Runloop vs Thunder Sandboxes

Runloop costs $0.108 per vCPU-hour and Thunder Sandboxes costs $0.051 per vCPU-hour. Runloop runs microVMs. Thunder Sandboxes runs Firecracker microVMs and offers GPUs.

Updated

Runloop

Isolation
MicroVM
Free tier
$50 credit
Max session
Not listed

Thunder Sandboxes

Isolation
Firecracker microVM
Free tier
Not listed
Max session
Not listed

What is different

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

Runloop
Thunder Sandboxes
vCPU, per hour
Runloop: $0.108
Thunder Sandboxes: $0.051
RAM, per GiB-hour
Runloop: $0.0252
Thunder Sandboxes: $0.016
Storage
Runloop: $0.00034236 per GiB-hour
Thunder Sandboxes: $0.00012 per GiB-hour
Isolation
Runloop: MicroVM
Thunder Sandboxes: Firecracker microVM
SDKs
Runloop: Python, TypeScript
Thunder Sandboxes: Python

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Runloop: $0.108
Thunder Sandboxes: $0.051
RAM, per GiB-hour
Runloop: $0.0252
Thunder Sandboxes: $0.016
Storage
Runloop: $0.00034236 per GiB-hour
Thunder Sandboxes: $0.00012 per GiB-hour
Free tier
Runloop: $50 credit
Thunder Sandboxes: Not listed
Paid plan from
Runloop: Pay as you go
Thunder Sandboxes: Not listed
Billing
Runloop: Per second
Thunder Sandboxes: Per second

Limits

Max session
Runloop: Not listed
Thunder Sandboxes: Not listed
Idle stop
Runloop: Not listed
Thunder Sandboxes: Not listed
Largest sandbox
Runloop: 16 vCPU · 64 GiB
Thunder Sandboxes: Not listed
Concurrent sandboxes
Runloop: Not listed
Thunder Sandboxes: Not listed

Platform

Isolation
Runloop: MicroVM
Thunder Sandboxes: Firecracker microVM
GPU
Runloop: Not listed
Thunder Sandboxes:
Snapshots
Runloop:
Thunder Sandboxes: Not listed
Pause and resume
Runloop:
Thunder Sandboxes: Not listed

Developer

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

Trust

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

Hourly cost

One sandbox running for one hour

Runloop
Thunder Sandboxes
1 vCPU · 2 GiB
Runloop: $0.158
Thunder Sandboxes: $0.083
2 vCPU · 4 GiB
Runloop: $0.317
Thunder Sandboxes: $0.166
4 vCPU · 8 GiB
Runloop: $0.634
Thunder Sandboxes: $0.332

Compute only, at list rates.

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Which one fits

Based on the fields above

Runloop fits when

  • You use the OpenAI Agents SDK or MCP.
  • You need snapshots.
  • You need pause and resume.
  • You need a desktop in the sandbox.

Thunder Sandboxes fits when

  • You need GPUs.
  • You want the lower list price: $0.166 against $0.317 an hour for 2 vCPU and 4 GiB.

More comparisons

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