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Arize Phoenix alternatives

The highest-scoring alternative to Arize Phoenix is Vellum at 88/100 on the AgentReady, against 70/100 for Arize Phoenix.

All scored in LLM Observability & Evals.

ScoreAlternativeCompare
88VellumArize Phoenix vs Vellum
83PromptLayerArize Phoenix vs PromptLayer
63HeliconeArize Phoenix vs Helicone
63PortkeyArize Phoenix vs Portkey
55BraintrustArize Phoenix vs Braintrust
51HumanloopArize Phoenix vs Humanloop
47TraceloopArize Phoenix vs Traceloop
34LangGraphArize Phoenix vs LangGraph

An agent can get this list directly: resolve("alternative to Arize Phoenix") over the MCP server, or GET /v1/categories/llm-observability.