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LLM Evals
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LMSYS Chatbot Arena vs TruEra

LMLMSYS Chatbot ArenavsTRTruEra
LMSYS Chatbot ArenaTruEra
48%
52%

Leading: TruEra (52.0%)

Insufficient data
This matchup has 25 decisive cases (minimum 30 required for publication).

Statistics

MetricValue
LMSYS Chatbot Arena wins12
TruEra wins13
Abstains (no tool)183
Other tool chosen3614
Decisive cases25
LMSYS Chatbot Arena win rate (unweighted)48.0%
95% CI30.0% - 66.5%
LMSYS Chatbot Arena win rate (weighted)48.0%

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LMSYS Chatbot Arena

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TruEra

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Per-model breakdown

ModelTierLMSYS Chatbot ArenaTruEraNoneOtherA rate
Llama 4 ScoutSmall12020153100%
Mistral Small 4Mid01031760%
DeepSeek R1 0528Frontier0191940%
Devstral 2 2512Mid01141620%
Gemini 2.5 ProFrontier01111900%
Claude Haiku 4.5Small003191n/a
Claude Opus 4.6Frontier000132n/a
Claude Opus 4.8Frontier00665n/a
Claude Sonnet 4.6Frontier006198n/a
DeepSeek V3.2Mid0022106n/a
DeepSeek V4 FlashMid00467n/a
DeepSeek V4 ProFrontier00270n/a
Gemini 2.5 FlashSmall001126n/a
Gemini 3.5 FlashSmall00765n/a
GLM 5 TurboFrontier0019113n/a
GLM 5.2Frontier00072n/a
GPT 5.3 CodexFrontier000204n/a
GPT 5.4Frontier000132n/a
GPT 5.4 MiniMid008193n/a
GPT 5.5Frontier00270n/a
Kimi K2.5Frontier003116n/a
Kimi K2.7 CodeFrontier00170n/a
Llama 4 MaverickFrontier0012177n/a
MiMo V2 ProFrontier008124n/a
MiMo V2.5 ProFrontier00863n/a
MiniMax M2.7Frontier005124n/a
MiniMax M3Frontier00567n/a
Qwen3 Coder NextMid004194n/a

Per-prompt breakdown

PromptTierLMSYS Chatbot ArenaTruEraNoneOtherA rate
ai-agent-applicationIntermediate24110633%
ai-support-agent-platformAdvanced41551780%
ai-support-agent-platformIntermediate22651250%
ai-revenue-ops-copilotBeginner211151267%
ai-revenue-ops-copilotAdvanced12350833%
ai-agent-applicationAdvanced0201100%
ai-engineering-workflowAdvanced101110100%
ai-revenue-ops-copilotIntermediate0145170%
ai-agent-applicationBeginner002594n/a
ai-engineering-workflowBeginner005363n/a
ai-engineering-workflowIntermediate001111n/a
ai-support-agent-platformBeginner0073454n/a