A agentindex
Comparison

Helicone vs Weights and Biases Weave

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

Helicone

Proxy-based LLM observability with instant cost tracking.

  • + Fastest setup via a drop-in proxy
  • + Automatic cost and rate-limit tracking
  • − Eval features lighter than competitors
  • − Proxy model adds a hop

Weights and Biases Weave

LLM tracing and eval inside W&B.

  • + Integrates with existing W&B experiment tracking
  • + Good for ML teams already on W&B
  • − Most useful only if you already use W&B
  • − Proprietary
Spec Helicone Weights and Biases Weave
Role Observability Observability
Tags observability, llm-gateway, persona-platform-engineer observability, evaluation, persona-data-scientist, persona-platform-engineer
License Apache-2.0 Proprietary
Open source Yes No
Self-hostable Yes No
MCP support No No
Pricing freemium freemium
Price Free tier Free tier
Usage cost No model cost No model cost
Models multi multi
Languages typescript python, typescript
GitHub stars 5.9k —
Last activity 2026-06-11 —