Weights & Biases
Weights & Biases, developer tools for machine learning
Overview
What is Weights & Biases?
Weights & Biases is the leading AI developer platform to train and fine-tune models, manage models from experimentation to production, and track and evaluate GenAI applications powered by LLMs. W&B Prompts is a suite of LLMops tools to dramatically improve prompt engineering workflows and unlock deeper understanding of your LLMs. W&B Weave helps build agentic AI applications.
What is Weights & Biases used for?

Top Features
- MLOps and LLMOps platform
- Experiment tracking and visualization
- Hyperparameter optimization (Sweeps)
- Model and dataset registry
- Artifact versioning and management
- Reporting and visualization
- SDK for logging experiments and artifacts
- Automated workflows
- AI application debugging and evaluation
- Prompt engineering tools
How to use Weights & Biases?
Use W&B to track ML experiments, build AI models, and build agentic AI applications. Integrate with Langchain, LlamaIndex, PyTorch, HF Transformers, Lightning, TensorFlow, Keras, Scikit-LEARN, and XGBoost with one line of code.
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Pros & Cons
No Data
Use Cases
- Train and fine-tune LLMs
- Computer Vision
- Time Series analysis
- Recommender Systems
- Classification & Regression
- Build AI agents and applications
Weights & Biases Pricing
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