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123 tools · 10 stacks
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AI tools are all over the place. This is the full landscape — 123 tools across 12 categories, mapped and connected. Ready to narrow it down? Build your stack →

Stack Layers
What are you building and how is it defined?
How do you write and ship code?
How does your AI think and act?
Which models and infrastructure power it?
How do you build, observe, and extend it?
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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
LLM Infrastructure
LLM Infrastructure
Type
OSS
OSS
Free Tier
✓ Yes
✓ Yes
Plans
Cloud: $59/mo
Enterprise: Custom
Stars
⭐ 7,000
⭐ 4,000

Langfuse

Open-source platform for tracing, evaluations, and prompt management. Self-hostable alternative to LangSmith with clean UX.

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 (1)

Helicone

Only Langfuse (26)

CursorClaude CodeOpenHandsCrewAIAutoGenLangGraphLangChainLlamaIndex

Only Arize Phoenix (1)

Langfuse
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