Start building for free

Our mission is to enable developers to build high quality, reliable AI products. Builders can get started with Braintrust for free. We provide the full platform for free to academic and non-commercial open-source projects.


$0 / month
  • 1000 private eval rows/week
  • Unlimited public experiments
  • Unlimited access to AI proxy
  • Up to 5 users
  • Discord community


Let's chat
  • Unlimited private experiments
  • On-prem / private VPC
  • Golden datasets
  • Prompt playground
  • Private slack channel

Open source and .edu

$0 / month
  • Everything in Builder
  • Unlimited private experiments
  • Unlimited users
Sign up with a .edu email address or contact us about an open source project for free access.

Ship AI with confidence