R.I.P.

Open-source alternatives to Braintrust

5 projects replace Braintrust, the AI evaluation platform. 5 shipped code in the last 30 days.

5 open-source alternatives

Most-starred first. Stars, growth and activity are live from GitHub.

LangfuseMost adopted

Open source LLM engineering platform for AI-powered applications

Custom licenseupdated today

Arize PhoenixGrowing fastest

Open-source LLM tracing & evaluation for AI optimization

Custom licenseupdated today

LangWatch#3 by stars

Simulation-based testing and evaluation for AI agents

Apache-2.0updated today

Latitude#4 by stars

Full observability for AI agents in production

MITupdated today

Laminar#5 by stars

AI-powered platform for engineering LLM products

Apache-2.0updated today