Cua Fleets vs Thunder Sandboxes

Cua Fleets costs $0.044625 per vCPU-hour and Thunder Sandboxes costs $0.051 per vCPU-hour. Cua Fleets runs gVisor. Thunder Sandboxes runs Firecracker microVMs and offers GPUs.

Updated Oct 14, 2026

Cua Fleets

Hosted Linux and Windows sandboxes for computer-use agents.

Isolation: gVisor
Free tier: Not listed
Max session: Not listed

Visit site Cua Fleets profile

Thunder Sandboxes

Isolated, short-lived sandboxes for agents, GPU optional.

Isolation: Firecracker microVM
Free tier: Not listed
Max session: Not listed

Visit site Thunder Sandboxes profile

What is different

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

Field

Cua Fleets

Thunder Sandboxes

vCPU, per hour: Cua Fleets: $0.044625; Thunder Sandboxes: $0.051
RAM, per GiB-hour: Cua Fleets: $0.0223125; Thunder Sandboxes: $0.016
Storage: Cua Fleets: Free; Thunder Sandboxes: $0.00012 per GiB-hour
Isolation: Cua Fleets: gVisor; Thunder Sandboxes: Firecracker microVM
SDKs: Cua Fleets: Python, TypeScript, Rust; Thunder Sandboxes: Python

Full comparison

18 fields, at each provider's list price

Cua Fleetscua.ai/#pricing

Thunder Sandboxesthundercompute.com/pricingthundercompute.com

Pricing

vCPU, per hour: Cua Fleets: $0.044625; Thunder Sandboxes: $0.051
RAM, per GiB-hour: Cua Fleets: $0.0223125; Thunder Sandboxes: $0.016
Storage: Cua Fleets: Free; Thunder Sandboxes: $0.00012 per GiB-hour
Free tier: Cua Fleets: Not listed; Thunder Sandboxes: Not listed
Paid plan from: Cua Fleets: Not listed; Thunder Sandboxes: Not listed
Billing: Cua Fleets: Per second; Thunder Sandboxes: Per second

Limits

Max session: Cua Fleets: Not listed; Thunder Sandboxes: Not listed
Idle stop: Cua Fleets: Not listed; Thunder Sandboxes: Not listed
Largest sandbox: Cua Fleets: 8 vCPU · 32 GiB; Thunder Sandboxes: Not listed
Concurrent sandboxes: Cua Fleets: Not listed; Thunder Sandboxes: Not listed

Platform

Isolation: Cua Fleets: gVisor; Thunder Sandboxes: Firecracker microVM
GPU: Cua Fleets: Not listed; Thunder Sandboxes:
Snapshots: Cua Fleets: Not listed; Thunder Sandboxes: Not listed
Pause and resume: Cua Fleets: No; Thunder Sandboxes: Not listed

Developer

SDKs: Cua Fleets: Python, TypeScript, Rust; Thunder Sandboxes: Python
Integrations: Cua Fleets: OpenAI Agents SDK, MCP; Thunder Sandboxes: Not listed

Trust

License: Cua Fleets: Not listed; Thunder Sandboxes: Not listed
BYOC: Cua Fleets: Your AWS, Google Cloud, or Modal account; Thunder Sandboxes: Not listed

Hourly cost

One sandbox running for one hour

Size

Cua Fleets

Thunder Sandboxes

1 vCPU · 2 GiB: Cua Fleets: $0.089; Thunder Sandboxes: $0.083
2 vCPU · 4 GiB: Cua Fleets: $0.179; Thunder Sandboxes: $0.166
4 vCPU · 8 GiB: Cua Fleets: $0.357; Thunder Sandboxes: $0.332

Compute only, at list rates.

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Which one fits

Based on the fields above

Cua Fleets fits when

You use the OpenAI Agents SDK or MCP.
You need a desktop in the sandbox.
You need the sandboxes in your own cloud account.
You need SOC 2.

Thunder Sandboxes fits when

You need GPUs.
You want each sandbox in its own microVM.
You want the lower list price: $0.166 against $0.179 an hour for 2 vCPU and 4 GiB.

More comparisons

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Cua Fleets

Thunder Sandboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Cua Fleets fits when

Thunder Sandboxes fits when

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