Weights & Biases

W&B Weave is the part of Weights & Biases aimed at building agentic AI applications, and it sits alongside the rest of a platform that covers the full life of a model.

Weights & Biases is an AI developer platform that lets you train and fine-tune models, manage them from experimentation through to production, and track and evaluate GenAI applications powered by large language models.

For teams working with LLMs, W&B Prompts adds a set of LLMops tools for prompt engineering workflows, with the goal of giving you a clearer view of how your models behave.

That makes Weights & Biases relevant to two groups: people still running training experiments, and people who have moved on to shipping LLM-based apps and agents and need to keep track of what those apps do.

The breadth is the main draw.

You can keep experiment tracking, model management and application evaluation in a single place instead of stitching together separate tools.

Weights & Biases is a developer product, so expect to work in code.