This month’s product update moves Arthur closer to a world where building reliable AI is simple, predictable, and accessible to every team. November brings refinements that ensures smoother setup for the open source Evals Engine, and gives a first hint at the agentic governance capabilities arriving in early 2026.
A Sneak Peek at Something Big Coming in January
We are preparing something special for builders who are exploring agentic architectures. A major set of agent focused features will arrive in January 2026. These updates will give you deeper visibility into agent behavior, richer controls for testing and validation, and smoother pathways from prototype to production. Consider this your early look at what is coming.
Interested in trying it first? Email product@arthur.ai to join the early access group.
Arthur Evals Engine OSS Updates
Our open source community continues to grow, and the Engine is now even more reliable. Here is what changed this month:
Enhancements
- The PII detection model has been upgraded and now identifies date and time patterns with higher accuracy.
- Docker configurations now use Postgres 15 to prevent initialization issues and improve compatibility during new installations.
Bug Fixes
- Fixed an issue where some metrics did not appear in the selection list for custom datasets.
- Increased ML engine aggregation timeout to better support segmentation on larger and more complex datasets.
For Venture Backed Startups Building with Agents
The Arthur Start Up Partner Program is gaining momentum. This program is built for founders who need to ship agentic applications that customers can trust. Join to receive platform credits, hands-on guidance, and support from our team. Apply today and start building with confidence.
Looking Ahead
November sets the stage for a major leap forward in January. New tools for agent reliability, richer evaluation workflows, and continued investments in the open source Engine are all underway. Thank you for building with Arthur.
See the full platform release notes for November 2025 here.
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