Helicone

Proxy-based LLM observability with instant cost tracking.

Visit site GitHub
Open source Self-hostable freemium
LicenseApache-2.0
Starting priceFree tier
Model supportmulti
Languagestypescript
GitHub stars5.9k
Last activity2026-06-11
VerifiedThu Jun 25 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Verified byseed

An observability proxy that gives you tracing, caching, and cost tracking with minimal code changes.

Strengths

  • Fastest setup via a drop-in proxy
  • Automatic cost and rate-limit tracking

Tradeoffs

  • Eval features lighter than competitors
  • Proxy model adds a hop