NextJS - Factory Documentation

Official benchmark from Vercel measuring AI model performance on Next.js code generation and migration tasks. Evaluates success rate, execution time, token usage, and quality improvements.

Results

Last updated: December 2025

Methodology

Category	Description
Code Generation	Creating Next.js components, pages, and API routes
Migration	Upgrading from Pages Router to App Router
Best Practices	Following Next.js patterns and conventions
TypeScript	Proper type safety and inference

Scoring metrics:

Success Rate - Percentage of tasks completed correctly
Execution Time - Time to complete tasks
Token Usage - Efficiency of model responses
Quality Score - Code quality and best practices

Next.js Evals

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Terminal Bench

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​Methodology

Next.js Evals

Results

Methodology