These tools competes with

HeliconevsLangfuse

LLM observability, cost tracking, request logging versus OSS LLM engineering platform (acquired by ClickHouse, Jan 2026)

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Choose Helicone when…

  • •You want one-line LLM observability setup
  • •Caching LLM responses to cut costs matters
  • •You're an early-stage startup optimizing quickly

Choose Langfuse when…

  • •You want open-source LLM observability
  • •Self-hosting your tracing stack is important
  • •You need cost tracking across models and users

Side-by-side comparison

Field
Helicone
Langfuse
Category
Observability
Observability
Type
Open Source
Open Source
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Pro: Usage-based
Cloud: $59/mo
GitHub Stars
⭐ 2,500
⭐ 7,000
Health
●95 — Active
●95 — Active

Helicone

Open-source LLM observability platform. One-line integration to log every LLM request, track costs, and debug slow or failing calls.

Website ↗GitHub ↗

Langfuse

Open-source platform for tracing, evaluations, and prompt management. Self-hostable alternative to LangSmith with broad framework support. Acquired by ClickHouse in January 2026; OSS core continues with deeper ClickHouse-backed analytics.

Website ↗GitHub ↗

Shared Connections6 tools both integrate with

LiteLLMLangSmithArize PhoenixOpenAI APITraceloopLogfire

Only Helicone (2)

LangfuseAnthropic API

Only Langfuse (25)

Claude CodeCrewAICursorLangGraphLangChainOpenHandsAutoGenLlamaIndexDifyMastra

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