Block regressions before every deploy.
Write evals, run them in CI, and know exactly what regressed and what improved.
Free to start · No credit card · 5-min setup
Works with your stack. 50+ integrations, including:
Run evals in your existing workflow.
Run evals from code, CLI, or UI. Catch regressions before every merge.
Code, CLI, or UI. Your call
Define your test suite in code, run from terminal, or build directly in the UI. Every run logs automatically and scores compare against your baseline.
Iterate fast without touching code
Adjust prompts, swap models, and rerun your dataset in seconds. Iterations stay linked to experiments so you can see exactly what improved.
Real results from real teams.
<24hrs
To deploy a new frontier model
<10 min
Eval turnaround
50% → 90%+
Accuracy improvement
45x
More feedback
Notion, Dropbox, Zapier, and Coursera use Braintrust to ship better AI.
AI testing that doesn't compromise.
Scale evals to thousands of cases
Write one eval function and run it against thousands of test cases in parallel. Braintrust handles scheduling, storage, and comparison against every previous run.
Regression testing in CI
Every PR runs your full eval suite. Scores are compared against the baseline automatically. Merges block when quality drops.
Test cases from real failures
When something breaks in production, add it to a dataset and it becomes a test case. Your eval suite grows from actual bugs.
Customer spotlight
“Braintrust helped us identify several patterns that we wouldn't have found otherwise.”
Luis Héctor Chávez, CTO at Replit
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