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Backend Framework
Methodology

NestJS vs FastAPI

NestJSNENestJSvsFastAPIFAFastAPI
NestJSFastAPI
24%
76%

Leading: FastAPI (75.9%)

Statistics

MetricValue
NestJS wins134
FastAPI wins421
Abstains (no tool)4
Other tool chosen236
Decisive cases555
NestJS win rate (unweighted)24.1%
95% CI20.8% - 27.9%
NestJS win rate (weighted)24.1%

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FastAPI

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Per-model breakdown

ModelTierNestJSFastAPINoneOtherA rate
Qwen3 Coder NextMid14210740%
GLM 5.2Frontier13210838%
GPT 5.4 MiniMid13190941%
Claude Opus 4.8Frontier112101034%
Gemini 3.5 FlashSmall11211934%
GPT 5.5Frontier102101132%
Kimi K2.7 CodeFrontier102101032%
DeepSeek V4 ProFrontier92201029%
GPT 5.3 CodexFrontier92201129%
Gemini 2.5 ProFrontier82011329%
Claude Sonnet 4.6Frontier62201421%
MiMo V2.5 ProFrontier52301418%
Llama 4 MaverickFrontier4221815%
Llama 4 ScoutSmall0260160%
DeepSeek V4 FlashMid2220108%
Mistral Small 4Mid2210129%
DeepSeek R1 0528Frontier2201189%
MiniMax M3Frontier1210205%
Claude Haiku 4.5Small0210140%
Devstral 2 2512Mid41401222%

Per-prompt breakdown

PromptTierNestJSFastAPINoneOtherA rate
ai-agent-applicationBeginner0137010%
ai-agent-applicationAdvanced1135201%
ai-agent-applicationIntermediate1135111%
full-stack-web-appAdvanced771111888%
full-stack-web-appIntermediate55307895%
full-stack-web-appBeginner000138n/a