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Braintrust vs MLflow: catalog facts
Braintrust	MLflow
Freemium Self-serve sign-up with paid plans listed on the pricing page.	Free Free and open source.
Web	Web, Self-hosted, Command line
Real-time tracing of prompts, responses and tool calls Evals scored by LLMs, code or humans	Tracing built on OpenTelemetry, independent of LLM provider 50+ built-in evaluation metrics and LLM judges
Hosted service that requires an account Aimed at teams building LLM products, not individual users	Broad feature set takes time to learn Running it for a team means hosting and maintaining a server yourself
Hosted service	Downloadable app, Self-hosted
Closed source	Open source
License not stated	License: Apache-2.0
Account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.