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Arize Phoenix vs OpenObserve

Arize PhoenixOpenObserve

Bottom line: Arize Phoenix for engineers debugging LLM and agent apps; OpenObserve for teams running agents in production.

	Arize Phoenix Open-source LLM and agent observability built on OpenTelemetry. Visit	OpenObserve OpenTelemetry-native observability for LLM calls, tools, and agent handoffs Visit
Votes	0	0
Pricing	Freemium	Freemium
Category	Llm Observability	Llm Observability
Tags	observabilityllm-evaluationopen-sourcetracingmonitoring	opentelemetryllm tracingagent observabilitytoken costopen source
Best for	Engineers debugging LLM and agent apps Teams wanting free, self-hosted observability Eval-driven development workflows	Teams running agents in production Platform teams already using OpenTelemetry Organisations needing LLM cost attribution
Pros	Free and source-available, self-hosts in one command Built on open OpenTelemetry standards Strong tracing and evaluation for agents and RAG Works locally, good for private/dev-time debugging Backed by Arize's observability expertise	Agent traces are standard OpenTelemetry spans, not a silo Per-span token cost from your own model pricing Unlimited users with no per-seat charge AGPL-3.0 core with a self-hosted option Self-hosted enterprise free up to 50 GB per day
Cons	Production-scale features require paid Arize AX Self-hosting means you run the infrastructure Dynatrace acquisition may change roadmap/governance Observability setup still requires instrumentation effort Evaluation quality depends on judge models and config	LLM observability is labelled preview Online evaluations are an enterprise feature Ingestion-based pricing needs volume forecasting Self-hosting carries operational overhead Payload capture raises data governance questions

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