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The Weights & Biases Python SDK (wandb package) enables you to train and fine-tune models, and manage models from experimentation to production.
After performing your training and fine-tuning operations with this SDK, you can use the Public API to query and analyze the data that was logged, and the Reports and Workspaces API to generate a web-publishable report summarizing your work.

Installation and setup

Sign up and create an API key

To authenticate your machine with W&B, you must first generate an API key at User settings.

Install and import packages

Install the W&B library.

Import W&B Python SDK:

Last modified on November 6, 2026