Smol Machines vs Solari

Smol Machines costs $0.05 per vCPU-hour and Solari costs $0.0525 per vCPU-hour. Smol Machines runs microVMs. Solari runs Cloud Hypervisor microVMs and limits a session to 24 hours.

Updated Oct 23, 2026

Smol Machines

Hosted Linux microVMs with their own kernel, for agents and untrusted code.

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

Visit site Smol Machines profile

Solari

One API for cloud browsers, headless microVM sandboxes and desktop VMs for AI agents.

Isolation: Cloud Hypervisor microVM
Free tier: $3 credit every month
Max session: 24 hours

Visit site Solari profile

What is different

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

Field

Smol Machines

Solari

vCPU, per hour: Smol Machines: $0.05; Solari: $0.0525
RAM, per GiB-hour: Smol Machines: $0.0162; Solari: $0.0165
Storage: Smol Machines: $0.0001 per GiB-hour; Solari: Snapshots $0.05 per GB-month, the first 10 GB per organization free, from October 1, 2026.
Free tier: Smol Machines: $100 credit, one time; Solari: $3 credit every month
Paid plan from: Smol Machines: Pay as you go; Solari: $20 / month
Billing: Smol Machines: Active CPU time only; Solari: Per second
Largest sandbox: Smol Machines: 32 vCPU · 32 GiB; Solari: 8 vCPU · 16 GiB
Concurrent sandboxes: Smol Machines: Up to 1,000; Solari: Up to 10
Isolation: Smol Machines: MicroVM; Solari: Cloud Hypervisor microVM
SDKs: Smol Machines: TypeScript, Python, Rust, Go; Solari: TypeScript, Python, Go, Rust
Integrations: Smol Machines: MCP; Solari: MCP, Claude Code

Full comparison

18 fields, at each provider's list price

Smol Machinessmolmachines.com/pricingsmolmachines.com

Solaridocs.getsolari.com/pricingdocs.getsolari.com

Pricing

vCPU, per hour: Smol Machines: $0.05; Solari: $0.0525
RAM, per GiB-hour: Smol Machines: $0.0162; Solari: $0.0165
Storage: Smol Machines: $0.0001 per GiB-hour; Solari: Snapshots $0.05 per GB-month, the first 10 GB per organization free, from October 1, 2026.
Free tier: Smol Machines: $100 credit, one time; Solari: $3 credit every month
Paid plan from: Smol Machines: Pay as you go; Solari: $20 / month
Billing: Smol Machines: Active CPU time only; Solari: Per second

Limits

Max session: Smol Machines: Not listed; Solari: 24 hours
Idle stop: Smol Machines: Not listed; Solari: Not listed
Largest sandbox: Smol Machines: 32 vCPU · 32 GiB; Solari: 8 vCPU · 16 GiB
Concurrent sandboxes: Smol Machines: Up to 1,000; Solari: Up to 10

Platform

Isolation: Smol Machines: MicroVM; Solari: Cloud Hypervisor microVM
GPU: Smol Machines: No; Solari: Not listed
Snapshots: Smol Machines:; Solari:
Pause and resume: Smol Machines:; Solari:

Developer

SDKs: Smol Machines: TypeScript, Python, Rust, Go; Solari: TypeScript, Python, Go, Rust
Integrations: Smol Machines: MCP; Solari: MCP, Claude Code

Trust

License: Smol Machines: Apache-2.0; Solari: Not listed
BYOC: Smol Machines: Not listed; Solari: Enterprise plan, in your own VPC

Hourly cost

One sandbox running for one hour

Size

Smol Machines

Solari

1 vCPU · 2 GiB: Smol Machines: $0.082; Solari: $0.086
2 vCPU · 4 GiB: Smol Machines: $0.165; Solari: $0.171
4 vCPU · 8 GiB: Smol Machines: $0.330; Solari: $0.342

Compute only, at list rates.

Open the calculator

Which one fits

Based on the fields above

Smol Machines fits when

You want to pay only for usage, with no plan fee.
You want an open-source platform (Apache-2.0) that you can self-host.
You want the lower list price: $0.165 against $0.171 an hour for 2 vCPU and 4 GiB.
You want the larger free credit: $100 against $3.

Solari fits when

You use Claude Code.
You need a desktop in the sandbox.
You need the sandboxes in your own cloud account.
You need HIPAA.

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Smol Machines

Solari

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Smol Machines fits when

Solari fits when

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