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MLflow vs Weights & Biases: catalog facts
MLflow	Weights & Biases
Free Free and open source.	Freemium Offers free use with paid plans for teams.
Web, Self-hosted, Command line	Web
Tracing built on OpenTelemetry, independent of LLM provider 50+ built-in evaluation metrics and LLM judges	Experiment tracking and comparison in one dashboard Covers both classic ML training and LLM tracing
Broad feature set takes time to learn Running it for a team means hosting and maintaining a server yourself	Requires an account and sends data to a hosted service Proprietary platform
Downloadable app, Self-hosted	Hosted service
Open source	Closed source
License: Apache-2.0	License not stated
No account needed	Account 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.