Mosaic Sandbox vs Sandbox0

Mosaic Sandbox costs $0.025 per vCPU-hour. Sandbox0 bills memory only, at $0.015 per GiB-hour. Mosaic Sandbox runs Firecracker microVMs. Sandbox0 runs gVisor and has no session limit.

Updated

Mosaic Sandbox

Isolation
Firecracker microVM
Free tier
Not listed
Max session
Not listed

Sandbox0

Isolation
gVisor
Free tier
Not listed
Max session
No limit

What is different

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

Mosaic Sandbox
Sandbox0
vCPU, per hour
Mosaic Sandbox: $0.025
Sandbox0: Included
RAM, per GiB-hour
Mosaic Sandbox: Included
Sandbox0: $0.015
Billing
Mosaic Sandbox: Bundled machine time
Sandbox0: Memory only
Concurrent sandboxes
Mosaic Sandbox: Up to 200
Sandbox0: Up to 20
Isolation
Mosaic Sandbox: Firecracker microVM
Sandbox0: gVisor
SDKs
Mosaic Sandbox: Python, TypeScript, Go
Sandbox0: Go, Python, TypeScript
Integrations
Mosaic Sandbox: LangChain, MCP
Sandbox0: LangChain, OpenAI Agents SDK

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Mosaic Sandbox: $0.025
Sandbox0: Included
RAM, per GiB-hour
Mosaic Sandbox: Included
Sandbox0: $0.015
Storage
Mosaic Sandbox: Free
Sandbox0: Free
Free tier
Mosaic Sandbox: Not listed
Sandbox0: Not listed
Paid plan from
Mosaic Sandbox: Pay as you go
Sandbox0: Pay as you go
Billing
Mosaic Sandbox: Bundled machine time
Sandbox0: Memory only

Limits

Max session
Mosaic Sandbox: Not listed
Sandbox0: No limit
Idle stop
Mosaic Sandbox: Not listed
Sandbox0: Not listed
Largest sandbox
Mosaic Sandbox: 16 vCPU · 32 GiB
Sandbox0: Not listed
Concurrent sandboxes
Mosaic Sandbox: Up to 200
Sandbox0: Up to 20

Platform

Isolation
Mosaic Sandbox: Firecracker microVM
Sandbox0: gVisor
GPU
Mosaic Sandbox: Not listed
Sandbox0: Not listed
Snapshots
Mosaic Sandbox:
Sandbox0:
Pause and resume
Mosaic Sandbox:
Sandbox0:

Developer

SDKs
Mosaic Sandbox: Python, TypeScript, Go
Sandbox0: Go, Python, TypeScript
Integrations
Mosaic Sandbox: LangChain, MCP
Sandbox0: LangChain, OpenAI Agents SDK

Trust

License
Mosaic Sandbox: Not listed
Sandbox0: Apache-2.0
BYOC
Mosaic Sandbox: Not listed
Sandbox0: Not listed

Hourly cost

One sandbox running for one hour

Mosaic Sandbox
Sandbox0
1 vCPU · 2 GiB
Mosaic Sandbox: $0.025
Sandbox0: $0.030
2 vCPU · 4 GiB
Mosaic Sandbox: $0.050
Sandbox0: $0.060
4 vCPU · 8 GiB
Mosaic Sandbox: $0.100
Sandbox0: $0.120

Compute only, at list rates.

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Which one fits

Based on the fields above

Mosaic Sandbox fits when

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

Sandbox0 fits when

  • You want an open-source platform (Apache-2.0) that you can self-host.
  • You use the OpenAI Agents SDK.
  • You want one rate for memory, with CPU included.

More comparisons

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