September 2025 Release Notes

New Platform Features

  • Custom Metrics (Evals)
  • Dashboard Versioning feature for easier roll backs
  • New Workspace home

Engine Release Notes

Enhancements

  • Span Query Improvements:
    • New GET endpoint /v1/spans/query: allows filtering spans by type.
    • Added support for span name column: improves query flexibility and performance.
    • Optimized span queries: added indexes to frequently queried columns.
    • Improved ingestion stability: fixed batch ingestion when root spans are present.
  • Improved developer experience by unifying our API schema and client libraries across the GenAI & Ml
  • Engines as well as the Arthur platform.
  • ML engine is run as non-root user.
  • Pushed ML Engine Artifacts to Nexus.