HEAD-TO-HEAD · PRICES VERIFIED 2026-08-25
Modal (Sandboxes) vs Fly Machines
Modal (Sandboxes) 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
100 hr × 1 vCPU / 2 GiB
Modal (Sandboxes): $11.90 Fly Machines: unranked
Not comparable — missing captured rates500 hr × 2 vCPU / 4 GiB
Modal (Sandboxes): $119.00 Fly Machines: unranked
Not comparable — missing captured rates2,000 hr × 4 vCPU / 8 GiB
Modal (Sandboxes): $952.00 Fly Machines: unranked
Not comparable — missing captured ratesRate Card Snapshot
| Vendor | $/vCPU-hr | $/GiB-hr | Billing granularity | Concurrency note |
|---|---|---|---|---|
| Modal (Sandboxes) | $0.0710 | $0.0240 | per-second | Concurrency scales with plan; Starter $30/mo credits, Team $250/mo incl. $100/mo credits, Enterprise custom. |
| Fly Machines | — | incl. | per-second | — |
Fit Notes
- Modal (Sandboxes) — Skip if pure sandbox price is the decision — you pay ~40% over E2B/Daytona for the same vCPU-hour; Modal earns it back only when the rest of your stack already lives on Modal functions.
- 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.
Run your own workload through the full interactive calculator, or browse all pairs on the comparisons hub.