Fly.io Sprites vs microsandbox cloud

Fly.io Sprites costs $0.0385 per vCPU-hour and microsandbox cloud costs $0.05 per vCPU-hour. Fly.io Sprites runs microVMs. microsandbox cloud runs microVMs.

Updated Oct 14, 2026

Fly.io Sprites

Persistent Linux computers that sleep when idle.

Isolation: MicroVM
Free tier: $30 trial credit
Max session: Not listed

Visit site Fly.io Sprites profile

microsandbox cloud

Hosted microVM sandboxes for AI agents and untrusted code.

Isolation: MicroVM
Free tier: Free plan, 5 computer-hours a month
Max session: Not listed

Visit site microsandbox cloud profile

What is different

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

Field

Fly.io Sprites

microsandbox cloud

vCPU, per hour: Fly.io Sprites: $0.0385; microsandbox cloud: $0.05
RAM, per GiB-hour: Fly.io Sprites: $0.021875; microsandbox cloud: $0.0162
Storage: Fly.io Sprites: $0.000683 per GiB-hour; microsandbox cloud: $0.0001 per GiB-hour
Free tier: Fly.io Sprites: $30 trial credit; microsandbox cloud: Free plan, 5 computer-hours a month
Paid plan from: Fly.io Sprites: Pay as you go; microsandbox cloud: $49 / month
Billing: Fly.io Sprites: Active CPU time only; microsandbox cloud: Per second
Pause and resume: Fly.io Sprites:; microsandbox cloud: No
SDKs: Fly.io Sprites: Python, JavaScript / TypeScript, Go; microsandbox cloud: Python, TypeScript, Rust, Go, Ruby

Full comparison

18 fields, at each provider's list price

Fly.io Spritesfly.io/pricing

microsandbox cloudmicrosandbox.dev/pricingmicrosandbox.dev

Pricing

vCPU, per hour: Fly.io Sprites: $0.0385; microsandbox cloud: $0.05
RAM, per GiB-hour: Fly.io Sprites: $0.021875; microsandbox cloud: $0.0162
Storage: Fly.io Sprites: $0.000683 per GiB-hour; microsandbox cloud: $0.0001 per GiB-hour
Free tier: Fly.io Sprites: $30 trial credit; microsandbox cloud: Free plan, 5 computer-hours a month
Paid plan from: Fly.io Sprites: Pay as you go; microsandbox cloud: $49 / month
Billing: Fly.io Sprites: Active CPU time only; microsandbox cloud: Per second

Limits

Max session: Fly.io Sprites: Not listed; microsandbox cloud: Not listed
Idle stop: Fly.io Sprites: Not listed; microsandbox cloud: Not listed
Largest sandbox: Fly.io Sprites: Not listed; microsandbox cloud: Not listed
Concurrent sandboxes: Fly.io Sprites: Not listed; microsandbox cloud: Up to 25,000

Platform

Isolation: Fly.io Sprites: MicroVM; microsandbox cloud: MicroVM
GPU: Fly.io Sprites: Not listed; microsandbox cloud: No
Snapshots: Fly.io Sprites:; microsandbox cloud:
Pause and resume: Fly.io Sprites:; microsandbox cloud: No

Developer

SDKs: Fly.io Sprites: Python, JavaScript / TypeScript, Go; microsandbox cloud: Python, TypeScript, Rust, Go, Ruby
Integrations: Fly.io Sprites: MCP, OpenAI Agents SDK; microsandbox cloud: Not listed

Trust

License: Fly.io Sprites: Not listed; microsandbox cloud: Apache-2.0
BYOC: Fly.io Sprites: Not listed; microsandbox cloud: Not listed

Hourly cost

One sandbox running for one hour

Size

Fly.io Sprites

microsandbox cloud

1 vCPU · 2 GiB: Fly.io Sprites: $0.082; microsandbox cloud: $0.082
2 vCPU · 4 GiB: Fly.io Sprites: $0.165; microsandbox cloud: $0.165
4 vCPU · 8 GiB: Fly.io Sprites: $0.329; microsandbox cloud: $0.330

Compute only, at list rates.

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Which one fits

Based on the fields above

Fly.io Sprites fits when

You want to pay only for usage, with no plan fee.
You use MCP or the OpenAI Agents SDK.
You want the lower list price: $0.165 against $0.165 an hour for 2 vCPU and 4 GiB.
You need pause and resume.

microsandbox cloud fits when

You want an open-source platform (Apache-2.0) that you can self-host.

More comparisons

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Fly.io Sprites

microsandbox cloud

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Fly.io Sprites fits when

microsandbox cloud fits when

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