Cua Fleets vs Docker Sandboxes

Cua Fleets costs $0.044625 per vCPU-hour and Docker Sandboxes costs $0.07 per vCPU-hour. Cua Fleets runs gVisor. Docker Sandboxes runs microVMs.

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

Docker Sandboxes

Cloud microVM sandboxes for coding agents, run by Docker.

Isolation: MicroVM
Free tier: One-time promotional credit for cloud compute
Max session: Not listed

Visit site Docker Sandboxes profile

What is different

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

Field

Cua Fleets

Docker Sandboxes

vCPU, per hour: Cua Fleets: $0.044625; Docker Sandboxes: $0.07
RAM, per GiB-hour: Cua Fleets: $0.0223125; Docker Sandboxes: Included
Billing: Cua Fleets: Per second; Docker Sandboxes: Bundled machine time
Largest sandbox: Cua Fleets: 8 vCPU · 32 GiB; Docker Sandboxes: 16 vCPU · 32 GiB
Isolation: Cua Fleets: gVisor; Docker Sandboxes: MicroVM
Pause and resume: Cua Fleets: No; Docker Sandboxes:
SDKs: Cua Fleets: Python, TypeScript, Rust; Docker Sandboxes: JavaScript / TypeScript
Integrations: Cua Fleets: OpenAI Agents SDK, MCP; Docker Sandboxes: MCP

Full comparison

18 fields, at each provider's list price

Cua Fleetscua.ai/#pricing

Docker Sandboxesdocker.com/products/docker-sandboxesdocker.com

Pricing

vCPU, per hour: Cua Fleets: $0.044625; Docker Sandboxes: $0.07
RAM, per GiB-hour: Cua Fleets: $0.0223125; Docker Sandboxes: Included
Storage: Cua Fleets: Free; Docker Sandboxes: Not listed
Free tier: Cua Fleets: Not listed; Docker Sandboxes: One-time promotional credit for cloud compute
Paid plan from: Cua Fleets: Not listed; Docker Sandboxes: Pay as you go
Billing: Cua Fleets: Per second; Docker Sandboxes: Bundled machine time

Limits

Max session: Cua Fleets: Not listed; Docker Sandboxes: Not listed
Idle stop: Cua Fleets: Not listed; Docker Sandboxes: Not listed
Largest sandbox: Cua Fleets: 8 vCPU · 32 GiB; Docker Sandboxes: 16 vCPU · 32 GiB
Concurrent sandboxes: Cua Fleets: Not listed; Docker Sandboxes: Up to 10

Platform

Isolation: Cua Fleets: gVisor; Docker Sandboxes: MicroVM
GPU: Cua Fleets: Not listed; Docker Sandboxes: Not listed
Snapshots: Cua Fleets: Not listed; Docker Sandboxes:
Pause and resume: Cua Fleets: No; Docker Sandboxes:

Developer

SDKs: Cua Fleets: Python, TypeScript, Rust; Docker Sandboxes: JavaScript / TypeScript
Integrations: Cua Fleets: OpenAI Agents SDK, MCP; Docker Sandboxes: MCP

Trust

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

Hourly cost

One sandbox running for one hour

Size

Cua Fleets

Docker Sandboxes

1 vCPU · 2 GiB: Cua Fleets: $0.089; Docker Sandboxes: $0.070
2 vCPU · 4 GiB: Cua Fleets: $0.179; Docker Sandboxes: $0.140
4 vCPU · 8 GiB: Cua Fleets: $0.357; Docker Sandboxes: $0.280

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.
You need a desktop in the sandbox.
You need the sandboxes in your own cloud account.
You need SOC 2.

Docker Sandboxes fits when

You want each sandbox in its own microVM.
You want the lower list price: $0.140 against $0.179 an hour for 2 vCPU and 4 GiB.
You need snapshots.
You need pause and resume.

More comparisons

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Cua Fleets

Docker Sandboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Cua Fleets fits when

Docker Sandboxes fits when

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