What is Weights & Biases?
Weights & Biases tracks ML experiments, models and datasets, and its Weave product traces and evaluates LLM applications. It's widely used by ML research teams.
Best for: ML engineers, Research teams.
Key features
- Experiment tracking
- Weave LLM tracing
- Model registry
- Sweeps
- Reports
Pros and cons
Pros
- Industry standard for ML experiments
- Rich visualisations
Cons
- Pricing can be high for teams
- Broad product can be complex
Weights & Biases pricing
| Pricing model | Free plan |
|---|---|
| Starting price | Free |
| Platforms | Web, API |
| Launched | 2017 |
Prices change often. Check the Weights & Biases website for current plans.
Our verdict
Weights & Biases scores 8.3/10 in our review. Its biggest strength: industry standard for ML experiments. The main drawback: pricing can be high for teams. If it isn't the right fit, OpenAI API is the closest alternative.
Frequently asked questions
What is Weights & Biases?
Weights & Biases tracks ML experiments, models and datasets, and its Weave product traces and evaluates LLM applications. It's widely used by ML research teams.
Is Weights & Biases free?
Weights & Biases has a free plan with limits.
What are the best Weights & Biases alternatives?
Popular alternatives include OpenAI API, Anthropic API, Google Gemini API, Hugging Face.
Who is Weights & Biases best for?
Weights & Biases is best for ml engineers, research teams.