Fly.io Sprites vs Sandock

Fly.io Sprites costs $0.0385 per vCPU-hour. Fly.io Sprites runs microVMs. Sandock runs containers and limits a session to 24 hours.

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

Sandock

Docker sandboxes with persistent volumes for AI agents.

Isolation: Container
Free tier: None
Max session: 24 hours

Visit site Sandock profile

What is different

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

Field

Fly.io Sprites

Sandock

Free tier: Fly.io Sprites: $30 trial credit; Sandock: None
Paid plan from: Fly.io Sprites: Pay as you go; Sandock: $5 / month
Isolation: Fly.io Sprites: MicroVM; Sandock: Container
SDKs: Fly.io Sprites: Python, JavaScript / TypeScript, Go; Sandock: JavaScript / TypeScript, Python
Integrations: Fly.io Sprites: MCP, OpenAI Agents SDK; Sandock: MCP

Full comparison

18 fields, at each provider's list price

Fly.io Spritesfly.io/pricing

Sandocksandock.ai/pricing

Pricing

vCPU, per hour: Fly.io Sprites: $0.0385; Sandock: Not listed
RAM, per GiB-hour: Fly.io Sprites: $0.021875; Sandock: Not listed
Storage: Fly.io Sprites: $0.000683 per GiB-hour; Sandock: Not listed
Free tier: Fly.io Sprites: $30 trial credit; Sandock: None
Paid plan from: Fly.io Sprites: Pay as you go; Sandock: $5 / month
Billing: Fly.io Sprites: Active CPU time only; Sandock: Not listed

Limits

Max session: Fly.io Sprites: Not listed; Sandock: 24 hours
Idle stop: Fly.io Sprites: Not listed; Sandock: After 30 minutes
Largest sandbox: Fly.io Sprites: Not listed; Sandock: 16 vCPU · 8 GiB
Concurrent sandboxes: Fly.io Sprites: Not listed; Sandock: Up to 150

Platform

Isolation: Fly.io Sprites: MicroVM; Sandock: Container
GPU: Fly.io Sprites: Not listed; Sandock: Not listed
Snapshots: Fly.io Sprites:; Sandock: Not listed
Pause and resume: Fly.io Sprites:; Sandock:

Developer

SDKs: Fly.io Sprites: Python, JavaScript / TypeScript, Go; Sandock: JavaScript / TypeScript, Python
Integrations: Fly.io Sprites: MCP, OpenAI Agents SDK; Sandock: MCP

Trust

License: Fly.io Sprites: Not listed; Sandock: Not listed
BYOC: Fly.io Sprites: Not listed; Sandock: Private / VPC deployment on Enterprise

Hourly cost

One sandbox running for one hour

Size

Fly.io Sprites

Sandock

1 vCPU · 2 GiB: Fly.io Sprites: $0.082; Sandock: Not listed
2 vCPU · 4 GiB: Fly.io Sprites: $0.165; Sandock: Not listed
4 vCPU · 8 GiB: Fly.io Sprites: $0.329; Sandock: Not listed

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 want each sandbox in its own microVM.
You use the OpenAI Agents SDK.
You want to start without paying.

Sandock fits when

You need the sandboxes in your own cloud account.

More comparisons

See all comparisons

Fly.io Sprites

Sandock

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Fly.io Sprites fits when

Sandock fits when

More comparisons

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