●Change8

arize-phoenix-v14.0.0

Breaking Changes
📦 arize-phoenixView on GitHub →
⚠ 4 breaking✨ 19 features🐛 3 fixes⚡ 2 deprecations🔧 6 symbols

Summary

Version 14.0.0 introduces major architectural changes, including a subcommand-first CLI structure and the removal of legacy evaluation and client plumbing. Key features include enhanced agent tooling, PostgreSQL read replica support, and ephemeral experiment handling.

⚠️ Breaking Changes

  • The /v1/evaluations endpoint and associated Evaluations plumbing have been removed from the server.
  • Evals 1.0 has been deprecated and the legacy experiments module has been removed.
  • CLI flags now follow the subcommand instead of preceding it. Example: Change 'phoenix --dev serve' to 'phoenix serve --dev'.
  • The legacy client has been removed.

Migration Steps

  1. Review MIGRATION.md for detailed upgrade instructions.
  2. Update CLI commands to place flags after the subcommand (e.g., use 'phoenix serve --dev' instead of 'phoenix --dev serve').
  3. If using deprecated Evals 1.0 functionality, migrate to the new system.
  4. Remove any usage of the removed /v1/evaluations endpoint.
  5. Remove any usage of the removed legacy client.

✨ New Features

  • Added support for [@defer] to Relay and ProjectPageHeader.
  • Added read replica routing support for PostgreSQL.
  • Added Strands Agents integration docs and onboarding snippet.
  • Agent: Added ask_user elicitation tool with carousel UI.
  • Agent: Added backend MCP docs tool via Mintlify integration.
  • Agent: Chat streaming is maintained when the panel closes.
  • Agent: Implemented PXI FAB, panel sizing, and stop button.
  • Agent: Traced PXI chat requests locally and remotely.
  • Implemented background experiment runner.
  • CLI: Restructured CLI into subcommand-first architecture with serve/db commands.
  • Experiments: Defined ephemeral experiments and added ExperimentSweeper daemon.
  • Experiments: Implemented structured error table with sanitized messages.
  • GraphQL: Require explicit 'first' argument for forward pagination.
  • Included span and experiment run in error subscription payloads.
  • Onboarding: Added new provider integrations and environment variable support.
  • Playground: Added experiment record toggle with ephemeral tracking.
  • Implemented polling for the experiments table when jobs are running.
  • Using non-streaming for LLM evaluator calls.
  • Using raw vendor response as output.value for non-streaming playground.

🐛 Bug Fixes

  • Experiments: Filtered errors by level, used LATERAL join, and renamed to ExperimentLog.
  • Experiments: Fixed lastError query failing on SQLite.
  • Persisted error records for all terminal experiment outcomes.

Affected Symbols

/v1/evaluations endpointevaluations plumbingevals 1.0legacy experiments moduleCLI flagslegacy client

⚡ Deprecations

  • Evals 1.0 is deprecated.
  • Legacy experiments module is removed.