Braintrust
Observability & evalsA commercial platform for evaluating, logging, and iterating on AI products.
Braintrust is an evaluation-first platform: it makes running and comparing evals a core workflow, with logging and a prompt playground around it, so changes to a model or prompt can be judged against data rather than vibes.
It is a hosted, commercial product aimed at teams building AI products who want a rigorous iteration loop.
Where it's ideally used
A fit for product teams who want disciplined, data-driven evaluation as the centre of their iteration loop.
Where it doesn't fit
Hosted and commercial — and more process than a small experiment needs.