Evaluation and observability platform for building reliable AI products.
Braintrust is an end-to-end platform for evaluating, monitoring, and iterating on LLM applications, offering evals, datasets, prompt playgrounds, logging, and online scoring. It targets teams shipping AI features to production, with a free tier and usage-based paid plans.
Starter is free (1 GB processed data, 10K scores, unlimited users); Pro is $249/month; Enterprise custom.
price from, pricing details · as of 2026-11-03