W&B Inference service comes free with your account. Get access to open source models through the API and Weave Playground.
W&B Weave helps you build better language model apps. Use Weave to track, test, and improve your apps:
  • Track & Watch: See how your language model calls work in live systems.
  • Test Changes: Try new prompts, data, and models safely.
  • Run Tests: Test models and prompts in the Playground.
  • Check Performance: Use tools to see how well your app works.
  • Add Safety: Protect your app with content filters and prompt guards.
Connect Weave to your code with: Weave works with many language model providers, local models, and tools.

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Get started

New to Weave? Start with the Python quickstart or TypeScript quickstart.

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Advanced guides

Explore advanced topics:
  • Integrations: Connect Weave with popular language model providers.
  • Cookbooks: Build with Weave using Python and TypeScript. Try interactive notebooks.
  • W&B AI Academy: Build advanced retrieval systems, improve language model prompting, and fine-tune models.