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Opik vs Weights & Biases: catalog facts
Opik	Weights & Biases
Free The open-source platform is free to self-host.	Freemium Offers free use with paid plans for teams.
Web, Self-hosted	Web
Tracing, automated evaluations and dashboards together Covers RAG systems and agent workflows	Experiment tracking and comparison in one dashboard Covers both classic ML training and LLM tracing
Self-hosting means running several services yourself Contributors must sign a CLA	Requires an account and sends data to a hosted service Proprietary platform
Self-hosted	Hosted service
Open source	Closed source
License not stated	License not stated
Not stated if an account is 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.