Fly.io vs Vercel Functions

Pick two tools from the same category to compare side-by-side.

	Fly.io Container hosting near users; common for stateful agent backends.	Vercel Functions Serverless functions on Vercel; common for Node-first agent backends.
Category	deployment	deployment
Vendor type	commercial	commercial
Pricing	usage	freemium
Strengths	+ Run real containers, not just functions + Global region placement + Persistent volumes	+ Native Vercel AI SDK integration + Long-running and streaming function support + Polished DX
Tradeoffs	− More ops overhead than serverless	− Cost can climb at sustained high throughput
Used in stacks	6	5