Smol Machines vs Thunder Sandboxes

Smol Machines costs $0.05 per vCPU-hour and Thunder Sandboxes costs $0.051 per vCPU-hour. Smol Machines runs microVMs. Thunder Sandboxes runs Firecracker microVMs and offers GPUs.

Updated

Smol Machines

Isolation
MicroVM
Free tier
$100 credit, one time
Max session
Not listed

Thunder Sandboxes

Isolation
Firecracker microVM
Free tier
Not listed
Max session
Not listed

What is different

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

Smol Machines
Thunder Sandboxes
vCPU, per hour
Smol Machines: $0.05
Thunder Sandboxes: $0.051
RAM, per GiB-hour
Smol Machines: $0.0162
Thunder Sandboxes: $0.016
Storage
Smol Machines: $0.0001 per GiB-hour
Thunder Sandboxes: $0.00012 per GiB-hour
Billing
Smol Machines: Active CPU time only
Thunder Sandboxes: Per second
Isolation
Smol Machines: MicroVM
Thunder Sandboxes: Firecracker microVM
GPU
Smol Machines: No
Thunder Sandboxes:
SDKs
Smol Machines: TypeScript, Python, Rust
Thunder Sandboxes: Python

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Smol Machines: $0.05
Thunder Sandboxes: $0.051
RAM, per GiB-hour
Smol Machines: $0.0162
Thunder Sandboxes: $0.016
Storage
Smol Machines: $0.0001 per GiB-hour
Thunder Sandboxes: $0.00012 per GiB-hour
Free tier
Smol Machines: $100 credit, one time
Thunder Sandboxes: Not listed
Paid plan from
Smol Machines: Pay as you go
Thunder Sandboxes: Not listed
Billing
Smol Machines: Active CPU time only
Thunder Sandboxes: Per second

Limits

Max session
Smol Machines: Not listed
Thunder Sandboxes: Not listed
Idle stop
Smol Machines: Not listed
Thunder Sandboxes: Not listed
Largest sandbox
Smol Machines: 32 vCPU · 32 GiB
Thunder Sandboxes: Not listed
Concurrent sandboxes
Smol Machines: Up to 1,000
Thunder Sandboxes: Not listed

Platform

Isolation
Smol Machines: MicroVM
Thunder Sandboxes: Firecracker microVM
GPU
Smol Machines: No
Thunder Sandboxes:
Snapshots
Smol Machines: No
Thunder Sandboxes: Not listed
Pause and resume
Smol Machines:
Thunder Sandboxes: Not listed

Developer

SDKs
Smol Machines: TypeScript, Python, Rust
Thunder Sandboxes: Python
Integrations
Smol Machines: Not listed
Thunder Sandboxes: MCP

Trust

License
Smol Machines: Apache-2.0
Thunder Sandboxes: Not listed
BYOC
Smol Machines: Not listed
Thunder Sandboxes: Not listed

Hourly cost

One sandbox running for one hour

Smol Machines
Thunder Sandboxes
1 vCPU · 2 GiB
Smol Machines: $0.082
Thunder Sandboxes: $0.083
2 vCPU · 4 GiB
Smol Machines: $0.165
Thunder Sandboxes: $0.166
4 vCPU · 8 GiB
Smol Machines: $0.330
Thunder Sandboxes: $0.332

Compute only, at list rates.

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Which one fits

Based on the fields above

Smol Machines fits when

  • You want an open-source platform (Apache-2.0) that you can self-host.
  • You want the lower list price: $0.165 against $0.166 an hour for 2 vCPU and 4 GiB.
  • You need pause and resume.
  • Your code waits a lot: CPU is billed only while it is in use.

Thunder Sandboxes fits when

  • You need GPUs.
  • You use MCP.

More comparisons

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