Agent Sandbox vs Shellbox

Shellbox costs $0.01 per vCPU-hour. Agent Sandbox runs containers. Shellbox runs Firecracker microVMs and has no session limit.

Updated

Agent Sandbox

Isolation
Container
Free tier
$10 credit with a Google sign-in
Max session
Not listed

Shellbox

Isolation
Firecracker microVM
Free tier
Not listed
Max session
No limit

What is different

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

Agent Sandbox
Shellbox
Storage
Agent Sandbox: $0.0005/MB for output files
Shellbox: A stopped box costs $0.50 per x1 slot per month
Billing
Agent Sandbox: Per second
Shellbox: Bundled machine time
Idle stop
Agent Sandbox: After 5 minutes
Shellbox: After 2 minutes
Isolation
Agent Sandbox: Container
Shellbox: Firecracker microVM

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Agent Sandbox: Not listed
Shellbox: $0.01
RAM, per GiB-hour
Agent Sandbox: Not listed
Shellbox: Included
Storage
Agent Sandbox: $0.0005/MB for output files
Shellbox: A stopped box costs $0.50 per x1 slot per month
Free tier
Agent Sandbox: $10 credit with a Google sign-in
Shellbox: Not listed
Paid plan from
Agent Sandbox: Pay as you go
Shellbox: Pay as you go
Billing
Agent Sandbox: Per second
Shellbox: Bundled machine time

Limits

Max session
Agent Sandbox: Not listed
Shellbox: No limit
Idle stop
Agent Sandbox: After 5 minutes
Shellbox: After 2 minutes
Largest sandbox
Agent Sandbox: Not listed
Shellbox: 16 vCPU · 32 GiB
Concurrent sandboxes
Agent Sandbox: Not listed
Shellbox: Up to 16

Platform

Isolation
Agent Sandbox: Container
Shellbox: Firecracker microVM
GPU
Agent Sandbox: Not listed
Shellbox: Not listed
Snapshots
Agent Sandbox: Not listed
Shellbox:
Pause and resume
Agent Sandbox: Not listed
Shellbox:

Developer

SDKs
Agent Sandbox: Python
Shellbox: Not listed
Integrations
Agent Sandbox: Claude Code
Shellbox: Claude Code

Trust

License
Agent Sandbox: Not listed
Shellbox: Not listed
BYOC
Agent Sandbox: Not listed
Shellbox: Not listed

Hourly cost

One sandbox running for one hour

Agent Sandbox
Shellbox
1 vCPU · 2 GiB
Agent Sandbox: Not listed
Shellbox: $0.010
2 vCPU · 4 GiB
Agent Sandbox: Not listed
Shellbox: $0.020
4 vCPU · 8 GiB
Agent Sandbox: Not listed
Shellbox: $0.040

Compute only, at list rates.

Open the calculator

Which one fits

Based on the fields above

Shellbox fits when

  • You want each sandbox in its own microVM.
  • You need snapshots.
  • You need pause and resume.

More comparisons

See all comparisons

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