Mosaic Sandbox vs Smol Machines
Mosaic Sandbox costs $0.025 per vCPU-hour and Smol Machines costs $0.05 per vCPU-hour. Mosaic Sandbox runs Firecracker microVMs. Smol Machines runs microVMs.
Updated
Mosaic Sandbox
- Isolation
- Firecracker microVM
- Free tier
- Not listed
- Max session
- Not listed
Smol Machines
- Isolation
- MicroVM
- Free tier
- $100 credit, one time
- Max session
- Not listed
What is different
9 fields differ. The rest are the same or not listed.
Mosaic Sandbox
Smol Machines
- vCPU, per hour
- Mosaic Sandbox: $0.025
- Smol Machines: $0.05
- RAM, per GiB-hour
- Mosaic Sandbox: Included
- Smol Machines: $0.0162
- Storage
- Mosaic Sandbox: Free
- Smol Machines: $0.0001 per GiB-hour
- Billing
- Mosaic Sandbox: Bundled machine time
- Smol Machines: Active CPU time only
- Largest sandbox
- Mosaic Sandbox: 16 vCPU · 32 GiB
- Smol Machines: 32 vCPU · 32 GiB
- Concurrent sandboxes
- Mosaic Sandbox: Up to 200
- Smol Machines: Up to 1,000
- Isolation
- Mosaic Sandbox: Firecracker microVM
- Smol Machines: MicroVM
- Snapshots
- Mosaic Sandbox:
- Smol Machines: No
- SDKs
- Mosaic Sandbox: Python, TypeScript, Go
- Smol Machines: TypeScript, Python, Rust
Full comparison
18 fields, at each provider's list price
Mosaic Sandboxsandbox
Smol Machinessmolmachines
Pricing
- vCPU, per hour
- Mosaic Sandbox: $0.025
- Smol Machines: $0.05
- RAM, per GiB-hour
- Mosaic Sandbox: Included
- Smol Machines: $0.0162
- Storage
- Mosaic Sandbox: Free
- Smol Machines: $0.0001 per GiB-hour
- Free tier
- Mosaic Sandbox: Not listed
- Smol Machines: $100 credit, one time
- Paid plan from
- Mosaic Sandbox: Pay as you go
- Smol Machines: Pay as you go
- Billing
- Mosaic Sandbox: Bundled machine time
- Smol Machines: Active CPU time only
Limits
- Max session
- Mosaic Sandbox: Not listed
- Smol Machines: Not listed
- Idle stop
- Mosaic Sandbox: Not listed
- Smol Machines: Not listed
- Largest sandbox
- Mosaic Sandbox: 16 vCPU · 32 GiB
- Smol Machines: 32 vCPU · 32 GiB
- Concurrent sandboxes
- Mosaic Sandbox: Up to 200
- Smol Machines: Up to 1,000
Platform
- Isolation
- Mosaic Sandbox: Firecracker microVM
- Smol Machines: MicroVM
- GPU
- Mosaic Sandbox: No
- Smol Machines: No
- Snapshots
- Mosaic Sandbox:
- Smol Machines: No
- Pause and resume
- Mosaic Sandbox:
- Smol Machines:
Developer
- SDKs
- Mosaic Sandbox: Python, TypeScript, Go
- Smol Machines: TypeScript, Python, Rust
- Integrations
- Mosaic Sandbox: LangChain, MCP, Claude Code, Vercel AI SDK
- Smol Machines: Not listed
Trust
- License
- Mosaic Sandbox: Not listed
- Smol Machines: Apache-2.0
- BYOC
- Mosaic Sandbox: Not listed
- Smol Machines: Not listed
Hourly cost
One sandbox running for one hour
Mosaic Sandbox
Smol Machines
- 1 vCPU · 2 GiB
- Mosaic Sandbox: $0.025
- Smol Machines: $0.082
- 2 vCPU · 4 GiB
- Mosaic Sandbox: $0.050
- Smol Machines: $0.165
- 4 vCPU · 8 GiB
- Mosaic Sandbox: $0.100
- Smol Machines: $0.330
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Mosaic Sandbox fits when
- You use LangChain, MCP, Claude Code or the Vercel AI SDK.
- You want the lower list price: $0.050 against $0.165 an hour for 2 vCPU and 4 GiB.
- You need snapshots.
Smol Machines fits when
- You want an open-source platform (Apache-2.0) that you can self-host.
- Your code waits a lot: CPU is billed only while it is in use.
- You need a sandbox larger than 16 vCPU · 32 GiB.
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