Vercel Bun Functions hit 5GB, 30 minutes

This pushes Vercel’s Bun runtime closer to serious backend infrastructure, though the beta and plan restrictions still make it better for selective workloads than universal migration.

• –The 5GB limit removes a major barrier for dependency-heavy applications and large generated clients.
• –Thirty-minute execution windows fit long LLM workflows, document processing, browser automation, and streaming responses.
• –Fluid Compute is required, with availability focused on Pro and Enterprise teams.
• –Long-running synchronous functions still need careful timeout, retry, and cost management; queues and durable workflows remain preferable for critical jobs.
• –Bun on Vercel remains in beta, so teams should validate compatibility and performance against Node.js before switching production workloads.