Changelog

March 21, 2026

Branching Out

TGIF! Thank god it’s features, here’s what we shipped this week:

Buckle up—this is a big one. Prompt Branches bring proper version-control workflows to your prompts: branch, iterate, and merge without touching production. Custom Dashboards let you build your own Observatory views from scratch. Plus: OpenRouter and TrueFoundry are now available in Arena and Experiments, OpenInference tracing lands for Python and TypeScript, and enterprise auth gets a serious upgrade with HMAC & Auth0 support.

Changelog March 21, 2026

Added

  • Prompt Branches - Branch off your prompts, iterate safely, and merge back when you’re ready. Your prompt engineering, with the same version-control discipline as your code. A real branch upgrade.
  • Custom Dashboards - Build your own Observatory dashboards from scratch. Pick your metrics, arrange your panels, tell your data’s story. Your observatory, your _dash_board.
  • OpenRouter & TrueFoundry in Arena & Experiments - Two new model providers, one week. Access hundreds of models through OpenRouter or bring your fine-tuned TrueFoundry models—all available in Arena and Experiments. The route to more models just got shorter.
  • OpenInference Integration - Trace your LLM apps with OpenInference in both Python and TypeScript. Plug in, light up, see everything. Openly invited.
  • HMAC & Auth0 Support - Enterprise-grade authentication with HMAC signing and Auth0 SSO. Security that doesn’t slow you down. Consider this auth-orized.
  • New Thread Displayer - Threads get a brand-new visual treatment—cleaner, faster, and easier to follow multi-turn conversations. Threads have never been so well-threaded.
  • AI Connections for Quick Runs & Experiments - Connect your AI provider directly for Quick Runs, and fine-tune temperature, top-p, and more right from the Arena and Experiments panel. No config files, no detours. Quick on the draw.
  • Error Bars in Observatory - Metrics now show confidence intervals so you know how much to trust the numbers. Finally, some margin for error.
  • Progress Bars for Risk Assessments - Red teaming jobs now show real-time progress instead of a spinner. Watch the risk assessment unfold. Progress has been made.

Changed

  • Transformers & Categories out of Beta - Battle-tested and production-ready. No more beta disclaimers—officially official.
  • User Analytics Upgrades - Total cost per user in the table, User ID filter on the Threads page, and click-through from Users to Traces. Your users, accounted for.
  • New Pagination & Arrow Navigation - Smoother pagination across the platform and arrow-key navigation for Spans and Threads. Keyboard warriors, we’re turning the page for you.
  • Framework Deletion - You can now delete frameworks you no longer need. Sometimes you just need to let go.
  • General Stability & Performance Improvements - Bug fixes, reliability boosts, and the usual behind-the-scenes polish. The kind of changes you feel more than you see.