Cua Fleets vs Deno Sandbox

Cua Fleets costs $0.044625 per vCPU-hour and Deno Sandbox costs $0.10 per vCPU-hour. Cua Fleets runs gVisor. Deno Sandbox runs Firecracker microVMs and limits a session to 30 minutes.

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

Deno Sandbox

Linux microVMs for running untrusted and generated code.

Isolation: Firecracker microVM
Free tier: Not listed
Max session: 30 minutes

Visit site Deno Sandbox profile

What is different

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

Field

Cua Fleets

Deno Sandbox

vCPU, per hour: Cua Fleets: $0.044625; Deno Sandbox: $0.10
RAM, per GiB-hour: Cua Fleets: $0.0223125; Deno Sandbox: $0.025
Storage: Cua Fleets: Free; Deno Sandbox: Volumes $0.20 per GiB-month after plan allowance. Volumes 300 MB to 20 GB.
Billing: Cua Fleets: Per second; Deno Sandbox: Active CPU time only
Largest sandbox: Cua Fleets: 8 vCPU · 32 GiB; Deno Sandbox: 2 vCPU · 4 GiB
Isolation: Cua Fleets: gVisor; Deno Sandbox: Firecracker microVM
SDKs: Cua Fleets: Python, TypeScript, Rust; Deno Sandbox: JavaScript / TypeScript, Python

Full comparison

18 fields, at each provider's list price

Cua Fleetscua.ai/#pricing

Deno Sandboxdeno.com/deploy/sandboxdeno.com

Pricing

vCPU, per hour: Cua Fleets: $0.044625; Deno Sandbox: $0.10
RAM, per GiB-hour: Cua Fleets: $0.0223125; Deno Sandbox: $0.025
Storage: Cua Fleets: Free; Deno Sandbox: Volumes $0.20 per GiB-month after plan allowance. Volumes 300 MB to 20 GB.
Free tier: Cua Fleets: Not listed; Deno Sandbox: Not listed
Paid plan from: Cua Fleets: Not listed; Deno Sandbox: $20 / month
Billing: Cua Fleets: Per second; Deno Sandbox: Active CPU time only

Limits

Max session: Cua Fleets: Not listed; Deno Sandbox: 30 minutes
Idle stop: Cua Fleets: Not listed; Deno Sandbox: Not listed
Largest sandbox: Cua Fleets: 8 vCPU · 32 GiB; Deno Sandbox: 2 vCPU · 4 GiB
Concurrent sandboxes: Cua Fleets: Not listed; Deno Sandbox: Up to 20

Platform

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

Developer

SDKs: Cua Fleets: Python, TypeScript, Rust; Deno Sandbox: JavaScript / TypeScript, Python
Integrations: Cua Fleets: OpenAI Agents SDK, MCP; Deno Sandbox: Not listed

Trust

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

Hourly cost

One sandbox running for one hour

Size

Cua Fleets

Deno Sandbox

1 vCPU · 2 GiB: Cua Fleets: $0.089; Deno Sandbox: $0.150
2 vCPU · 4 GiB: Cua Fleets: $0.179; Deno Sandbox: $0.300
4 vCPU · 8 GiB: Cua Fleets: $0.357; Deno Sandbox: $0.600

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 want the lower list price: $0.179 against $0.300 an hour for 2 vCPU and 4 GiB.
You need a desktop in the sandbox.
You need the sandboxes in your own cloud account.

Deno Sandbox fits when

You want each sandbox in its own microVM.
You need snapshots.
Your code waits a lot: CPU is billed only while it is in use.
You need ISO 27001 and HIPAA.

More comparisons

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Cua Fleets

Deno Sandbox

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Cua Fleets fits when

Deno Sandbox fits when

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