Weights and Biases

Weights & Biases (W&B) is an AI developer platform for building, evaluating, and monitoring machine-learning models and agentic applications. Teams use W&B to track experiments, version datasets and models, optimize runs, run rigorous LLM evaluations, trace/debug agents, add guardrails, and monitor systems in production.

Founded in 2017 by Lukas Biewald, Chris Van Pelt, and Shawn Lewis, W&B grew from experiment tracking into an end-to-end MLOps/LLMOps platform used by leading labs and enterprises. In May 2025, W&B was acquired by CoreWeave and continues its mission to build the best tools for AI developers.

1 AI Tool by Weights and Biases

Weights & Biases tool icon
Performance Metrics

End-to-end MLOps platform for tracking experiments, managing datasets, and optimizing machine learning and LLM workflows

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Weights and Biases AI Topics

Weights and Biases focuses on these topics: Performance Metrics (1 tool), UX Design (1 tool) and Automated Testing (1 tool).