6 Best Open Source Braintrust Alternatives
A curated collection of the 6 best open source and self-hosted alternatives to Braintrust in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Braintrust in 2026? The top open-source alternative is Langfuse — Langfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications..
Other highly rated open-source Braintrust alternatives include Arize Phoenix, Latitude and Agenta.
Langfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.
Langfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.
Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.
Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.
Open-source platform for monitoring AI agents: captures traces, surfaces failure patterns, alerts on issues, and helps you verify fixes with automated evals.
Open-source platform for monitoring AI agents: captures traces, surfaces failure patterns, alerts on issues, and helps you verify fixes with automated evals.
Open-source LLMOps platform providing prompt management, evaluation, and observability tools for building robust AI applications with team collaboration.
Open-source LLMOps platform providing prompt management, evaluation, and observability tools for building robust AI applications with team collaboration.
Laminar is an open-source platform that helps collect, understand, and utilize data for building high-quality LLM applications.
Laminar is an open-source platform that helps collect, understand, and utilize data for building high-quality LLM applications.
Tests AI agents through multi-turn simulations, LLM-based scoring, and production tracing so teams can ship reliable agents with confidence.
Tests AI agents through multi-turn simulations, LLM-based scoring, and production tracing so teams can ship reliable agents with confidence.
About Braintrust
CI/CD-style evaluation platform for AI applications that lets teams run evals, track prompt and model performance over time, log production traces, and manage datasets from a single dashboard.