Supabase, Cloudflare, and Vercel edge function comparison

Cloudflare Workers achieve cold starts under 5 milliseconds because they use V8 isolates. Supabase Edge Functions run on Deno, which results in cold starts between 120 and 200 milliseconds for typical AI workloads. Vercel provides two distinct paths for developers. Users can choose the V8 isolate-based Edge Runtime or the full Node.js environment. Vercel’s Node.js functions suffer from higher cold starts of 300 to 800 milliseconds.

Cloudflare wins on speed.

Supabase developers use the Supabase CLI. This tool packages functions into ESZip bundles for global distribution. The Deno runtime provides Web Standard APIs. It also supports TypeScript without extra build steps. This environment keeps code secure by default through a permission model. Because about 90 percent of popular npm packages work on Deno using the npm: specifier, developers find the ecosystem friendly. Through a single SDK, Supabase integrates Auth, Postgres, and Storage.

Vercel edge functions use Cloudflare Workers under the hood. Vercel also provides deep Next.js integration that simplifies deployment for framework users. You probably want to avoid a massive invoice after a traffic spike. Vercel bills for both user seats and usage. Vercel charges per seat. A developer using Vercel might pay twenty dollars per user per month before they even account for the additional costs of function invocations or the data transfer overages on the plan.

Cloudflare costs less.

Cloudflare provides a massive network of 330 cities. This density helps reduce latency for global users. Cloudflare also provides D1 for SQLite, R2 for object storage, and KV for key-value storage. At 10 million requests per month, Cloudflare Workers costs five dollars. However, Vercel’s Pro plan starts at twenty dollars per user. Vercel’s Fluid Compute bills only for active CPU time. Supabase Pro starts at twenty-five dollars per month. This Supabase plan includes two million function invocations and 100,000 monthly active users.

Supabase pauses inactive projects.

Technical limits vary across these platforms.

Supabase provides a free tier with 500 MB of database storage and 500,000 edge function invocations. This tier also allows 50,000 monthly active users. Users will face immediate constraints if they exceed the 2 GB bandwidth limit. Vercel’s Hobby plan includes 100 GB of bandwidth, but it restricts use to non-commercial projects. Vercel’s Pro plan includes 1 terabyte of bandwidth, but you pay fifteen cents for every additional gigabyte of data you transfer. Cloudflare does not charge for bandwidth on Workers.

Supabase Edge Functions have a 150 MB memory limit and a 60 second execution timeout. Cloudflare Workers free tier users receive 10 MB of egress data per day and 10ms of CPU time per request.

Cloudflare delivers the best return on investment for high-volume API deployment. Its pricing stays flat. Supabase provides an excellent experience for those who need Auth and Postgres tied together. Vercel remains the leader for Next.js users.

Does the lower latency of Cloudflare justify the higher complexity of its ecosystem?