Braintrust
Starter plan ($0): $10 model credits, 1 GB processed data and 10k scores for AI evals and tracing.
Dev Tools
What you get
AI evals, tracing and playgrounds with unlimited users and projects, $10 in model credits, 1 GB processed data and 10k scores.
How to get it
Sign up on braintrust.dev/pricing.
What it requires
No credit card required.
The catch
Data is kept 14 days; extra processed data is $4/GB and extra scores $2.50 per 1k.
From the official page · checked Oct 22, 2026