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Testing
Methodology

Cypress vs Vitest

CypressCYCypressvsVitestVIVitest
CypressVitest
48%
52%

Leading: Vitest (52.4%)

Insufficient data
This matchup has 21 decisive cases (minimum 30 required for publication).

Statistics

MetricValue
Cypress wins10
Vitest wins11
Abstains (no tool)116
Other tool chosen191
Decisive cases21
Cypress win rate (unweighted)47.6%
95% CI28.3% - 67.6%
Cypress win rate (weighted)47.6%

Comments

Cypress

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Vitest

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Per-model breakdown

ModelTierCypressVitestNoneOtherA rate
DeepSeek V4 FlashMid06190%
Devstral 2 2512Mid5019100%
Llama 4 ScoutSmall50111100%
Claude Sonnet 4.6Frontier05760%
Claude Haiku 4.5Small0090n/a
Claude Opus 4.8Frontier00615n/a
DeepSeek R1 0528Frontier00161n/a
DeepSeek V4 ProFrontier00811n/a
Gemini 2.5 ProFrontier00416n/a
Gemini 3.5 FlashSmall00516n/a
GLM 5.2Frontier00318n/a
GPT 5.3 CodexFrontier00610n/a
GPT 5.4 MiniMid00812n/a
GPT 5.5Frontier00512n/a
Kimi K2.7 CodeFrontier0089n/a
Llama 4 MaverickFrontier0010n/a
MiMo V2.5 ProFrontier00124n/a
MiniMax M3Frontier00120n/a
Mistral Small 4Mid0037n/a
Qwen3 Coder NextMid00115n/a

Per-prompt breakdown

PromptTierCypressVitestNoneOtherA rate
ai-engineering-workflowIntermediate68197943%
ai-engineering-workflowBeginner13784525%
ai-engineering-workflowAdvanced301967100%