Cua Fleets vs Smol Machines
Smol Machines costs $0.05 per vCPU-hour. Cua Fleets runs gVisor. Smol Machines runs microVMs.
Updated
Smol Machines
- Isolation
- MicroVM
- Free tier
- $100 credit, one time
- Max session
- Not listed
What is different
4 fields differ. The rest are the same or not listed.
Cua Fleets
Smol Machines
- Billing
- Cua Fleets: Per second
- Smol Machines: Active CPU time only
- Isolation
- Cua Fleets: gVisor
- Smol Machines: MicroVM
- Pause and resume
- Cua Fleets: No
- Smol Machines:
- SDKs
- Cua Fleets: Python, TypeScript, Rust
- Smol Machines: TypeScript, Python, Rust
Full comparison
18 fields, at each provider's list price
Cua Fleetscua
Smol Machinessmolmachines
Pricing
- vCPU, per hour
- Cua Fleets: Not listed
- Smol Machines: $0.05
- RAM, per GiB-hour
- Cua Fleets: Not listed
- Smol Machines: $0.0162
- Storage
- Cua Fleets: Not listed
- Smol Machines: $0.0001 per GiB-hour
- Free tier
- Cua Fleets: Not listed
- Smol Machines: $100 credit, one time
- Paid plan from
- Cua Fleets: Not listed
- Smol Machines: Pay as you go
- Billing
- Cua Fleets: Per second
- Smol Machines: Active CPU time only
Limits
- Max session
- Cua Fleets: Not listed
- Smol Machines: Not listed
- Idle stop
- Cua Fleets: Not listed
- Smol Machines: Not listed
- Largest sandbox
- Cua Fleets: Not listed
- Smol Machines: 32 vCPU · 32 GiB
- Concurrent sandboxes
- Cua Fleets: Not listed
- Smol Machines: Up to 1,000
Platform
- Isolation
- Cua Fleets: gVisor
- Smol Machines: MicroVM
- GPU
- Cua Fleets: Not listed
- Smol Machines: No
- Snapshots
- Cua Fleets: Not listed
- Smol Machines: No
- Pause and resume
- Cua Fleets: No
- Smol Machines:
Developer
- SDKs
- Cua Fleets: Python, TypeScript, Rust
- Smol Machines: TypeScript, Python, Rust
- Integrations
- Cua Fleets: OpenAI Agents SDK, MCP, Claude Code
- Smol Machines: Not listed
Trust
- License
- Cua Fleets: Not listed
- Smol Machines: Apache-2.0
- BYOC
- Cua Fleets: Your AWS, Google Cloud, or Modal account
- Smol Machines: Not listed
Hourly cost
One sandbox running for one hour
Cua Fleets
Smol Machines
- 1 vCPU · 2 GiB
- Cua Fleets: Not listed
- Smol Machines: $0.082
- 2 vCPU · 4 GiB
- Cua Fleets: Not listed
- Smol Machines: $0.165
- 4 vCPU · 8 GiB
- Cua Fleets: Not listed
- Smol Machines: $0.330
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Cua Fleets fits when
- You use the OpenAI Agents SDK, MCP or Claude Code.
- You need a desktop in the sandbox.
- You need the sandboxes in your own cloud account.
- You need SOC 2.
Smol Machines fits when
- You want each sandbox in its own microVM.
- You want an open-source platform (Apache-2.0) that you can self-host.
- You need pause and resume.
- Your code waits a lot: CPU is billed only while it is in use.
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