AI Briefing
KO

Faster build times for large-scale projects

·2026.01.14 22:00

Key point

Vercel optimized its build system to cut build times for large-scale projects by an average of 2.8 seconds, up to 12 seconds at most.

Details

Build system optimizations were applied to reduce overhead for projects with many input files, large node_modules, or large build outputs.

Expensive disk operations such as large file detection and folder size calculation were removed from the critical path for a successful build. These operations now run only when a build fails or when the VERCEL_BUILD_SYSTEM_REPORT environment variable is enabled.

This optimization reduced build times by an average of 2.8 seconds, with improvements of up to 12 seconds for larger builds.

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