Next.js Evals is a benchmarking tool developed by Vercel to assess the performance of AI coding agents in executing Next.js code generation and migration tasks. By measuring success rates and execution times, it provides developers with valuable insights into the effectiveness of various AI models when applied to Next.js projects. The evaluations are conducted regularly, with the latest run dated April 6, 2026. Key Features and Functionality: - Comprehensive Performance Metrics: Next.js Evals offers detailed performance results, including success rates and execution times, for AI coding agents across multiple tasks. - Regular Evaluations: The tool conducts periodic assessments to ensure up-to-date and relevant data, aiding developers in making informed decisions about AI model selection. - Open-Source Transparency: With its GitHub repository, Next.js Evals allows for community verification, contribution, and a clear understanding of the benchmarking processes. Primary Value and User Solutions: Next.js Evals addresses the need for objective benchmarks in the rapidly evolving field of AI-assisted coding. By providing concrete data on the performance of AI models in Next.js environments, it helps developers and organizations identify the most effective tools for their specific coding and migration tasks. This leads to optimized development workflows, reduced trial-and-error, and more efficient project execution.