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Opik vs MLflow: catalog facts
Opik	MLflow
Free The open-source platform is free to self-host.	Free Free and open source.
Web, Self-hosted	Web, Self-hosted, Command line
Tracing, automated evaluations and dashboards together Covers RAG systems and agent workflows	Tracing built on OpenTelemetry, independent of LLM provider 50+ built-in evaluation metrics and LLM judges
Self-hosting means running several services yourself Contributors must sign a CLA	Broad feature set takes time to learn Running it for a team means hosting and maintaining a server yourself
Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	No 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.