Edge computing comparison posts in 2026 are mostly Cloudflare Workers tutorials with a token paragraph on each alternative. This is the version after deploying production workloads on Cloudflare Workers, Vercel Edge Functions, Deno Deploy, and Bun runtime — including the WordPress Stack Advisor that runs as a Vercel Edge Function. Four runtimes, real production economics, the honest 2026 picture.
Edge computing in 2026 is mostly a 'pick the runtime your platform makes easy' decision rather than a deeply differentiated technical choice. The runtimes are converging on V8 isolates plus Web Standards APIs, the cold-start performance is comparable, and the meaningful differences are increasingly about pricing, deployment ergonomics, and which platform you are already on. The cloud hosting comparison covers the platform side; this post is specifically about the edge runtime layer.
The four edge runtimes in 60 seconds
- Cloudflare Workers — V8 isolates running on 250+ data centers globally. Free tier 100K requests/day, Workers Paid $5/month + $0.30 per million requests. The most mature edge platform with the cheapest scale economics.
- Vercel Edge Functions — V8 isolates on Vercel's network, integrates natively with Next.js Edge runtime. Included in Vercel Pro $20/seat plus invocation pricing. Best DX for Next.js Edge workloads.
- Deno Deploy — Deno runtime on a global edge network, Web Standards APIs, TypeScript-first. Free tier generous, Pro $20/month. Right for Deno-shaped projects.
- Bun runtime — JavaScript runtime that runs anywhere (Vercel, Cloudflare, Render, your own server). Faster than Node for most workloads. Not edge-specific but increasingly used in edge contexts.
Where each runtime actually wins
Cloudflare Workers: cheapest at scale, most mature platform
Cloudflare Workers is the edge runtime with the lowest cost at scale and the largest global footprint. The 250+ data centers mean genuinely low latency anywhere. The pricing model — $5/month base plus $0.30 per million requests — is dramatically cheaper than Vercel Edge Functions for high-volume workloads. The DX has improved significantly since the early days but remains less polished than Vercel for Next.js-specific use cases. Right when cost matters or when global edge presence is the explicit requirement.
- Wins on: cost at scale (5-10x cheaper than Vercel for high-volume), global footprint, mature platform.
- Falls short on: Next.js-specific DX, integrated build pipeline (Wrangler is good but not Vercel-good).
Vercel Edge Functions: when Next.js Edge runtime is the brief
Vercel Edge Functions are the right call when you are already on Vercel and your edge logic is Next.js Edge runtime code. The integration with the Next.js framework is seamless — middleware, edge API routes, edge Server Components all just work. The Stack Advisor runs as a Vercel Edge Function in production at /tools/wordpress-stack-advisor/. Pricing is included in Vercel Pro at small scale; at large scale the costs add up faster than Cloudflare.
- Wins on: Next.js Edge integration, mature DX, included in Pro tier at small scale.
- Falls short on: cost at high volume, framework lock-in (works best with Next.js), platform lock-in to Vercel.
Deno Deploy: TypeScript-first edge with Web Standards
Deno Deploy is the edge platform for Deno-shaped projects. Web Standards APIs (Request, Response, fetch) are first-class, TypeScript runs natively without a build step, the runtime is genuinely fast. Right call when the project is Deno from the start; less compelling when you are bringing Node-shaped code to the edge (Cloudflare and Vercel handle that better).
- Wins on: Deno-native projects, TypeScript without builds, Web Standards alignment.
- Falls short on: Node ecosystem compatibility, smaller community, fewer integrations versus Cloudflare or Vercel.
Bun runtime: faster than Node, runs anywhere
Bun is not an edge platform per se — it is a JavaScript runtime that runs Node-shaped code 2-4x faster than Node itself. Increasingly deployed at the edge via Cloudflare Workers (Bun-compatible mode) or self-hosted on Fly.io. Right call for performance-sensitive workloads where the runtime speed itself matters; the edge deployment story is platform-dependent.
- Wins on: raw performance versus Node, Node ecosystem compatibility, single-binary deployment.
- Falls short on: native edge platform (you bring your own infrastructure), production maturity (still pre-1.0 for some use cases).
Decision tree — pick by platform and workload
You are already on Vercel and shipping Next.js
Vercel Edge Functions. The integration with the framework is unmatched and the cost is bundled at small scale. Move to Cloudflare only if cost becomes a real line item.
You need cheapest-at-scale global edge
Cloudflare Workers. The economics at high volume are genuinely better, and the global footprint is the largest in the category.
You are working in a Deno-native codebase
Deno Deploy. Native TypeScript, Web Standards APIs, fast cold starts. Right when the team has chosen Deno for the whole stack.
You need raw runtime performance and you are deploying anywhere
Bun runtime on whichever platform you are already on. Cloudflare, Fly.io, or self-hosted all work.
Cost economics for a typical workload
Anchored to a hypothetical workload: 10M edge requests per month, 50ms median execution time, mostly geo-routing and authentication middleware.
- Cloudflare Workers: $5/month base + $0.30 × 10M / 1M = $8/month additional = ~$13/month all-in. Annual ~$156.
- Vercel Edge Functions: included in Pro for the first 500K invocations; past that, ~$2 per million additional invocations + $0.40 per GB-second compute. At 10M invocations/month: ~$30-50/month including compute. Annual ~$400-600.
- Deno Deploy: free up to 1M requests/month; Pro $20/month gets 5M; past that ~$2 per additional million. At 10M: ~$30/month. Annual ~$360.
Cloudflare wins on price at this scale by 2-4x. The choice usually comes down to whether the DX premium of Vercel Edge is worth the cost difference for your specific brief.
FAQ
Are Cloudflare Workers ready for production?
Yes, and have been since 2020. Cloudflare Workers run real production workloads at the largest scales — the platform is mature, the SLA is strong, and the global footprint is the largest in the edge category. The DX gap to Vercel Edge for Next.js-specific use cases is the main remaining objection; for non-Next.js workloads Cloudflare is often the better choice.
Is Vercel Edge Functions just Cloudflare under the hood?
No. Vercel Edge Functions run on Vercel's own infrastructure, not on Cloudflare. The runtime is V8 isolates (similar to Cloudflare Workers' approach) but the deployment platform is fully Vercel-controlled. The two are legitimate competitors, not the same service with different branding.
Can I run Next.js on Cloudflare Workers?
Yes, via the @cloudflare/next-on-pages adapter or the OpenNext.js project. Works for most Next.js features but is meaningfully more fragile than running on Vercel — image optimisation, ISR, and Server Actions sometimes need workarounds. For most teams the DX hit is not worth the cost saving until you are at very high scale.
Should I switch from Node to Bun?
For new projects, Bun is worth evaluating — the speed gain is real and the Node ecosystem compatibility is good. For existing production codebases, the migration risk usually outweighs the speed benefit unless runtime performance is a measured bottleneck.
Related reading
Cloud hosting in 2026: Vercel, Netlify, Cloudflare, Render — the platform-level comparison that shapes the edge runtime decision.
Web Frameworks Hub — the framework choice intersects with the edge runtime story.
WordPress Stack Advisor — production reference for a Vercel Edge Function in real use.
The edge runtime pick is mostly determined by which platform you're already on. Pick Vercel Edge if you are on Vercel, Cloudflare Workers if cost matters, Deno Deploy if you are Deno-native. The rest is detail.
Book a 30-minute edge / runtime call — describe the workload, the volume, the platform context. Walk away with a Vercel-vs-Cloudflare-vs-Deno-vs-Bun decision that fits.