20.10.0 (2026-09-11)
Features
- add Claude Code plugin and marketplace (ff2abd8)
- add installable Phoenix Codex plugin (bdb3178)
- dsl: span-level cost filtering (#15172) (9cad275)
- evals: completeness evaluator (#15767) (63805d0)
- filters: support filtering annotations by identifier (#15817) (6e4c368)
- mcp: add a Cursor plugin for the remote MCP server and public skills (570d280)
- mcp: include the Phoenix docs MCP in the Cursor plugin (75fd29c)
- prompts: expose version metadata in GraphQL (#15979) (4595ea2)
- prompts: expose version metadata in REST API (#15980) (2b73847)
- ui: show cache read/write in cumulative token count tooltips (#15838) (9a2074a)
Bug Fixes
- cost: keep image generation models in the cost manifest and add gpt-image-2.5 (d58a42e)
- cost: update built-in model token prices (47ae071)
- cost: update built-in model token prices (#16052) (65beed4)
- deps: update arize-phoenix-client to 3.5.0 (1f7cec2)
- deps: update arize-phoenix-evals to 3.7.0 (95f1cc0)
- filter: use default_factory for MappingProxyType fields in _FilterBindings (#16106) (95918f6)
- make Phoenix Codex plugin endpoint configurable (0452996)
- mcp: say in the execute description which direct tools call_tool cannot reach (#15908) (ff94fc5)
- plugin: keep the Phoenix API key out of mcp-remote's argv (19a4afc)
- use Phoenix brand blue for plugin brandColor (a8a56be)
Documentation
- add agents plugin keyword (b11a9d9)
- add Harbor integration guide and agent skill (#15874) (e2e5143)
- add Phoenix release notes (96fe15d)
- focus plugin copy on agent traces (92ce6a7)
- reorder 09.08 release notes and add ranking rules to the skill (361a689)
- sharpen Phoenix plugin marketplace copy (c181eb2)
- tighten plugin starter prompts (774ea8a)
- update Phoenix plugin URL (b093465)