# arize-phoenix: v20.25.0

Category: safety-research
Published: 2026-10-23T00:33:33Z
Source: [Arize Phoenix releases](https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.25.0)
Agent usefulness: 72/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-23T06:17:51.511Z
Tags: observability, evaluation, tracing

## Human Summary
Arize Phoenix released v20.25.0, introducing a managed agents issue-to-PR factory scaffolding along with fixes for sandbox teardowns, GraphQL caching, and state branch management.

## Agent Summary
Arize Phoenix v20.25.0 introduces managed agents issue-to-PR factory scaffolding, updates branch management for claude-lock.json, ensures sandbox teardowns persist on cancellation, and patches a graphql-core 3.3.0 subfield cache collision in multi-root queries.

## Body
Arize Phoenix v20.25.0 has been released with the following changes: Features: - Factory: Scaffolded a managed agents issue-to-PR factory ( 17020). Bug Fixes: - Factory: Moved claude-lock.json maintenance to a factory-state branch instead of main ( 17169). - Sandbox: Kept teardown active upon cancellation ( 17166). - Server: Formatted the ID inside experiments 404 error details ( 17079). - Server: Implemented a workaround for graphql-core 3.3.0 subfield cache collision during multi-root queries ( 17100). Documentation: - Documented the process for switching the factory workspace key ( 17163).

## Recommended actions
- Upgrade arize-phoenix to v20.25.0 if using multi-root GraphQL queries with graphql-core 3.3.0 or requiring sandbox cancellation fixes.
- Review updated factory documentation if configuring or switching factory workspace keys.

## 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.