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LLM Observability
Methodology

Weights & Biases vs Arize Phoenix

Weights & BiasesWEWeights & BiasesvsArize PhoenixARArize Phoenix
Weights & BiasesArize Phoenix
48%
52%

Leading: Arize Phoenix (52.2%)

Statistics

MetricValue
Weights & Biases wins43
Arize Phoenix wins47
Abstains (no tool)122
Other tool chosen3677
Decisive cases90
Weights & Biases win rate (unweighted)47.8%
95% CI37.8% - 58.0%
Weights & Biases win rate (weighted)47.8%

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Weights & Biases

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Arize Phoenix

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Per-model breakdown

ModelTierWeights & BiasesArize PhoenixNoneOtherA rate
Llama 4 ScoutSmall20027145100%
Qwen3 Coder NextMid01921820%
MiniMax M2.7Frontier01531120%
Devstral 2 2512Mid1032614677%
DeepSeek R1 0528Frontier602196100%
Gemini 2.5 FlashSmall601125100%
Mistral Small 4Mid0631900%
DeepSeek V3.2Mid0201300%
MiMo V2.5 ProFrontier10566100%
Gemini 3.5 FlashSmall011700%
GPT 5.4 MiniMid0151980%
Claude Haiku 4.5Small002198n/a
Claude Opus 4.6Frontier000132n/a
Claude Opus 4.8Frontier00666n/a
Claude Sonnet 4.6Frontier006198n/a
DeepSeek V4 FlashMid00467n/a
DeepSeek V4 ProFrontier00171n/a
Gemini 2.5 ProFrontier007197n/a
GLM 5 TurboFrontier000132n/a
GLM 5.2Frontier00072n/a
GPT 5.3 CodexFrontier000204n/a
GPT 5.4Frontier000132n/a
GPT 5.5Frontier00270n/a
Kimi K2.5Frontier004115n/a
Kimi K2.7 CodeFrontier00071n/a
Llama 4 MaverickFrontier0012191n/a
MiMo V2 ProFrontier002130n/a
MiniMax M3Frontier00171n/a

Per-prompt breakdown

PromptTierWeights & BiasesArize PhoenixNoneOtherA rate
ai-support-agent-platformAdvanced108151456%
ai-revenue-ops-copilotAdvanced89350647%
ai-revenue-ops-copilotBeginner953249064%
ai-engineering-workflowIntermediate73010870%
ai-support-agent-platformIntermediate28152420%
ai-revenue-ops-copilotIntermediate45151144%
ai-engineering-workflowAdvanced36010733%
ai-support-agent-platformBeginner03165120%
ai-agent-applicationAdvanced000117n/a
ai-agent-applicationBeginner0019100n/a
ai-agent-applicationIntermediate001117n/a
ai-engineering-workflowBeginner004871n/a