Cua Fleets vs Shardflux

Shardflux costs $0.04 per vCPU-hour. Cua Fleets runs gVisor. Shardflux runs Firecracker microVMs and offers GPUs.

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

Shardflux

Serverless VMs for cloud agents that park when idle and keep their state.

Isolation: Firecracker microVM
Free tier: 30-day Pro trial, no card needed
Max session: Not listed

Visit site Shardflux profile

What is different

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

Field

Cua Fleets

Shardflux

Billing: Cua Fleets: Per second; Shardflux: Active CPU time only
Isolation: Cua Fleets: gVisor; Shardflux: Firecracker microVM
Pause and resume: Cua Fleets: No; Shardflux:
SDKs: Cua Fleets: Python, TypeScript, Rust; Shardflux: TypeScript, Python
Integrations: Cua Fleets: OpenAI Agents SDK, MCP, Claude Code; Shardflux: Claude Code, MCP

Full comparison

18 fields, at each provider's list price

Cua Fleetscua.ai/#pricing

Shardfluxshardflux.dev/#pricingshardflux.dev

Pricing

vCPU, per hour: Cua Fleets: Not listed; Shardflux: $0.04
RAM, per GiB-hour: Cua Fleets: Not listed; Shardflux: $0.015
Storage: Cua Fleets: Not listed; Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
Free tier: Cua Fleets: Not listed; Shardflux: 30-day Pro trial, no card needed
Paid plan from: Cua Fleets: Not listed; Shardflux: $9 / month
Billing: Cua Fleets: Per second; Shardflux: Active CPU time only

Limits

Max session: Cua Fleets: Not listed; Shardflux: Not listed
Idle stop: Cua Fleets: Not listed; Shardflux: Not listed
Largest sandbox: Cua Fleets: Not listed; Shardflux: 32 vCPU · 64 GiB
Concurrent sandboxes: Cua Fleets: Not listed; Shardflux: Up to 200

Platform

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

Developer

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

Trust

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

Hourly cost

One sandbox running for one hour

Size

Cua Fleets

Shardflux

1 vCPU · 2 GiB: Cua Fleets: Not listed; Shardflux: $0.070
2 vCPU · 4 GiB: Cua Fleets: Not listed; Shardflux: $0.140
4 vCPU · 8 GiB: Cua Fleets: Not listed; Shardflux: $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 the sandboxes in your own cloud account.
You need SOC 2.

Shardflux fits when

You need GPUs.
You want each sandbox in its own microVM.
You need snapshots.
You need pause and resume.

More comparisons

See all comparisons

Cua Fleets

Shardflux

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Cua Fleets fits when

Shardflux fits when

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