Helicone vs Weights & Biases

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

	Helicone Evaluation	Weights & Biases Evaluation
Tagline	Open-source LLM observability — one-line proxy install.	The ML experiment tracker, now with LLM eval features.
Category	Evaluation	Evaluation
Pricing	Freemium· Free 100k requests/mo; from $25/mo	Freemium· Free personal; team from $50/mo
Model	—	—
Editorial score	8.3 / 10	8.4 / 10
Use cases	observabilitycost trackingopen source	ML experimentsLLM evalWeave
Pros	One-line install Open source Generous free tier	Industry-standard for ML tracking Weave adds LLM-native eval Mature, reliable
Cons	Eval features less deep than Braintrust Proxy adds a hop	Heavier UX than LLM-native tools LLM features still catching up
Website	www.helicone.ai	wandb.ai

Pick Helicone if

Pick Weights & Biases if