Weights & Biases
Tracks machine learning experiments, manages models and datasets, and monitors AI applications in production.
≈ 21.2kvisits/mo
Widely used · estimate, read 2026-09-19
- For
- AI developers and teams building, training, and deploying AI models and agents
- Price
- Free plan · From $60/mopricing page, read 2026-09-20
- Activity
- Maintainednothing dated on the site
- Company
- founding year not on record
- Runs as
- API
- track and visualize machine learning experiments
- fine-tune large language models without managing GPUs
- build and monitor agentic AI applications
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What is Weights & Biases?
Tracks machine learning experiments, manages models and datasets, and monitors AI applications in production.
Who is Weights & Biases for?
AI developers and teams building, training, and deploying AI models and agents
How much does Weights & Biases cost?
Weights & Biases has a free plan; paid plans start at $60/mo, per its pricing page on 2026-09-20.
Do people use Weights & Biases?
Widely used: ≈ 21.2k visits a month · estimate, 2026-09.
Is Weights & Biases still maintained?
Maintained.
What are alternatives to Weights & Biases?
In Developer tools, by use: True Watch, OpenObserve, Motadata, MentionDrop, Osuite, Prismix.
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one row at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.