These tools competes with
Arize PhoenixvsLangfuse
ML/LLM observability and evaluation platform versus OSS LLM engineering platform
Compare interactively in Explore →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
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
Arize Phoenix
Langfuse
Category
LLM Infrastructure
LLM Infrastructure
Type
Open Source
Open Source
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Enterprise: Custom
Cloud: $59/mo
GitHub Stars
⭐ 4,000
⭐ 7,000
Health
●75 — Active
●80 — Active
Arize Phoenix
Open-source observability platform for ML and LLM applications. Supports tracing, evaluation, and dataset management with a strong eval framework.
Shared Connections1 tools both integrate with
Only Arize Phoenix (1)
Langfuse
Only Langfuse (29)
Claude CodeCrewAILangGraphLangChainCursorLlamaIndexOpenHandsDifyMastraAutoGen
Explore the full AI landscape
See how Arize Phoenix and Langfuse fit into the bigger picture — 207 tools, 452 relationships, all mapped.