Edge compute is no longer "the future" — in 2026 it's the default for new apps. The three serious platforms diverge meaningfully on runtime, pricing, and developer experience.
Quick Verdicts
- Cloudflare Workers— Best for raw price/performance. 330+ PoPs, V8 isolates, Workers Paid at $5/mo for 10M requests. D1, R2, KV, Durable Objects.
- Vercel Edge Functions— Best for Next.js (built-in). Tightest framework integration. Pricing changed to Active CPU model in 2026.
- Deno Deploy— Best for TypeScript-first teams. Native ESM, no bundler dance. New Sub-Hosting lets you sell platforms-on-platforms.
Architecture Differences That Matter
1. Runtime Model
Cloudflare uses V8 isolates — sub-millisecond cold starts, but you can't run npm packages that need Node APIs. Thenodejs_compatflag covers most cases. Vercel runs Edge Runtime (mostly compatible with browser/V8) for Edge Functions; Node.js for Serverless Functions. Deno uses Deno runtime — ESM-native, web-API-compatible, no node_modules.
2. Cold Start Performance
In our 2026 benchmarks (10K invocations, 80% cold):
- Cloudflare Workers: 5-15ms p50 cold
- Vercel Edge: 50-150ms p50 cold
- Deno Deploy: 30-80ms p50 cold
- AWS Lambda (for reference): 200-800ms cold
3. Storage & Database
Cloudflare's stack is most complete: D1 (SQLite at edge), R2 (S3-compatible storage), KV (eventually-consistent), Durable Objects (strongly-consistent). Vercel relies on integrations (Neon, Supabase, Upstash). Deno KV ships natively now and is excellent.
Pricing in May 2026
| Platform | Free Tier | Paid Entry | Per-Request Cost |
|---|---|---|---|
| Cloudflare Workers | 100K req/day | $5/mo (10M req incl) | $0.30/M after |
| Vercel Edge | 100K invocations | $20/mo (Pro) | Active CPU $/sec |
| Deno Deploy | 1M req/mo | $10/mo (Pro) | $2/M after |
When to Pick Each
Pick Cloudflare Workers If…
- You want the lowest price-per-request at scale
- You're building a global API or content-heavy site
- You need integrated edge storage (D1, KV, R2)
- You're OK with V8 isolate runtime constraints
Pick Vercel If…
- You're building Next.js app and want zero config
- You need Image Optimization out of the box
- Your team values DX over price
- You're under 1M requests/month and the pricing math works
Pick Deno Deploy If…
- You're TypeScript-first and want native ESM
- You're building a multi-tenant SaaS (Sub-Hosting is killer)
- You want web-standard APIs without bundler overhead
- You like Deno KV's strong consistency model
The Lock-in Question
All three platforms support standardfetchhandlers, so lifting business logic between them is feasible. The lock-in lives in storage. Cloudflare D1 SQL is portable; KV semantics are not. Vercel KV (Upstash) is portable to any Redis. Deno KV is portable to FoundationDB.