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235 tools · 33 stacks

AI tools are all over the place. This is the full landscape — 247 tools across 21 categories, mapped and connected. Ready to narrow it down? Build your stack →

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These tools competes with
Langfuse
vs
Arize Phoenix

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 Arize Phoenix when…

  • •You need ML observability beyond just LLMs
  • •RAG pipeline tracing and eval integration is required
  • •You're running experiments and need a notebook-friendly tool
Field
Langfuse
Arize Phoenix
Category
Observability
Observability
Type
OSS
OSS
Free Tier
✓ Yes
✓ Yes
Plans
Cloud: $59/mo
Enterprise: Custom
Stars
⭐ 7,000
⭐ 4,000
Health
●95 — Active
●90 — Active
Trajectory
— not enough data
— not enough data
Synced
today
today

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.

Arize Phoenix

Open-source observability platform for ML and LLM applications. Supports tracing, evaluation, and dataset management with a strong eval framework.

Langfuse Website ↗GitHub ↗
Arize Phoenix Website ↗GitHub ↗

Shared Connections (2)

HeliconeLangWatch

Only Langfuse (27)

CursorCrewAIAutoGenLangGraphLangChainLlamaIndexDifyMastra

Only Arize Phoenix (1)

Langfuse
See full comparison in Explore →