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
Category	eval-observability	eval-observability
License	Apache-2.0	MIT
Open source	Yes	Yes
Self-hostable	Yes	Yes
MCP support	No	No
Pricing	freemium	freemium
Starting price	Free tier	Self-host free
Models	multi	multi
Languages	typescript	go, typescript
GitHub stars	5.9k	27.5k
Last activity	2026-06-11	2026-06-25