What is Weights & Biases?
W&B helps AI researchers track experiments, visualize model performance, and collaborate on building better neural networks.
About
Weights & Biases is a platform for tracking, evaluating and sharing machine learning and AI application work. Teams log training experiments, compare runs, version models and datasets, and use Weave to trace and score LLM applications in development and production. The product is now sold by CoreWeave under the CoreWeave Forge name after CoreWeave acquired it, and wandb.ai redirects to the CoreWeave site. A free plan supports personal projects with limited storage and seats. The Pro plan starts at $60 per month billed monthly, and includes a 30-day free trial; Enterprise adds security features and custom pricing, and academic researchers can apply for free access.
Key facts
- Platforms
- web and api
- Pricing
- $60 / month
- Free plan
- Yes
- Free trial
- Yes
- Category
- Coding
- Website
- https://wandb.ai/
- Listing updated
- Nov 11, 2026
Facts checked on Oct 30, 2026
Features
- Experiment tracking for machine learning training runs
- Model and dataset versioning with lineage
- Tracing and evaluation of LLM applications (Weave)
- Collaborative dashboards and reports
- CI/CD automations and alerts
- Free academic license
Weights & Biases FAQ
What is Weights & Biases?
W&B helps AI researchers track experiments, visualize model performance, and collaborate on building better neural networks.
Is Weights & Biases free?
Yes. Weights & Biases has a free plan and a free trial. Price: $60 / month.
What platforms does Weights & Biases support?
Weights & Biases supports web and api.
What are alternatives to Weights & Biases?
Coding alternatives to Weights & Biases include GitHub Copilot, Together AI, Baseten, Straion, Cursor and Pinecone.