ModelRefs / Braintrust — AI Glossary
Braintrust — AI Glossary
An LLM evaluation and observability platform with experiment tracking, online scoring, and prompt management. Integrates with OpenAI, Anthropic, and LiteLLM.
Overview
Braintrust provides: experiment tracking (run evaluations, compare prompts/models), online scoring (evaluate production traffic with LLM judges), prompt playground, and dataset management. Integrates with OpenAI, Anthropic, and LiteLLM. Positioned as a developer-first alternative to LangSmith with a simpler API.
Reference details
| Topic | infrastructure |
|---|---|
| Last reviewed | 2026-06-24 |
Related terms
Commonly confused with
Sits in the same category as Langfuse, Phoenix and LangSmith, with its centre of gravity on evaluation rather than tracing — experiments, scoring and dataset iteration, with observability alongside. The practical question when choosing among these is not which has more features but which owns your evaluation datasets, since those are the asset that becomes expensive to move later.
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Frequently asked questions
What is Braintrust?
An LLM evaluation and observability platform with experiment tracking, online scoring, and prompt management.
What concepts are related to Braintrust?
Closely related concepts include langsmith, langfuse, experiment tracking.