Freestyle VMs vs Prime Sandboxes
Freestyle VMs costs $0.04032 per vCPU-hour and Prime Sandboxes costs $0.02 per vCPU-hour. Freestyle VMs runs full VMs. Prime Sandboxes runs microVMs and has no session limit.
Updated
Freestyle VMs
- Isolation
- Full VM
- Free tier
- Free plan, $0 forever
- Max session
- Not listed
Prime Sandboxes
- Isolation
- MicroVM
- Free tier
- Not listed
- Max session
- No limit
What is different
8 fields differ. The rest are the same or not listed.
Freestyle VMs
Prime Sandboxes
- vCPU, per hour
- Freestyle VMs: $0.04032
- Prime Sandboxes: $0.02
- RAM, per GiB-hour
- Freestyle VMs: $0.0129
- Prime Sandboxes: $0.0125
- Storage
- Freestyle VMs: $0.000086 per GiB-hour
- Prime Sandboxes: $0.0002 per GiB-hour
- Paid plan from
- Freestyle VMs: $50 / month
- Prime Sandboxes: Pay as you go
- Largest sandbox
- Freestyle VMs: 32 vCPU · 64 GiB
- Prime Sandboxes: 16 vCPU · 64 GiB
- Concurrent sandboxes
- Freestyle VMs: Up to 400
- Prime Sandboxes: Up to 1,024
- Isolation
- Freestyle VMs: Full VM
- Prime Sandboxes: MicroVM
- SDKs
- Freestyle VMs: JavaScript
- Prime Sandboxes: Python
Full comparison
18 fields, at each provider's list price
Freestyle VMsfreestyle
Prime Sandboxesdocs
Pricing
- vCPU, per hour
- Freestyle VMs: $0.04032
- Prime Sandboxes: $0.02
- RAM, per GiB-hour
- Freestyle VMs: $0.0129
- Prime Sandboxes: $0.0125
- Storage
- Freestyle VMs: $0.000086 per GiB-hour
- Prime Sandboxes: $0.0002 per GiB-hour
- Free tier
- Freestyle VMs: Free plan, $0 forever
- Prime Sandboxes: Not listed
- Paid plan from
- Freestyle VMs: $50 / month
- Prime Sandboxes: Pay as you go
- Billing
- Freestyle VMs: Per second
- Prime Sandboxes: Per second
Limits
- Max session
- Freestyle VMs: Not listed
- Prime Sandboxes: No limit
- Idle stop
- Freestyle VMs: Not listed
- Prime Sandboxes: Not listed
- Largest sandbox
- Freestyle VMs: 32 vCPU · 64 GiB
- Prime Sandboxes: 16 vCPU · 64 GiB
- Concurrent sandboxes
- Freestyle VMs: Up to 400
- Prime Sandboxes: Up to 1,024
Platform
- Isolation
- Freestyle VMs: Full VM
- Prime Sandboxes: MicroVM
- GPU
- Freestyle VMs: Not listed
- Prime Sandboxes: Not listed
- Snapshots
- Freestyle VMs:
- Prime Sandboxes:
- Pause and resume
- Freestyle VMs:
- Prime Sandboxes: Not listed
Developer
- SDKs
- Freestyle VMs: JavaScript
- Prime Sandboxes: Python
- Integrations
- Freestyle VMs: OpenAI Agents SDK, Claude Agent SDK, Claude Code
- Prime Sandboxes: Not listed
Trust
- License
- Freestyle VMs: Not listed
- Prime Sandboxes: Not listed
- BYOC
- Freestyle VMs: Not listed
- Prime Sandboxes: Not listed
Hourly cost
One sandbox running for one hour
Freestyle VMs
Prime Sandboxes
- 1 vCPU · 2 GiB
- Freestyle VMs: $0.066
- Prime Sandboxes: $0.045
- 2 vCPU · 4 GiB
- Freestyle VMs: $0.132
- Prime Sandboxes: $0.090
- 4 vCPU · 8 GiB
- Freestyle VMs: $0.264
- Prime Sandboxes: $0.180
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Freestyle VMs fits when
- You want each sandbox to be a full VM.
- You use the OpenAI Agents SDK, the Claude Agent SDK or Claude Code.
- You need pause and resume.
- You need a desktop in the sandbox.
Prime Sandboxes fits when
- You want to pay only for usage, with no plan fee.
- You want each sandbox in its own microVM.
- You want the lower list price: $0.090 against $0.132 an hour for 2 vCPU and 4 GiB.
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