Cloudflare Workers vs. Fly.io Firecracker MicroVMs — Interactive Cost & Performance Calculator
Compare Cloudflare Workers vs Fly.io Firecracker MicroVMs side-by-side. Use our interactive calculator to estimate exact monthly costs, savings, and performance trade-offs at your scale.
Cloudflare Workers
Best for: Global edge APIs, routing & zero-egress R2 apps
Fly.io Firecracker MicroVMs
Best for: Multi-region stateful Elixir, Go & Rust servers
Side-by-Side Technical & Commercial Breakdown: Cloudflare Workers vs. Fly.io Firecracker MicroVMs
| Dimension | Cloudflare Workers | Fly.io Firecracker MicroVMs |
|---|---|---|
| Platform Provider | Cloudflare | Fly.io |
| Base Monthly Plan | $5/mo | $10/mo |
| Compute Rate (per 1M reqs) | $0.30 | $0.14 |
| Storage / Bandwidth (per GB) | $0.015/GB | $0.150/GB |
| Typical Cold Start | < 1 ms (V8 Isolates) | 250 ms machine wake |
| Included Free Tier | 100,000 reqs/day + zero egress fees | Pay-as-you-go resource consumption |
| Best Use Case | Global edge APIs, routing & zero-egress R2 apps | Multi-region stateful Elixir, Go & Rust servers |
Frequently Asked Questions
Which is more cost-effective in 2026: Cloudflare Workers or Fly.io Firecracker MicroVMs?
It depends on your workload volume. Use the interactive sliders above to model your exact monthly scale. Cloudflare Workers (Global edge APIs, routing & zero-egress R2 apps) and Fly.io Firecracker MicroVMs (Multi-region stateful Elixir, Go & Rust servers) have different unit economics that cross over as volume scales.
When should an engineering team choose Cloudflare Workers over Fly.io Firecracker MicroVMs?
Choose Cloudflare Workers when your primary priority is: Global edge APIs, routing & zero-egress R2 apps. Choose Fly.io Firecracker MicroVMs when you prioritize: Multi-region stateful Elixir, Go & Rust servers.