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LLM Evals
Methodology

Arize Phoenix vs OpenAI

Arize PhoenixARArize PhoenixvsOpenAIOPOpenAI
Arize PhoenixOpenAI
44%
56%

Leading: OpenAI (56.5%)

Statistics

MetricValue
Arize Phoenix wins37
OpenAI wins48
Abstains (no tool)237
Other tool chosen4206
Decisive cases85
Arize Phoenix win rate (unweighted)43.5%
95% CI33.5% - 54.1%
Arize Phoenix win rate (weighted)43.5%

Comments

Arize Phoenix

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OpenAI

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Model range breakdown

Model rangeTierArize PhoenixOpenAINoneOtherA rate
DeepSeek Flash 3.2–4.1Mid02262080%
DeepSeek Pro 4–4 0813Frontier002106n/a
DeepSeek R1Frontier0012228n/a
DevstralMid0019182n/a
Gemini Flash 2.5–3.8Small1012222100%
Gemini Pro 2.5–3.1 PreviewFrontier0017221n/a
GLM 5 Turbo–5.3Frontier0019221n/a
GPT 5.4–6 AstraFrontier01152240%
GPT Coding 5.3 Codex–6.1 SolFrontier002238n/a
GPT Mini 5.4 Mini–6 LunaMid618920425%
HaikuSmall004227n/a
Kimi 2.5–3Frontier005221n/a
Llama MaverickFrontier121821033%
Llama ScoutSmall3029182100%
MiMo Pro 2–2.6Frontier014172080%
MiniMax M 2.7–3Frontier5012219100%
Mistral SmallMid505216100%
Opus 4.6–5.5Frontier009230n/a
Qwen CoderMid161421094%
Sonnet 4.6–5.5Frontier0011229n/a

Per-prompt breakdown

PromptTierArize PhoenixOpenAINoneOtherA rate
ai-support-agent-platformBeginner8178047932%
ai-revenue-ops-copilotBeginner891355447%
ai-support-agent-platformIntermediate39656225%
ai-revenue-ops-copilotAdvanced63356267%
ai-revenue-ops-copilotIntermediate51556983%
ai-engineering-workflowAdvanced33116150%
ai-engineering-workflowIntermediate301169100%
ai-agent-applicationAdvanced12017033%
ai-agent-applicationBeginner03401350%
ai-support-agent-platformAdvanced0155810%
ai-agent-applicationIntermediate001174n/a
ai-engineering-workflowBeginner008290n/a