These tools competes with
LangfusevsOpik
OSS LLM engineering platform versus Open-source LLM tracing and evaluation platform by Comet
Compare interactively in Explore →Choose Langfuse when…
- •You want open-source LLM observability
- •Self-hosting your tracing stack is important
- •You need cost tracking across models and users
Choose Opik when…
- •want OSS observability with built-in eval metrics
- •already using Comet for ML experiment tracking
- •need hallucination detection out of the box
Side-by-side comparison
Field
Langfuse
Opik
Category
LLM Infrastructure
observability
Type
Open Source
Open Source
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Cloud: $59/mo
OSS: FreeCloud: Free tier + pay as you go
GitHub Stars
⭐ 7,000
⭐ 4,200
Health
●80 — Active
●85 — Active
Langfuse
Open-source platform for tracing, evaluations, and prompt management. Self-hostable alternative to LangSmith with clean UX.
Opik
Opik is an open-source LLM observability platform from Comet that provides detailed tracing, prompt tracking, and automated evaluation for AI applications. One-line integration captures every LLM call, cost, and output with built-in eval metrics including hallucination detection.
Only Langfuse (30)
Claude CodeCrewAILangGraphLangChainCursorLlamaIndexOpenHandsDifyMastraAutoGen
Only Opik (2)
LangfuseMaxim AI
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