Preseason
MatchesRankingsPrompts
GitHub
Preseason
MatchesRankingsPromptsMethodologyContact

© 2026 Preseason. All rights reserved.

PrivacyTerms
@betocmn
LLM Evals
Methodology

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)194
Other tool chosen3718
Decisive cases25
LMSYS Chatbot Arena win rate (unweighted)48.0%
95% CI30.0% - 66.5%
LMSYS Chatbot Arena win rate (weighted)48.0%

Comments

LMSYS Chatbot Arena

No comments yet

Verified critics can leave comments here.

TruEra

No comments yet

Verified critics can leave comments here.

Per-model breakdown

ModelTierLMSYS Chatbot ArenaTruEraNoneOtherA rate
Llama 4 ScoutSmall12023154100%
Mistral Small 4Mid01031830%
DeepSeek R1 0528Frontier01101990%
Devstral 2 2512Mid01141570%
Gemini 2.5 ProFrontier0191980%
Claude Haiku 4.5Small004196n/a
Claude Opus 4.6Frontier000126n/a
Claude Opus 4.8Frontier00776n/a
Claude Sonnet 4.6Frontier007203n/a
DeepSeek V3.2Mid0022101n/a
DeepSeek V4 FlashMid00479n/a
DeepSeek V4 ProFrontier00282n/a
Gemini 2.5 FlashSmall001120n/a
Gemini 3.5 FlashSmall00876n/a
GLM 5 TurboFrontier0019107n/a
GLM 5.2Frontier00084n/a
GPT 5.3 CodexFrontier000210n/a
GPT 5.4Frontier000126n/a
GPT 5.4 MiniMid008199n/a
GPT 5.5Frontier00381n/a
Kimi K2.5Frontier003111n/a
Kimi K2.7 CodeFrontier00182n/a
Llama 4 MaverickFrontier0014181n/a
MiMo V2 ProFrontier008118n/a
MiMo V2.5 ProFrontier00974n/a
MiniMax M2.7Frontier005118n/a
MiniMax M3Frontier00678n/a
Qwen3 Coder NextMid004199n/a

Per-prompt breakdown

PromptTierLMSYS Chatbot ArenaTruEraNoneOtherA rate
ai-agent-applicationIntermediate25112429%
ai-support-agent-platformAdvanced31551875%
ai-revenue-ops-copilotBeginner211151167%
ai-support-agent-platformIntermediate21551467%
ai-revenue-ops-copilotAdvanced12251133%
ai-revenue-ops-copilotIntermediate11451750%
ai-agent-applicationAdvanced0201290%
ai-engineering-workflowAdvanced101128100%
ai-agent-applicationBeginner0028110n/a
ai-engineering-workflowBeginner006173n/a
ai-engineering-workflowIntermediate001130n/a
ai-support-agent-platformBeginner0075453n/a