Bunny Sandbox vs Fly.io Sprites

Bunny Sandbox costs $0.02 per vCPU-hour and Fly.io Sprites costs $0.0385 per vCPU-hour. Bunny Sandbox runs gVisor. Fly.io Sprites runs microVMs.

Updated Oct 14, 2026

Bunny Sandbox

Isolated cloud sandboxes for AI agents, run on gVisor.

Isolation: gVisor
Free tier: Not listed
Max session: Not listed

Visit site Bunny Sandbox profile

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

What is different

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

Field

Bunny Sandbox

Fly.io Sprites

vCPU, per hour: Bunny Sandbox: $0.02; Fly.io Sprites: $0.0385
RAM, per GiB-hour: Bunny Sandbox: $0.005; Fly.io Sprites: $0.021875
Storage: Bunny Sandbox: $0.10 per GB per month on the allocated 10 GB; Fly.io Sprites: $0.000683 per GiB-hour
Isolation: Bunny Sandbox: gVisor; Fly.io Sprites: MicroVM
SDKs: Bunny Sandbox: JavaScript / TypeScript; Fly.io Sprites: Python, JavaScript / TypeScript, Go

Full comparison

18 fields, at each provider's list price

Bunny Sandboxbunny.net/blog/introducing-bunny-sandbox-a-disposable-room-where-ai-can-buildbunny.net

Fly.io Spritesfly.io/pricing

Pricing

vCPU, per hour: Bunny Sandbox: $0.02; Fly.io Sprites: $0.0385
RAM, per GiB-hour: Bunny Sandbox: $0.005; Fly.io Sprites: $0.021875
Storage: Bunny Sandbox: $0.10 per GB per month on the allocated 10 GB; Fly.io Sprites: $0.000683 per GiB-hour
Free tier: Bunny Sandbox: Not listed; Fly.io Sprites: $30 trial credit
Paid plan from: Bunny Sandbox: Not listed; Fly.io Sprites: Pay as you go
Billing: Bunny Sandbox: Active CPU time only; Fly.io Sprites: Active CPU time only

Limits

Max session: Bunny Sandbox: Not listed; Fly.io Sprites: Not listed
Idle stop: Bunny Sandbox: Not listed; Fly.io Sprites: Not listed
Largest sandbox: Bunny Sandbox: Not listed; Fly.io Sprites: Not listed
Concurrent sandboxes: Bunny Sandbox: Not listed; Fly.io Sprites: Not listed

Platform

Isolation: Bunny Sandbox: gVisor; Fly.io Sprites: MicroVM
GPU: Bunny Sandbox: Not listed; Fly.io Sprites: Not listed
Snapshots: Bunny Sandbox: Not listed; Fly.io Sprites:
Pause and resume: Bunny Sandbox: Not listed; Fly.io Sprites:

Developer

SDKs: Bunny Sandbox: JavaScript / TypeScript; Fly.io Sprites: Python, JavaScript / TypeScript, Go
Integrations: Bunny Sandbox: Not listed; Fly.io Sprites: MCP, OpenAI Agents SDK

Trust

License: Bunny Sandbox: Not listed; Fly.io Sprites: Not listed
BYOC: Bunny Sandbox: Not listed; Fly.io Sprites: Not listed

Hourly cost

One sandbox running for one hour

Size

Bunny Sandbox

Fly.io Sprites

1 vCPU · 2 GiB: Bunny Sandbox: $0.030; Fly.io Sprites: $0.082
2 vCPU · 4 GiB: Bunny Sandbox: $0.060; Fly.io Sprites: $0.165
4 vCPU · 8 GiB: Bunny Sandbox: $0.120; Fly.io Sprites: $0.329

Compute only, at list rates.

Open the calculator

Which one fits

Based on the fields above

Bunny Sandbox fits when

You want the lower list price: $0.060 against $0.165 an hour for 2 vCPU and 4 GiB.

Fly.io Sprites fits when

You want each sandbox in its own microVM.
You use MCP or the OpenAI Agents SDK.
You need snapshots.
You need pause and resume.

More comparisons

See all comparisons

Bunny Sandbox

Fly.io Sprites

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Bunny Sandbox fits when

Fly.io Sprites fits when

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