Get Started with Weights & Biases

Weights & Biases tracks, visualizes, and compares your machine learning experiments. It includes W&B Weave, which traces and evaluates LLM applications. Choose the quickstart that matches what you’re building.

If you’re	Start with	Key features
Training or fine-tuning ML models	Track ML experiments	Experiment tracking, hyperparameter optimization, artifacts, visualizations
Tracing and evaluating existing models and applications	Trace LLM applications	Tracing, prompt management, evaluation, cost tracking for production AI apps

Track ML experiments

W&B Quickstart

The “hello world” of W&B, which guides you to logging your first data.

Get started with experiments

A full-fledged tutorial that walks through experiment tracking, Registry, and reports using a real ML experiment.

W&B 101 Course

A video-led course that emphasizes experiment tracking and features quizzes to ensure comprehension.

YouTube Tutorials

Learn how to use W&B to track experiments, manage artifacts, and optimize models through hands-on tutorials.

Trace LLM applications

Weave Quickstart

Learn how to decorate your code so that calling into an LLM logs Weave traces and sets you on the path of a perfect LLM workflow.

Learn Weave with Serverless Inference

A full-fledged tutorial that shows Weave doing real-world evaluation of the performance of various models hosted by Serverless Inference

YouTube Playlist

Learn how to use Weave to trace, evaluate, and debug LLM applications and how to use Weave to build production-ready LLM applications.

Last modified on September 30, 2026

​Track ML experiments