These tools integrates with

RAGASvsLangfuse

RAG pipeline evaluation framework versus OSS LLM engineering platform (acquired by ClickHouse, Jan 2026)

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Choose RAGAS when…

  • •You're evaluating a RAG pipeline specifically
  • •Context relevance and answer faithfulness are your key metrics
  • •You want an OSS eval framework focused on retrieval quality

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
RAGAS
Langfuse
Category
Prompt & Eval
Observability
Type
Open Source
Open Source
Free Tier
✓ Yes
✓ Yes
Pricing Plans
—
Cloud: $59/mo
GitHub Stars
⭐ 7,000
⭐ 7,000
Health
●70 — Active
●95 — Active

RAGAS

Evaluates retrieval-augmented generation pipelines on faithfulness, answer relevancy, context precision, and recall.

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 Connections3 tools both integrate with

LlamaIndexLangChainDeepEval

Only RAGAS (2)

LangfuseTruLens

Only Langfuse (28)

Claude CodeCrewAICursorLangGraphOpenHandsAutoGenDifyMastraAgnoLiteLLM

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See how RAGAS and Langfuse fit into the bigger picture — 235 tools, 543 relationships, all mapped.

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