See every AI call in production.
Trace every agent, score live traffic, and catch quality regressions before your users do.
Free to start · No credit card · 5-min setup
Works with your stack. 50+ integrations, including:
Observability built around your stack.
Trace what happens in production. Score it, alert on it, and fix it.
Trace every call in production
Every LLM call, tool invocation, and retrieval step logs as a span. Filter and search across any production request in seconds.
Score live traffic and catch regressions
Score live traffic with LLM-as-judge, code scorers, or humans. Set thresholds and get alerted before quality drops reach users.
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.
Observability and evals in one platform.
Production traces become evals
Make failing traces into eval datasets. Then run it as a regression test in CI.
Capture every span automatically
LLM calls, tool invocations, and retrieval steps are all captured as spans. Works with OpenAI, Anthropic, LangChain, OTel, and more. See your first trace in minutes.
Alerts before users notice
Score live traffic with LLM-as-judge, code, or humans. Set thresholds on quality, latency, or cost. Alerts go to tools of your choice, before users notice.
Customer spotlight
“We didn't realize we needed deep observability until Braintrust.”
Malte Ubl, CTO at Vercel
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See what your AI does in production
See your first trace in minutes
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