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LLM Observability
Methodology

Weights & Biases vs Arize Phoenix

Weights & BiasesWEWeights & BiasesvsArize PhoenixARArize Phoenix
Weights & BiasesArize Phoenix
49%
51%

Leading: Arize Phoenix (50.5%)

Statistics

MetricValue
Weights & Biases wins47
Arize Phoenix wins48
Abstains (no tool)129
Other tool chosen3781
Decisive cases95
Weights & Biases win rate (unweighted)49.5%
95% CI39.6% - 59.4%
Weights & Biases win rate (weighted)49.5%

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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 ScoutSmall23029146100%
Qwen3 Coder NextMid01921880%
MiniMax M2.7Frontier01531060%
Devstral 2 2512Mid1032514277%
DeepSeek R1 0528Frontier702201100%
Mistral Small 4Mid0731950%
Gemini 2.5 FlashSmall601119100%
DeepSeek V3.2Mid0201240%
MiMo V2.5 ProFrontier10677100%
Gemini 3.5 FlashSmall011820%
GPT 5.4 MiniMid0152040%
Claude Haiku 4.5Small003203n/a
Claude Opus 4.6Frontier000126n/a
Claude Opus 4.8Frontier00777n/a
Claude Sonnet 4.6Frontier007203n/a
DeepSeek V4 FlashMid00479n/a
DeepSeek V4 ProFrontier00183n/a
Gemini 2.5 ProFrontier006204n/a
GLM 5 TurboFrontier000126n/a
GLM 5.2Frontier00084n/a
GPT 5.3 CodexFrontier000210n/a
GPT 5.4Frontier000126n/a
GPT 5.5Frontier00381n/a
Kimi K2.5Frontier004110n/a
Kimi K2.7 CodeFrontier00083n/a
Llama 4 MaverickFrontier0014195n/a
MiMo V2 ProFrontier002124n/a
MiniMax M3Frontier00183n/a

Per-prompt breakdown

PromptTierWeights & BiasesArize PhoenixNoneOtherA rate
ai-support-agent-platformAdvanced108151456%
ai-revenue-ops-copilotAdvanced89250847%
ai-revenue-ops-copilotBeginner1053049167%
ai-engineering-workflowIntermediate93012575%
ai-engineering-workflowAdvanced47012436%
ai-support-agent-platformIntermediate28152420%
ai-revenue-ops-copilotIntermediate45151244%
ai-support-agent-platformBeginner03175110%
ai-agent-applicationAdvanced000136n/a
ai-agent-applicationBeginner0021117n/a
ai-agent-applicationIntermediate001136n/a
ai-engineering-workflowBeginner005583n/a