Bunny Sandbox vs Mosaic Sandbox

Bunny Sandbox costs $0.02 per vCPU-hour and Mosaic Sandbox costs $0.025 per vCPU-hour. Bunny Sandbox runs gVisor. Mosaic Sandbox runs Firecracker 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

Mosaic Sandbox

Linux microVM sandboxes for coding agents.

Isolation: Firecracker microVM
Free tier: Not listed
Max session: Not listed

Visit site Mosaic Sandbox profile

What is different

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

Field

Bunny Sandbox

Mosaic Sandbox

vCPU, per hour: Bunny Sandbox: $0.02; Mosaic Sandbox: $0.025
RAM, per GiB-hour: Bunny Sandbox: $0.005; Mosaic Sandbox: Included
Storage: Bunny Sandbox: $0.10 per GB per month on the allocated 10 GB; Mosaic Sandbox: Free
Billing: Bunny Sandbox: Active CPU time only; Mosaic Sandbox: Bundled machine time
Isolation: Bunny Sandbox: gVisor; Mosaic Sandbox: Firecracker microVM
SDKs: Bunny Sandbox: JavaScript / TypeScript; Mosaic Sandbox: Python, TypeScript, Go
Integrations: Bunny Sandbox: Claude Code; Mosaic Sandbox: LangChain, MCP

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

Mosaic Sandboxsandbox.mosaicos.com/pricingsandbox.mosaicos.com

Pricing

vCPU, per hour: Bunny Sandbox: $0.02; Mosaic Sandbox: $0.025
RAM, per GiB-hour: Bunny Sandbox: $0.005; Mosaic Sandbox: Included
Storage: Bunny Sandbox: $0.10 per GB per month on the allocated 10 GB; Mosaic Sandbox: Free
Free tier: Bunny Sandbox: Not listed; Mosaic Sandbox: Not listed
Paid plan from: Bunny Sandbox: Not listed; Mosaic Sandbox: Pay as you go
Billing: Bunny Sandbox: Active CPU time only; Mosaic Sandbox: Bundled machine time

Limits

Max session: Bunny Sandbox: Not listed; Mosaic Sandbox: Not listed
Idle stop: Bunny Sandbox: Not listed; Mosaic Sandbox: Not listed
Largest sandbox: Bunny Sandbox: Not listed; Mosaic Sandbox: 16 vCPU · 32 GiB
Concurrent sandboxes: Bunny Sandbox: Not listed; Mosaic Sandbox: Up to 200

Platform

Isolation: Bunny Sandbox: gVisor; Mosaic Sandbox: Firecracker microVM
GPU: Bunny Sandbox: Not listed; Mosaic Sandbox: Not listed
Snapshots: Bunny Sandbox: Not listed; Mosaic Sandbox:
Pause and resume: Bunny Sandbox: Not listed; Mosaic Sandbox:

Developer

SDKs: Bunny Sandbox: JavaScript / TypeScript; Mosaic Sandbox: Python, TypeScript, Go
Integrations: Bunny Sandbox: Claude Code; Mosaic Sandbox: LangChain, MCP

Trust

License: Bunny Sandbox: Not listed; Mosaic Sandbox: Not listed
BYOC: Bunny Sandbox: Not listed; Mosaic Sandbox: Not listed

Hourly cost

One sandbox running for one hour

Size

Bunny Sandbox

Mosaic Sandbox

1 vCPU · 2 GiB: Bunny Sandbox: $0.030; Mosaic Sandbox: $0.025
2 vCPU · 4 GiB: Bunny Sandbox: $0.060; Mosaic Sandbox: $0.050
4 vCPU · 8 GiB: Bunny Sandbox: $0.120; Mosaic Sandbox: $0.100

Compute only, at list rates.

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Which one fits

Based on the fields above

Bunny Sandbox fits when

You use Claude Code.
Your code waits a lot: CPU is billed only while it is in use.

Mosaic Sandbox fits when

You want each sandbox in its own microVM.
You use LangChain or MCP.
You want the lower list price: $0.050 against $0.060 an hour for 2 vCPU and 4 GiB.
You need snapshots.

More comparisons

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Bunny Sandbox

Mosaic Sandbox

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Bunny Sandbox fits when

Mosaic Sandbox fits when

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