Arize AI vs Langfuse

Detailed regulatory comparison mapping timeline compliance, pricing model, technical capabilities, and data residency.

Feature / Parameter	Arize AI	Langfuse
HQ & Data Sovereignty	Berkeley, USA US-Hosted	Berlin, Germany EU-Native
Target Role	PROVIDER	PROVIDER DEPLOYER
Pricing Tier	$0 / $450/mo (Freemium)	$0 / $59/mo (Freemium)
Active 2026 Focus	Prompt Evals & Token Tracking	Article 50 Execution Trace Logging Token Cost & Prompt Auditing
Prepare 2027/2028 (High-Risk)	Article 12 Production Observability & Model Drift Logs	Article 12 Mandatory Post-Market Audit Trails
Model Evals & Red-Teaming	✅ Supported	✅ Supported
Annex IV Technical Documentation	❌ Not Available	✅ Supported
ISO 42001 Control Mapping	❌ Not Available	❌ Not Available
Verified Audit Source	Inspect Evidence (2026-08-10) ↗	Inspect Evidence (2026-08-15) ↗

Run our interactive 3-step Assessment Engine to match your specific model tier, budget, and EU compliance deadline.