These tools competes with
LangfusevsLangSmith
OSS LLM engineering platform (acquired by ClickHouse, Jan 2026) versus LLM tracing, evaluation, and dataset management
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 LangSmith when…
- •You're already in the LangChain ecosystem
- •You want end-to-end tracing for LangChain apps
- •Dataset management and evals are part of your workflow
Side-by-side comparison
Field
Langfuse
LangSmith
Category
Observability
Observability
Type
Open Source
Commercial
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Cloud: $59/mo
Plus: $39/mo
GitHub Stars
⭐ 7,000
—
Health
●95 — Active
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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.
LangSmith
LangChain's observability platform. Trace every LLM call, run evals on datasets, and manage prompts in production.
Shared Connections7 tools both integrate with
Only Langfuse (24)
Claude CodeCrewAIOpenHandsAutoGenLlamaIndexDifyMastraAgnoLiteLLMLangSmith
Only LangSmith (2)
PydanticAILangfuse
Explore the full AI landscape
See how Langfuse and LangSmith fit into the bigger picture — 235 tools, 543 relationships, all mapped.