Braintrust
Eval-first LLM platform that blocks bad prompts in CI
AI Agents / Memory & Evals · Freemium
What's Good
Braintrust is built around one loop: change a prompt, measure the result, ship the better one. The Eval() primitive runs experiments with real scorers—exact match, embedding similarity, LLM-as-judge factuality—and the CI integration blocks merges on statistically significant regressions.
The Catch
Eval-first means observability is secondary—if your primary loop is debugging traces, look elsewhere. Learning curve to build eval datasets that actually represent production.
Verdict
The platform for teams whose deployment loop is change-measure-ship.
Embed
[](https://stackgems.com/gems/braintrust)