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Aim vs Weights & Biases: catalog facts
Aim	Weights & Biases
Free Free and open source under Apache-2.0; enterprise support is available from AimStack.	Freemium Offers free use with paid plans for teams.
Self-hosted, Command line	Web
Self-hosted, so experiment data stays with you Handles tens of thousands of runs	Experiment tracking and comparison in one dashboard Covers both classic ML training and LLM tracing
You run and maintain it yourself Focused on tracking, not full MLOps	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
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 26, 2026

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