Vercel has released Bun runtime support for Vercel Functions in public beta, enabling developers to choose between Node.js and Bun per-workload. Internal benchmarks show Bun delivers 28% lower latency in CPU-bound Next.js server-side rendering compared to Node.js, attributed to optimized web streams handling and reduced garbage collection overhead. Support currently covers Next.js, Express, Hono, and Nitro frameworks.
Infrastructure
Bun runtime on Vercel Functions
Vercel launches Bun runtime support for Functions in public beta, delivering 28% lower SSR latency than Node.js through optimized garbage collection and web streams handling.
Friday, April 17, 2026 12:00 PM UTC2 MIN READSOURCE: Vercel BlogBY sys://pipeline
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