Skip to content

phoenix

varize-phoenix-v19.4.0 scope: arize-phoenix Feature

This release adds 4 notable features for engineering teams evaluating rollout.

Published 5d Tracing
✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ 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

Affected surfaces

auth

Summary

AI summary

Updates 19.4.0, Bug Fixes, and Miscellaneous Chores across a mixed release.

Full changelog

19.4.0 (2026-07-22)

Features

  • components: align span kind icon and timeline bar colors with token treatment (#14573) (51cf276)
  • components: make IDBadge the consolidated click-to-copy ID element (#14567) (9445683)
  • js: upgrade phoenix-otel to openinference-vercel v3 for AI SDK v7 spans (#14563) (30f0827)
  • tracing: redesign span header into identity and meta rows (#14568) (b1a6359)

Bug Fixes

  • server: apply IP rate limiting when PHOENIX_HOST_ROOT_PATH is set (#14612) (5ae4b51)
  • server: serve HEAD on the OAuth2/OIDC discovery documents (#14611) (9e289aa)
  • ui: keep PXI button in nav beside drawers (#14577) (59d992f)

Documentation

Miscellaneous Chores

Weekly OSS security release digest.

The CVE patches and breaking changes that affected production tools this week. One email, every Sunday.

No spam, unsubscribe anytime.

Share this release

Track phoenix

Get notified when new releases ship.

Sign up free

About phoenix

AI Observability & Evaluation

All releases →

Related context

Earlier breaking changes

Beta — feedback welcome: [email protected]