✓ No known CVEs patched
✓ No known CVEs patched in this version
Topics
agents
ai-monitoring
ai-observability
aiengineering
anthropic
datasets
+10 more
evals
langchain
llamaindex
llm-eval
llm-evaluation
llmops
llms
openai
prompt-engineering
smolagents
Summary
AI summaryAdded filter-based DELETE endpoints for annotations and included token counts in payloads.
Full changelog
15.4.0 (2026-05-05)
Features
- agents: agent set_time_range tool with hardened context injection (#13022) (115c08b)
- agents: ToolPart styles and subcomponents (#12894) (0d4e16b)
- api: add filter-based DELETE endpoints for span/trace/session annotations (#12928) (12779fb)
- rest-api: include token counts in span/trace/session payloads (#12926) (c0c0edb)
- simplify trace/span status icons, use status badge in panel views (#12972) (d8e3915)
- vendor passthrough tools support (#12533) (41e8fe0)
Bug Fixes
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Related context
Related tools
Earlier breaking changes
- varize-phoenix-v17.0.0 Adds system settings for admin-managed assistant enablement and trace recording policy
- varize-phoenix-v16.0.0 Sandboxing and Code Evaluators introduce breaking changes in Phoenix v16.0.0.
- varize-phoenix-v15.7.0 Removes v1 /chat route and associated code
Beta — feedback welcome: [email protected]