Braintrust vs promptfoo

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

	Braintrust Eval and observability platform purpose-built for LLM applications.	promptfoo Open-source CLI for prompt and LLM eval, including red-teaming.
Category	eval	eval
Vendor type	commercial	open source
Pricing	freemium	free
Strengths	+ Polished experiment + eval UI + Strong CI/CD integration + Combines eval + observability	+ Open source, CLI-first + Strong red-team / security eval modules + Easy to wire into CI
Tradeoffs	− Commercial; some teams prefer open-source alternatives	− Less polished UI than commercial alternatives
Used in stacks	9	3