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Edge serverless platform · by Cloudflare

Cloudflare Workers (incl. Pages)

Serverless functions and full-stack apps running in V8 isolates in 330+ cities, with free unlimited static asset requests and no egress charges; Pages Functions bill the same way.

Visit workers.cloudflare.com ↗ Alternatives Free tier EU region
Cloudflare Workers (incl. Pages) homepage
§1

Overview

Cloudflare Workers runs your code in V8 isolates in every one of Cloudflare's 330+ cities rather than in a chosen region, so there are no cold starts and no region to pick; Smart Placement can instead move execution next to your database. Cloudflare Pages, the static-site product, now shares the platform, and Pages Functions are billed exactly like Workers. Full-stack apps built with React, Vue or Next.js can serve static assets and server logic from one Worker.

The free plan allows 100,000 requests per day with a 10 ms CPU limit per request, which covers many small APIs and sites because waiting on I/O does not count as CPU time. Workers Paid costs a $5 monthly minimum and includes 10 million requests and 30 million CPU milliseconds, then $0.30 per million requests and $0.02 per million CPU milliseconds. Requests for static assets are free and unlimited, and there is never a bandwidth charge.

The runtime is not Node.js: memory is capped at 128 MB per isolate and some Node APIs are only partly supported, so check library compatibility. Storage comes from Cloudflare's own products (KV, D1, R2, Durable Objects, Queues), each priced separately, or from external databases through Hyperdrive.

§2

Pricing and plans

Free tier · no card

100,000 Worker requests per day, 10 ms CPU per invocation, 100 Workers, 5 cron triggers; static asset requests are free and unlimited; no egress charges.

At the limit Stops at the limit Past 100,000 requests a day the Worker returns error 1027 (or is bypassed) until midnight UTC; nothing is charged.

Plan Price What you get
Workers Free $0/mo 100,000 requests/day, 10 ms CPU per request
Workers Paid $5/mo minimum 10M requests and 30M CPU-ms included; then $0.30 per 1M requests and $0.02 per 1M CPU-ms
Enterprise Custom Contracted usage model

No charge for data transfer (egress) or bandwidth on any plan. Requests to static assets are free and unlimited; cached responses from Workers Caching count as requests. KV, D1, R2, Durable Objects, Queues and Workers AI have their own allowances and rates. Compliance certifications are listed on Cloudflare's trust pages, which we did not read for this record, so the field is empty.

Source: developers.cloudflare.com/workers/platform/pricing/ · prices as published, excluding tax.

§3

What it does

No cold starts
V8 isolates start in milliseconds, so there is no provisioned concurrency to buy.
CPU-time billing
Only time spent executing code is billed; time waiting on fetches or database queries is free.
Static assets
Serve a site's files from the same Worker; asset requests are free and unlimited (20,000 files per version on Free, 100,000 on Paid).
Bindings to storage
Native access to KV, D1, R2, Durable Objects, Queues, Workers AI and Hyperdrive.
Cron Triggers and Workflows
Scheduled jobs (5 on Free, 250 on Paid) and durable multi-step workflows.
Gradual rollouts
Deploy new versions to a percentage of traffic and roll back instantly.
§4

Strengths and limitations

Strengths

  • No egress or bandwidth fees on any plan.
  • Global by default across 330+ cities with no cold starts.
  • Generous free tier: 100,000 requests a day plus unlimited static asset requests.
  • Very low cost at scale: 100M requests at 7 ms CPU is about $45/month in Cloudflare's own example.

Limitations

  • 128 MB memory per isolate on every plan.
  • Free plan CPU time is limited to 10 ms per request; Paid defaults to 30 seconds, up to 5 minutes.
  • Not a full Node.js environment; some npm packages will not run.
  • Free plan allows only 50 subrequests per request and 100 Workers.
§5

Who it suits

Good for

  • APIs and edge logic that must be fast worldwide
  • Static and full-stack sites with heavy traffic but light compute
  • Projects that want to avoid bandwidth bills

Look elsewhere if

  • Memory-heavy or long-running server processes
  • Apps that depend on native Node modules or a traditional container
§6

Alternatives to Cloudflare Workers (incl. Pages)

Tool From Free option Stages
Render Managed PaaS
$7/mo Free tier
Northflank Kubernetes-based PaaS
$2.70/mo Free tier
Netlify Frontend and serverless platform
$9/mo Free tier
Vercel Frontend and serverless platform
$20/mo Free tier
Google Cloud Run Serverless containers
Usage-based Free tier
Sevalla Managed PaaS
$5/mo Free tier

All app hosting and PaaS →

§7

Questions

Is Cloudflare Workers free?

Yes, the free plan allows 100,000 requests per day with 10 ms of CPU time per request. Workers Paid starts at $5/month.

Does Cloudflare charge for bandwidth on Workers?

No. Cloudflare states there are no additional charges for data transfer (egress) or throughput on Workers.

Are Cloudflare Pages and Workers billed separately?

Pages Functions are billed as Workers, with the same pricing and inclusions; static asset requests are free.

What languages does Cloudflare Workers support?

JavaScript, TypeScript, Python, Rust and WebAssembly.

Sources read for this page