A agentindex
Comparison

Comet Opik vs SigNoz

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

Comet Opik

Open-source eval and tracing from Comet.

  • + Open source with self-host option
  • + Backed by Comet's MLOps experience
  • − Smaller community than Langfuse
  • − UI less polished than paid rivals

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 Comet Opik SigNoz
Role Observability Observability
Tags observability, evaluation, persona-data-scientist, 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 python, typescript go, typescript
GitHub stars 20.3k 27.6k
Last activity 2026-07-03 2026-07-03