Braintrust vs LangSmith

Pick two tools from the same category to compare side-by-side.

	Braintrust Eval and observability platform purpose-built for LLM applications.	LangSmith Eval, tracing, and prompt management from the LangChain team.
Category	eval	eval
Vendor type	commercial	commercial
Pricing	freemium	freemium
Strengths	+ Polished experiment + eval UI + Strong CI/CD integration + Combines eval + observability	+ End-to-end coverage (trace, eval, prompt) + Native LangChain/LangGraph integration
Tradeoffs	− Commercial; some teams prefer open-source alternatives	− Most natural for LangChain-stack teams
Used in stacks	9	2