Hosted Service
Observability & Evaluation
Braintrust
1Evaluate, 2log, 3and 4improve 5AI 6products.
the six Ws · specification
W1
Who
By Braintrust.
W2
What
A platform for evals, prompt experimentation, and production logging.
W3
Where
A hosted SaaS with SDKs.
W4
When
When iterating on prompts and measuring quality.
W5
Why
Makes AI quality measurable and comparable.
W6
With
An API key and outbound HTTPS.
W7
Watch
Commercial SaaS, API key required; logs and eval data are sent to Braintrust.
alternatives
EvaluationLoggingExperiments