Shellbox
Linux microVMs for developers and AI agents, made and controlled over SSH.
Shellbox runs each sandbox in a Firecracker microVM. It costs $0.01 per vCPU-hour, with memory included.
Updated
$0.01
vCPU per hour
Included
RAM per GiB-hour
No limit
Max session
16 vCPU · 32 GiB
Largest sandbox
Shellbox specifications
List prices and limits for Shellbox
Pricing
shellbox- vCPU per hour
- $0.01
- RAM per GiB-hour
- Included
- Storage
- A stopped box costs $0.50 per x1 slot per month
- Billing
- Bundled machine time
- Free tier
- Not listed
- Paid plan from
- Pay as you goPrepaid balance, $10 minimum top-up. No subscription
Limits
shellbox- Max session
- No limitKeepalive mode keeps a box running 24/7
- Idle stop
- After 2 minutesPauses 120 seconds after the last SSH session ends. Keepalive turns this off
- Sandbox size
- 2 vCPU · 4 GiB, 4 vCPU · 8 GiB, 6 vCPU · 12 GiB, 8 vCPU · 16 GiB, 10 vCPU · 20 GiB, 12 vCPU · 24 GiB, 14 vCPU · 28 GiB, 16 vCPU · 32 GiBSizes x1 to x8. The size is set when you make the box
- Default size
- 2 vCPU · 4 GiB
- Concurrent sandboxes
- Up to 1616 running slots and 64 total slots per account. An xN box uses N slots
- Storage
- 50 GB SSD per x1 slot, up to 400 GB on x8
Platform
shellbox- Isolation
- Firecracker microVM
- GPU
- Not listed
- Snapshots
- Duplicate copies a stopped box with its memory snapshot
- Pause and resume
- Keeps processes, shell history and files in a memory snapshot
- Desktop
- Not listed
- Regions
- 1
Developer
shellbox- SDKs
- Not listed
- Integrations
- Claude Code
Shellbox plans
Hourly cost
Shellbox next to other providers
One sandbox with 2 vCPU and 4 GiB of RAM for one hour, at list price.
Agent37 Cloud
Hugging Face Sandboxes
Krova Cloud
Zipbox
StateSet Sandbox
Lizard Sandboxes
boatShellboxCompute only. Storage and network are not included.
Open the calculatorCompare Shellbox
Alternatives to Shellbox
Recent changes
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More pages that include Shellbox