Weights & Biases

What Weights & Biases does

• W&B logs every run. Metrics, hyperparameters, gradients, system stats, and artifacts all reach the dashboard with a few lines of code.
• The model registry stores versioned artifacts. Promotion stages move a model from staging to production.
• Sweeps automate hyperparameter search. You write a config; W&B runs grid, random, or Bayesian search across your hardware.
• Reports turn dashboards into shareable documents. Engineers, managers, and stakeholders all read the same numbers.
• Weave extends the platform to LLM applications. It logs prompts, model calls, and evaluations across an LLM pipeline.

When to use Weights & Biases

• A research team compares a hundred training runs in one view and picks the best hyperparameter combination.
• ML engineers share results with non-technical stakeholders through W&B Reports without screenshots.
• Compliance auditors trace which data and which code produced the model in production.

Weights & Biases pricing

Weights & Biases is offered as a freemium product. Plans and exact prices change often — check the official Weights & Biases site for current tiers and limits.

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