Use Railway when Next.js is one service in a broader application topology and a continuously running, container-like runtime is a good fit. Use Vercel when framework-aware delivery, previews, CDN behavior, and request-driven scaling are the primary advantages.
Compare runtime shape first
Railway’s official guide runs a standalone Next.js server and can place Postgres beside it with referenced variables and a pre-deploy migration command. This resembles a general application service and supports long-lived process patterns.
Vercel decomposes the framework into managed delivery and compute primitives. That removes server sizing for suitable workloads but introduces function, transfer, request, image, and product dimensions with documented limits.
Model idle and peak behavior
Railway resource cost follows allocated CPU, memory, egress, and volumes beyond included plan usage. Vercel function cost follows active CPU, provisioned memory, invocations, and other platform resources. A mostly idle service and a bursty request workload can produce very different outcomes on the two models.
Do not select from a toy monthly estimate. Deploy the same representative application, include its database and background work, exercise peak traffic, and compare operational visibility and rollback.