# Weights & Biases

> Weights & Biases is the leading MLOps platform for experiment tracking and ML model development.

Source: https://metavert.io/weights-and-biases  
Published: 2026-03-16  
Updated: 2026-03-16

Agentic Economy

[View Market Map](https://metavert.io/agentic-market-map)

Layer 5: Knowledge & Substrate as W&B

**Weights & Biases (W&B)** is the leading MLOps platform for tracking, visualizing, and managing machine learning experiments. W&B provides tools for experiment tracking, dataset versioning, model evaluation, hyperparameter optimization, and collaborative AI development.

W&B has become a near-universal tool in AI research and development: most major AI labs and companies use it to track their training runs, compare model performance, and collaborate on model development. The platform's experiment tracking captures every detail of a training run — hyperparameters, metrics, system utilization, model artifacts — making AI development reproducible and systematic.

In the model-building toolchain layer, W&B is essential infrastructure for the iterative process of developing the foundation models that power AI agents — providing the observability and management layer for the model training pipeline.

## Related Topics

[PyTorch](https://metavert.io/pytorch) · [JAX](https://metavert.io/jax) · [AI Model Training](https://metavert.io/ai-model-training)

## Further Reading

[Weights & Biases](https://wandb.ai)