These tools competes with
LangfusevsArize Phoenix
OSS LLM engineering platform versus ML/LLM observability and evaluation platform
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 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
Side-by-side comparison
Field
Langfuse
Arize Phoenix
Category
LLM Infrastructure
LLM Infrastructure
Type
Open Source
Open Source
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Cloud: $59/mo
Enterprise: Custom
GitHub Stars
⭐ 7,000
⭐ 4,000
Langfuse
Open-source platform for tracing, evaluations, and prompt management. Self-hostable alternative to LangSmith with clean UX.
Shared Connections1 tools both integrate with
Only Langfuse (26)
CursorClaude CodeOpenHandsCrewAIAutoGenLangGraphLangChainLlamaIndexDifyMastra
Only Arize Phoenix (1)
Langfuse
Explore the full AI landscape
See how Langfuse and Arize Phoenix fit into the bigger picture — 123 tools, 304 relationships, all mapped.