Weights & Biases Freemium
Experiment tracking, evaluation and LLM observability
What is Weights & Biases?
Weights & Biases tracks training runs and model versions, and its Weave toolkit traces and evaluates LLM applications. It was acquired by CoreWeave in 2025 and remains the standard for ML experiment tracking.
Pros
- Best-in-class experiment tracking
- Weave for LLM evals and traces
- Free for personal projects
Cons
- Team plans are pricey
- Heavy for small LLM apps
Weights & Biases pricing
Free plan, paid from $50/mo. Prices change often, so confirm on the official pricing page.
Best Weights & Biases alternatives
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Compare Weights & Biases
Verdict
Weights & Biases scores 8.0/10 in our llm apis & developer platforms ranking. It is a solid choice, though the alternatives above are worth a look.
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