A agentindex
Comparison

Helicone vs SigNoz

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

SigNoz

Open-source OpenTelemetry observability.

  • + Unified app and LLM tracing on OTel
  • + Fully self-hosted, no vendor lock-in
  • − LLM evals via OpenLLMetry, not native
  • − More ops to run than a SaaS
Spec Helicone SigNoz
Role Observability Observability
Tags observability, llm-gateway, persona-platform-engineer observability, persona-platform-engineer
License Apache-2.0 MIT
Open source Yes Yes
Self-hostable Yes Yes
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 go, typescript
GitHub stars 5.9k 27.6k
Last activity 2026-06-11 2026-07-03