Prime Sandboxes vs Runloop

Prime Sandboxes costs $0.02 per vCPU-hour and Runloop costs $0.108 per vCPU-hour. Prime Sandboxes runs microVMs and has no session limit. Runloop runs microVMs.

Updated

Prime Sandboxes

Isolation
MicroVM
Free tier
Not listed
Max session
No limit

Runloop

Isolation
MicroVM
Free tier
$50 credit
Max session
Not listed

What is different

4 fields differ. The rest are the same or not listed.

Prime Sandboxes
Runloop
vCPU, per hour
Prime Sandboxes: $0.02
Runloop: $0.108
RAM, per GiB-hour
Prime Sandboxes: $0.0125
Runloop: $0.0252
Storage
Prime Sandboxes: $0.0002 per GiB-hour
Runloop: $0.00034236 per GiB-hour
SDKs
Prime Sandboxes: Python
Runloop: Python, TypeScript

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Prime Sandboxes: $0.02
Runloop: $0.108
RAM, per GiB-hour
Prime Sandboxes: $0.0125
Runloop: $0.0252
Storage
Prime Sandboxes: $0.0002 per GiB-hour
Runloop: $0.00034236 per GiB-hour
Free tier
Prime Sandboxes: Not listed
Runloop: $50 credit
Paid plan from
Prime Sandboxes: Pay as you go
Runloop: Pay as you go
Billing
Prime Sandboxes: Per second
Runloop: Per second

Limits

Max session
Prime Sandboxes: No limit
Runloop: Not listed
Idle stop
Prime Sandboxes: Not listed
Runloop: Not listed
Largest sandbox
Prime Sandboxes: 16 vCPU · 64 GiB
Runloop: 16 vCPU · 64 GiB
Concurrent sandboxes
Prime Sandboxes: Up to 1,024
Runloop: Not listed

Platform

Isolation
Prime Sandboxes: MicroVM
Runloop: MicroVM
GPU
Prime Sandboxes: Not listed
Runloop: Not listed
Snapshots
Prime Sandboxes:
Runloop:
Pause and resume
Prime Sandboxes: Not listed
Runloop:

Developer

SDKs
Prime Sandboxes: Python
Runloop: Python, TypeScript
Integrations
Prime Sandboxes: Not listed
Runloop: OpenAI Agents SDK, MCP

Trust

License
Prime Sandboxes: Not listed
Runloop: Not listed
BYOC
Prime Sandboxes: Not listed
Runloop: Deploy to VPC, Enterprise plan

Hourly cost

One sandbox running for one hour

Prime Sandboxes
Runloop
1 vCPU · 2 GiB
Prime Sandboxes: $0.045
Runloop: $0.158
2 vCPU · 4 GiB
Prime Sandboxes: $0.090
Runloop: $0.317
4 vCPU · 8 GiB
Prime Sandboxes: $0.180
Runloop: $0.634

Compute only, at list rates.

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Which one fits

Based on the fields above

Prime Sandboxes fits when

  • You want the lower list price: $0.090 against $0.317 an hour for 2 vCPU and 4 GiB.

Runloop fits when

  • You use the OpenAI Agents SDK or MCP.
  • You need pause and resume.
  • You need a desktop in the sandbox.
  • You need the sandboxes in your own cloud account.

More comparisons

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