai/phoenix/commit/d613de73943972bef1dd966de4d5e36254235d06)) server: add GET /datasets/{dataset identifier}/splits ( e60697f (https://github.com/Arize-ai/phoenix/commit/e60697fe1e24ca84909e602b207b62af42bb3860)), closes 12090 (https://github.com/Arize-ai/phoenix/issues/12090) Bug Fixes cost: update built-in model token prices ( 25b95d7 (https://github.com/Arize-ai/phoenix/commit/25b95d7fd4d2dbeaf6faa3fe8b72fde255f60e47)) server: address review findings for GET /datasets/{dataset identifier}/splits ( 655802b (https://github.com/Arize-ai/phoenix/commit/655802b21016aa74d42dec2d4e38ea6fdc5ea969)) server: scope listed dataset…

## 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.