Prompts
W&B Models, from Weights & Biases, helps you train, fine-tune, govern, and manage AI models from experimentation to production. You can run more experiments, analyze them interactively, and quickly build higher-quality models. Use the W&B Registry to centralize the tracking of models, datasets, metadata, and their lineage to support governance, and reproducibility. Also, automate workflows for training, evaluation, and deployment to enable rapid iteration.
| What is it | W&B Models, from Weights & Biases, helps you train, fine-tune, govern, and manage AI models from experimentation to production. You can run more experiments, analyze them interactively, and quickly build higher-quality models. Use the W&B Registry to centralize the tracking of models, datasets, metadata, and their lineage to support governance, and reproducibility. Also, automate workflows for training, evaluation, and deployment to enable rapid iteration. |
|---|---|
| Pricing | Freemium — from $60/mo |
| Free tier | Yes |
| Platform | Web Application |
| API | Yes |
| Best for | tracking machine learning experiments, versioning and managing AI models |
| Domain registered | 2017 |
Data updated Aug. 1, 2026
What does Prompts do?
Weights & Biases (W&B) is a comprehensive platform that helps AI developers and teams build, manage, and deploy machine learning models. It provides tools for tracking experiments, versioning models and datasets, monitoring training runs, and evaluating AI agent performance. The platform covers the entire ML lifecycle from development to production deployment.
The platform stands out with its specific components: W&B Models for training tracking, W&B Weave for building agentic AI applications, W&B Training for serverless reinforcement learning, and W&B Registry for versioning datasets, models, and prompts. It offers detailed logging capabilities, experiment comparison tools, and integrates with popular cloud platforms like AWS, Google Cloud, and Azure.
This platform primarily benefits AI researchers, machine learning engineers, and data science teams working on complex ML projects. It's particularly valuable for teams at companies like Salesforce, Samsung, Microsoft, and Toyota (all mentioned as customers) who need to collaborate on model development, maintain reproducibility, and ensure model performance across different environments.
Key features
What makes it stand outWho is Prompts for?
Who benefits most from this toolPricing
Free tier available — start without a credit cardFree
- 5 storage GB
- 5 model seats
- 1 weave data ingestion GB
- AI application evaluations
- AI application tracing
- AI application scorers
- AI model experiment tracking
- AI assets registry & lineage tracking
- Community Support
Pro
Everything in Free, plus:
- 100 storage GB
- 10 model seats
- 500 tracked hours
- 0.03 additional storage rate
- 1.5 weave data ingestion GB
- 1 additional tracked hours rate
- 0.1 additional data ingestion rate
- CI/CD automations
- Slack and email alerts
- Unlimited teams for collaboration
- Team-based access controls
- Service Accounts
- Priority email & chat support
Enterprise
Everything in Pro, plus:
- Customizable storage GB
- Customizable model seats
- Customizable weave data ingestion GB
- Single tenant option with choice of region
- HIPAA compliant option
- Secure private connectivity
- Customer-managed encryption key
- Single Sign On
- Automated user provisioning
- Custom roles
- Audit logs
- Enterprise support package
Trust & presence
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