Cua Fleets vs Sailboxes

Cua Fleets costs $0.044625 per vCPU-hour and Sailboxes costs $0.015 per vCPU-hour. Cua Fleets runs gVisor. Sailboxes runs full VMs and has no session limit.

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

Sailboxes

Persistent Linux VMs for long-horizon AI agents.

Isolation: Full VM
Free tier: $5 credit every month
Max session: No limit

Visit site Sailboxes profile

What is different

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

Field

Cua Fleets

Sailboxes

vCPU, per hour: Cua Fleets: $0.044625; Sailboxes: $0.015
RAM, per GiB-hour: Cua Fleets: $0.0223125; Sailboxes: $0.008
Storage: Cua Fleets: Free; Sailboxes: $0.0007 per GiB-hour
Isolation: Cua Fleets: gVisor; Sailboxes: Full VM
Pause and resume: Cua Fleets: No; Sailboxes:
Integrations: Cua Fleets: OpenAI Agents SDK, MCP, Claude Code; Sailboxes: Claude Code

Full comparison

18 fields, at each provider's list price

Cua Fleetscua.ai/#pricing

Sailboxesdocs.sailresearch.com/sailboxes-pricingdocs.sailresearch.com

Pricing

vCPU, per hour: Cua Fleets: $0.044625; Sailboxes: $0.015
RAM, per GiB-hour: Cua Fleets: $0.0223125; Sailboxes: $0.008
Storage: Cua Fleets: Free; Sailboxes: $0.0007 per GiB-hour
Free tier: Cua Fleets: Not listed; Sailboxes: $5 credit every month
Paid plan from: Cua Fleets: Not listed; Sailboxes: Pay as you go
Billing: Cua Fleets: Per second; Sailboxes: Per second

Limits

Max session: Cua Fleets: Not listed; Sailboxes: No limit
Idle stop: Cua Fleets: Not listed; Sailboxes: Not listed
Largest sandbox: Cua Fleets: 8 vCPU · 32 GiB; Sailboxes: Not listed
Concurrent sandboxes: Cua Fleets: Not listed; Sailboxes: Up to 5,000

Platform

Isolation: Cua Fleets: gVisor; Sailboxes: Full VM
GPU: Cua Fleets: Not listed; Sailboxes: Not listed
Snapshots: Cua Fleets: Not listed; Sailboxes:
Pause and resume: Cua Fleets: No; Sailboxes:

Developer

SDKs: Cua Fleets: Python, TypeScript, Rust; Sailboxes: Python, TypeScript, Rust
Integrations: Cua Fleets: OpenAI Agents SDK, MCP, Claude Code; Sailboxes: Claude Code

Trust

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

Hourly cost

One sandbox running for one hour

Size

Cua Fleets

Sailboxes

1 vCPU · 2 GiB: Cua Fleets: $0.089; Sailboxes: $0.031
2 vCPU · 4 GiB: Cua Fleets: $0.179; Sailboxes: $0.062
4 vCPU · 8 GiB: Cua Fleets: $0.357; Sailboxes: $0.124

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.

Sailboxes fits when

You want each sandbox to be a full VM.
You want the lower list price: $0.062 against $0.179 an hour for 2 vCPU and 4 GiB.
You need snapshots.
You need pause and resume.

More comparisons

See all comparisons

Cua Fleets

Sailboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Cua Fleets fits when

Sailboxes fits when

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