Releasesby Glypharize-phoenix: v15.9.0
15.9.0 (2026-05-14) Features agents: backfill TOOL spans for external tool returns in agent wrapper (4b221b9) Bug Fixes agent: clarify PXI remote trace sharing consent (f5da114) handle invalid GraphQL node ids (35c8f3d) Documentation skills: weekly audit , 2026-05-13 (8349361)
Also shipped May 14, 2026Arize AI in May 2026 →
Workers - New Domains tab in the Workers dashboard
In your Worker's dashboard, there is now a dedicated Domains tab where you can purchase a new domain through Cloudflare Registrar and have it automatically connected, add an existing domain , and manage all of your Worker's routing in one place.
Code Intelligence
Code Intelligence gives Linear Agent controlled access to your codebase, turning repositories into shared product context your whole team can use. With Code Intelligence, Linear Agent can reason about how your product actually works, not just what’s captured in issues, projects, and docs.
Seer can send bugs to GitHub Copilot for the fix. Now in open beta
Send Seer’s root cause to Copilot for the fix.
Performance Risks Inbox is now in Public Preview
About Performance Risks Inbox Traditional monitoring is often reactive, alerting you only after a service is down or error rates have spiked. Performance Risks Inbox shifts your strategy from reactive to proactive.
Weights & Biases 0.27.0
Notable Changes This version drops support for Python 3.9 and Pydantic v1. Pydantic v2.6 or newer is now required. Added The stop_on_fatal_error setting to stop a run (using stop_fn ) after a fatal error that prevents it from uploading metrics ( @timoffex in #11774 ) New wandb.sandbox package and the wandb beta sandbox cli for using wandb sandbox (...
FLUX Outpainting , Extend Any Image in Any Direction
A new FLUX Tools endpoint that extends an image beyond its borders in a single call , no prompt required.
More from phoenixEvery phoenix release →
arize-phoenix: v15.10.0
15.10.0 (2026-05-15) Features add trace feedback toolbar to session turns (1bd96b9) agents: curate agent model menu (de8c915) border and divider cleanup with improved w storybook support (acd1626) cap agent session retention (1c28249) pxi button styles and thinking glyph animation (4766244) trace: convert OTel GenAI semconv attrs to OpenInference (6248d20)...
arize-phoenix-client: v2.7.0
2.7.0 (2026-05-15) Features agents: add /agents/{agent_id}/sessions/{session_id}/summary endpoint (419c3a0) agents: Playground manipulation tools w/ confirmation (37dc417) agents: rip v1 /chat route and associated code (71ceeb3) app: type frontend REST calls against the OpenAPI schema (590669d) cap agent session retention (1c28249) client: support ATIF v1.7...
arize-phoenix: v15.8.0
15.8.0 (2026-05-13) Features agents: populate project_sessions for /chat and /summary traces (11275b4) playground: Add Anthropic and Google thinking controls (c132f0c) pxi tool layout rebalancing (d8d5322) Bug Fixes cost: update built-in model token prices (dde26f6) prevent prototype pollution in DatasetPreviewTable (f0a2f9e) validate projection expressions...
arize-phoenix: v15.7.0
15.7.0 (2026-05-13) Features add trace user feedback annotations (3797110) agents: rip v1 /chat route and associated code (71ceeb3) make session turn messages expandable (f898dc0) session-tagged identifiers for open/axial coding workflows (6dceb10) ui: move toasts to top-center with sonner-style stacking (1cc1ce7) Bug Fixes keep PXI send button in stop mode...
arize-phoenix: v15.6.0
15.6.0 (2026-05-10) Features agents: add /agents/{agent_id}/sessions/{session_id}/summary endpoint (419c3a0) agents: Playground manipulation tools w/ confirmation (37dc417) playground: default provider/model as a user preference (4487740) tracing: always show metrics aside, remove legacy stats header (ea3d7e7) Bug Fixes pxi: resolve interrupted tool calls...
arize-phoenix: v15.11.0
15.11.0 (2026-05-19) Features agents: Generative UI rendering within agent chats (645d7a5) Bug Fixes devops: tolerate missing pnpm-lock.yaml in oidc-server build and dev-mock-llm (4332255) server: handle empty header values in custom provider config (a329946)
arize-phoenix: v15.5.0
15.5.0 (2026-05-08) Features agents: wire /chat-v2 with tools behind experimental toggle (7706554) app: type frontend REST calls against the OpenAPI schema (590669d) support x-project-name HTTP header for OTLP trace ingestion (7d10386) Update session details turns layout (a1be820) Bug Fixes add types-aiobotocore-bedrock-runtime in container/aws extras...
arize-phoenix: v16.0.0
16.0.0 (2026-05-21) MIGRATION.md ⚠ BREAKING CHANGES - Sandboxing and Code Evaluators Features Phoenix now lets you compose evaluation strategies in code. Most eval tooling hands you a fixed menu of judge templates. Real evaluation is rarely that tidy. Code Evaluators enable you to build evaluation criteria the way you want.