Cua Fleets vs Sendblue Sandboxes

Sendblue Sandboxes costs $0.165 per vCPU-hour. Cua Fleets runs gVisor. Sendblue Sandboxes runs containers.

Updated Oct 15, 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

Sendblue Sandboxes

Isolated cloud Linux machines that AI agents control over an HTTP API.

Isolation: Container
Free tier: $100 free compute, once per phone number
Max session: Not listed

Visit site Sendblue Sandboxes profile

What is different

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

Field

Cua Fleets

Sendblue Sandboxes

Billing: Cua Fleets: Per second; Sendblue Sandboxes: Bundled machine time
Isolation: Cua Fleets: gVisor; Sendblue Sandboxes: Container

Full comparison

18 fields, at each provider's list price

Cua Fleetscua.ai/#pricing

Sendblue Sandboxessendblue.com/sandboxessendblue.com

Pricing

vCPU, per hour: Cua Fleets: Not listed; Sendblue Sandboxes: $0.165
RAM, per GiB-hour: Cua Fleets: Not listed; Sendblue Sandboxes: Included
Storage: Cua Fleets: Not listed; Sendblue Sandboxes: Not listed
Free tier: Cua Fleets: Not listed; Sendblue Sandboxes: $100 free compute, once per phone number
Paid plan from: Cua Fleets: Not listed; Sendblue Sandboxes: Not listed
Billing: Cua Fleets: Per second; Sendblue Sandboxes: Bundled machine time

Limits

Max session: Cua Fleets: Not listed; Sendblue Sandboxes: Not listed
Idle stop: Cua Fleets: Not listed; Sendblue Sandboxes: After 10 minutes
Largest sandbox: Cua Fleets: Not listed; Sendblue Sandboxes: 2 vCPU · 8 GiB
Concurrent sandboxes: Cua Fleets: Not listed; Sendblue Sandboxes: Up to 5

Platform

Isolation: Cua Fleets: gVisor; Sendblue Sandboxes: Container
GPU: Cua Fleets: Not listed; Sendblue Sandboxes: Not listed
Snapshots: Cua Fleets: Not listed; Sendblue Sandboxes: Not listed
Pause and resume: Cua Fleets: No; Sendblue Sandboxes: No

Developer

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

Trust

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

Hourly cost

One sandbox running for one hour

Size

Cua Fleets

Sendblue Sandboxes

1 vCPU · 2 GiB: Cua Fleets: Not listed; Sendblue Sandboxes: $0.165
2 vCPU · 4 GiB: Cua Fleets: Not listed; Sendblue Sandboxes: $0.330
4 vCPU · 8 GiB: Cua Fleets: Not listed; Sendblue Sandboxes: $0.660

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, MCP or Claude Code.
You need a desktop in the sandbox.
You need the sandboxes in your own cloud account.
You need SOC 2.

More comparisons

See all comparisons

Cua Fleets

Sendblue Sandboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Cua Fleets fits when

More comparisons

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