Linux sandboxes
Metered by the second
Show rate per
≈$0.0000043667
per physical core / second
$0.00000074
per GiB memory / second
- One physical core equals two vCPUs
- Minimum allocation of 0.125 cores
- CPU and memory calculated independently
Pay for what runs.Nothing else.
Linux by the second. iOS simulators by the minute. Xcode builds are free in beta.
Usage ledgerLive
01
Linux sandbox
sbx-4f2a
00:37:12
metered / second
02
iOS simulator
sim-a91c
08:42
metered / minute
03
Xcode build
build-0182
complete
$0 / beta
Exact runtimeIdle = $0
iOS simulators
A real device minute
$0.02/ minute
$1.20 for a full active hour.
- Browser-streamed iOS simulator
- API and CLI control included
- Metered per simulator minute
Xcode builds
Free during beta
$0/ build
For early Run Cloud users throughout beta.
- Archive, sign, and export
- Build without maintaining a Mac
- Free pricing applies throughout beta
Linux compute
Compare the rates.
Adjust concurrency and monthly runtime to compare normalized Linux compute estimates across providers.
Broad and exact placement apply only published region-selection premiums. Providers without a published multiplier remain unchanged.
Normalized to 2 vCPU / 4 GiB. Estimates apply each provider's published usage rates or nearest matching tier to the same runtime.
Run Cloud1×
Per-second CPU + memoryFly.io≈3.7×
Performance-2x / 4 GB regional rateCodeSandbox≈5.7×
On-demand VM credit rateE2B≈6.3×
Per-second CPU + memoryDaytona≈6.3×
Per-second CPU + memoryBlaxel≈6.3×
Active compute by allocated memoryCloudflare≈6.8×
Containers at 100% active CPUModal≈9×
Sandbox rate at 3× base CPU + memoryVercel≈12.9×
Sandbox at 100% active CPUIllustrative usage estimate only. Plan fees, included credits, storage, network, and creation charges are excluded. Active-CPU providers assume 100% utilization; lower utilization can reduce their actual bill.
Competitor prices reviewed July 12, 2026 from official sources: Modal, Modal region selection, E2B, Blaxel, CodeSandbox, Vercel, Cloudflare, Fly.io, Daytona. Prices and billing models can change; verify the linked source before making purchasing decisions.
The landscape
A directional view of the sandbox providers covered by the Run Cloud compatibility layer. Change the dimension to see how each product is positioned.
affordableexpensivecomplex setupone command
- Run Cloud
- Cloudflare
- Fly.io
- Daytona
- Blaxel
- E2B
- CodeSandbox
- Modal
- Vercel
Directional product positioning based on publicly documented capabilities reviewed July 2026. Positions are qualitative, not benchmark scores, and products change over time.
Worked examples
Tiny numbers. Predictable totals.
Illustrative Linux costs assume the listed allocation runs continuously for one hour.
Small agent
$0.00526
per running hour
- CPU
- 0.25 core
- Memory
- 0.5 GiB
Standard agent
$0.02105
per running hour
- CPU
- 1 core
- Memory
- 2 GiB
Parallel build
$0.04210
per running hour
- CPU
- 2 cores
- Memory
- 4 GiB
iOS · 15 minutes$0.30
iOS · 30 minutes$0.60
iOS · 60 minutes$1.20
Pricing FAQ
The practical details.
How is Linux sandbox usage calculated?+
Linux sandbox compute is metered by the second. CPU costs approximately $0.0000043667 per physical core-second and memory costs $0.00000074 per GiB-second. CPU and memory usage are metered independently.
What does one physical core mean?+
One physical CPU core is equivalent to two vCPUs. Linux sandboxes have a minimum CPU allocation of 0.125 physical cores.
How much does an iOS simulator cost?+
iOS simulator sessions cost $0.02 per minute. A 15-minute session costs $0.30, 30 minutes costs $0.60, and one hour costs $1.20.
Are Xcode builds really free?+
Yes. Xcode builds are free for early Run Cloud users throughout the beta period. Post-beta pricing has not been announced yet.
Will Linux sandbox rates change?+
The rates shown here are Run Cloud launch pricing. Any future pricing changes will be published before they affect billing.
Start in beta. Build for real.
Try Linux sandboxes, open an iOS simulator, and ship your first Xcode build without maintaining the fleet.