Weights and Biases is the AI developer platform providing experiment tracking, model monitoring, and ML workflow orchestration that has become the industry standard for machine learning teams. The core platform enables teams to track experiments with automatic logging of hyperparameters, metrics, and artifacts, visualize training runs with interactive dashboards, and compare model performance across experiments to identify the best configurations for production deployment.
Weave extends the W&B ecosystem with LLM operations capabilities for prompt engineering, evaluation, and deployment of language model applications. It provides trace logging for LLM applications, structured evaluation frameworks, and deployment pipelines specifically designed for the unique requirements of generative AI systems. This combination of traditional ML experiment tracking with modern LLM ops creates a unified platform for teams working across the full spectrum of AI development.
The current plan model starts with a Free personal tier, then moves to Pro for professionals and small teams starting at $60/month billed monthly, with Enterprise reserved for security, compliance, and custom-scale requirements. Public pricing lists 5 GB/mo storage on Free and 100 GB/mo on Pro, while hosting docs distinguish Multi-tenant Cloud, Dedicated Cloud, and Self-Managed deployment paths. Dataset management, model registry, and production monitoring round out the platform capabilities for teams that need reproducible experiments and reliable model deployment.
