📖 The AI Tool Bible

Helicone vs Weights & Biases

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

 
Helicone
Evaluation
Weights & Biases
Evaluation
TaglineOpen-source LLM observability — one-line proxy install.The ML experiment tracker, now with LLM eval features.
CategoryEvaluationEvaluation
PricingFreemium· Free 100k req/mo; Pro from $25/moFreemium· Free personal; team from $50/mo per seat
ModelPlatform (any LLM)Platform (any LLM)
Editorial score8.3 / 108.4 / 10
Use cases
observabilitycost trackingopen source
ML experimentsLLM evalWeave
Pros
  • One-line install
  • Open source
  • Generous free tier
  • Cost tracking is genuinely useful
  • Industry-standard for ML tracking
  • Weave adds LLM-native eval
  • Mature, reliable
  • Strong enterprise features
Cons
  • Eval features less deep than Braintrust
  • Proxy adds a hop
  • Heavier UX than LLM-native tools
  • LLM features still catching up
Websitewww.helicone.aiwandb.ai
Pick Helicone if
  • ✅ One-line install
  • ✅ Open source
  • ✅ Generous free tier
  • ✅ Cost tracking is genuinely useful
Pick Weights & Biases if
  • ✅ Industry-standard for ML tracking
  • ✅ Weave adds LLM-native eval
  • ✅ Mature, reliable
  • ✅ Strong enterprise features
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