HEAD-TO-HEAD · PRICES VERIFIED 2026-08-27
Self-host Firecracker (Hetzner) vs Fly Machines
Self-host Firecracker (Hetzner) and Fly Machines have no comparable captured rates. Both render unranked in our engine, so no computed verdict exists. Compare their published plans directly via each row's source links.
Monthly Cost Across Realistic Benchmarks
Rate Card Snapshot
| Vendor | $/vCPU-hr | $/GiB-hr | Billing granularity | Concurrency note |
|---|---|---|---|---|
| Self-host Firecracker (Hetzner) | – | incl. | – | Bounded only by host capacity: the point of self-hosting. |
| Fly Machines | – | incl. | per-second | – |
Fit Notes
- Self-host Firecracker (Hetzner): Skip if usage is bursty or spiky. The host bills 24/7 whether sandboxes run or not; below roughly half utilization the managed providers win on total cost and you still own the pager.
- Fly Machines: Skip if you need a single per-vCPU+per-GiB price. Fly sells bundled presets that don’t decompose into our two-axis model; compare preset totals directly.
Self-host Firecracker (Hetzner)
StrengthsFly Machines
StrengthsRun your own workload through the full interactive calculator, or browse all pairs on the comparisons hub.
Frequently Asked Questions
Which is cheaper, Self-host Firecracker (Hetzner) or Fly Machines?
Self-host Firecracker (Hetzner) and Fly Machines have no comparable captured rates. Both render unranked in our engine, so no computed verdict exists. Compare their published plans directly via each row's source links.
How were these Self-host Firecracker (Hetzner) vs Fly Machines costs computed?
Both vendors run identical workload profiles (sandbox-hours × vCPU/RAM) through the same engine using each vendor's captured USD list rates; the full methodology is on the agent-sandbox-pricing tool page.