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MLflow vs Langfuse: catalog facts
MLflow	Langfuse
Free Free and open source.	Freemium Open source for self-hosting, with a hosted version that can be started for free.
Web, Self-hosted, Command line	Web, Self-hosted
Tracing built on OpenTelemetry, independent of LLM provider 50+ built-in evaluation metrics and LLM judges	Tracing, prompt management and evaluation in one tool Can be self-hosted or used as a hosted service
Broad feature set takes time to learn Running it for a team means hosting and maintaining a server yourself	Requires instrumenting your application with its SDK Self-hosting means running and maintaining the server yourself
Downloadable app, Self-hosted	Self-hosted, Hosted service
Open source	Open source
License: Apache-2.0	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

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