Cloudflare Sandbox vs Shellbox
Cloudflare Sandbox costs $0.072 per vCPU-hour and Shellbox costs $0.01 per vCPU-hour. Cloudflare Sandbox runs Firecracker microVMs. Shellbox runs Firecracker microVMs and has no session limit.
Updated
Cloudflare Sandbox
- Isolation
- Firecracker microVM
- Free tier
- None
- Max session
- Not listed
Shellbox
- Isolation
- Firecracker microVM
- Free tier
- Not listed
- Max session
- No limit
What is different
7 fields differ. The rest are the same or not listed.
Cloudflare Sandbox
Shellbox
- vCPU, per hour
- Cloudflare Sandbox: $0.072
- Shellbox: $0.01
- RAM, per GiB-hour
- Cloudflare Sandbox: $0.009
- Shellbox: Included
- Storage
- Cloudflare Sandbox: $0.000252 per GiB-hour
- Shellbox: A stopped box costs $0.50 per x1 slot per month
- Paid plan from
- Cloudflare Sandbox: $5 / month
- Shellbox: Pay as you go
- Billing
- Cloudflare Sandbox: Active CPU time only
- Shellbox: Bundled machine time
- Largest sandbox
- Cloudflare Sandbox: 4 vCPU · 12 GiB
- Shellbox: 16 vCPU · 32 GiB
- Integrations
- Cloudflare Sandbox: Claude Code, OpenAI Agents SDK
- Shellbox: Claude Code
Full comparison
18 fields, at each provider's list price
Cloudflare Sandboxdevelopers
Shellboxshellbox
Pricing
- vCPU, per hour
- Cloudflare Sandbox: $0.072
- Shellbox: $0.01
- RAM, per GiB-hour
- Cloudflare Sandbox: $0.009
- Shellbox: Included
- Storage
- Cloudflare Sandbox: $0.000252 per GiB-hour
- Shellbox: A stopped box costs $0.50 per x1 slot per month
- Free tier
- Cloudflare Sandbox: None
- Shellbox: Not listed
- Paid plan from
- Cloudflare Sandbox: $5 / month
- Shellbox: Pay as you go
- Billing
- Cloudflare Sandbox: Active CPU time only
- Shellbox: Bundled machine time
Limits
- Max session
- Cloudflare Sandbox: Not listed
- Shellbox: No limit
- Idle stop
- Cloudflare Sandbox: Not listed
- Shellbox: After 2 minutes
- Largest sandbox
- Cloudflare Sandbox: 4 vCPU · 12 GiB
- Shellbox: 16 vCPU · 32 GiB
- Concurrent sandboxes
- Cloudflare Sandbox: Not listed
- Shellbox: Up to 16
Platform
- Isolation
- Cloudflare Sandbox: Firecracker microVM
- Shellbox: Firecracker microVM
- GPU
- Cloudflare Sandbox: Not listed
- Shellbox: Not listed
- Snapshots
- Cloudflare Sandbox:
- Shellbox:
- Pause and resume
- Cloudflare Sandbox: Not listed
- Shellbox:
Developer
- SDKs
- Cloudflare Sandbox: TypeScript
- Shellbox: Not listed
- Integrations
- Cloudflare Sandbox: Claude Code, OpenAI Agents SDK
- Shellbox: Claude Code
Trust
- License
- Cloudflare Sandbox: Not listed
- Shellbox: Not listed
- BYOC
- Cloudflare Sandbox: Not listed
- Shellbox: Not listed
Hourly cost
One sandbox running for one hour
Cloudflare Sandbox
Shellbox
- 1 vCPU · 2 GiB
- Cloudflare Sandbox: $0.090
- Shellbox: $0.010
- 2 vCPU · 4 GiB
- Cloudflare Sandbox: $0.180
- Shellbox: $0.020
- 4 vCPU · 8 GiB
- Cloudflare Sandbox: $0.360
- Shellbox: $0.040
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Cloudflare Sandbox fits when
- You use the OpenAI Agents SDK.
- Your code waits a lot: CPU is billed only while it is in use.
Shellbox fits when
- You want to pay only for usage, with no plan fee.
- You want the lower list price: $0.020 against $0.180 an hour for 2 vCPU and 4 GiB.
- You need pause and resume.
- You need a sandbox larger than 4 vCPU · 12 GiB.
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