Arize AI

Arize AI is an AI observability and evaluation company that helps engineering and data science teams monitor, troubleshoot, and improve machine learning models, LLM applications, and autonomous agents in production. Its commercial platform (Arize AX) pairs end-to-end tracing with an evaluation framework that scores spans, traces, and sessions, surfaces drift and performance regressions, and supports prompt iteration and root-cause debugging. Arize is closely associated with Phoenix, its widely adopted open-source observability and evaluation project built on the OpenInference and OpenTelemetry standards, which gives developers a free, self-hostable path to LLM tracing and evals before adopting the managed product. This open-core approach is a key differentiator: teams can start local with Phoenix and graduate to enterprise-scale monitoring on Arize AX. For governance use cases, Arize contributes the observability and evidence layer that regulated organizations need, offering continuous monitoring, fairness and bias tracking, drift detection, and audit-ready records that map to internal risk and compliance processes rather than acting as a standalone policy engine. It targets AI engineers, ML teams, and enterprises running RAG systems, copilots, and agents.