Railway Sandboxes vs xShellz Agent Shell

Railway Sandboxes costs $0.069444 per vCPU-hour. Railway Sandboxes runs full VMs and has no session limit. xShellz Agent Shell runs gVisor and has no session limit.

Updated

Railway Sandboxes

Isolation
Full VM
Free tier
$5 trial credit for 30 days
Max session
No limit

xShellz Agent Shell

Isolation
gVisor
Free tier
Free plan, 1 box with 0.5 vCPU and 512 MB
Max session
No limit

What is different

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

Railway Sandboxes
xShellz Agent Shell
RAM, per GiB-hour
Railway Sandboxes: $0.069444
xShellz Agent Shell: Included
Free tier
Railway Sandboxes: $5 trial credit for 30 days
xShellz Agent Shell: Free plan, 1 box with 0.5 vCPU and 512 MB
Paid plan from
Railway Sandboxes: $5 / month
xShellz Agent Shell: $10 / month
Billing
Railway Sandboxes: Active CPU time only
xShellz Agent Shell: Bundled machine time
Largest sandbox
Railway Sandboxes: 32 vCPU · 32 GiB
xShellz Agent Shell: 4 vCPU · 4 GiB
Concurrent sandboxes
Railway Sandboxes: Up to 100
xShellz Agent Shell: Up to 5
Isolation
Railway Sandboxes: Full VM
xShellz Agent Shell: gVisor
SDKs
Railway Sandboxes: TypeScript
xShellz Agent Shell: Python, JavaScript / TypeScript, Go, Java, Ruby, Rust
Integrations
Railway Sandboxes: Claude Code
xShellz Agent Shell: MCP, Claude Code

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Railway Sandboxes: $0.069444
xShellz Agent Shell: Not listed
RAM, per GiB-hour
Railway Sandboxes: $0.069444
xShellz Agent Shell: Included
Storage
Railway Sandboxes: Not listed
xShellz Agent Shell: Free
Free tier
Railway Sandboxes: $5 trial credit for 30 days
xShellz Agent Shell: Free plan, 1 box with 0.5 vCPU and 512 MB
Paid plan from
Railway Sandboxes: $5 / month
xShellz Agent Shell: $10 / month
Billing
Railway Sandboxes: Active CPU time only
xShellz Agent Shell: Bundled machine time

Limits

Max session
Railway Sandboxes: No limit
xShellz Agent Shell: No limit
Idle stop
Railway Sandboxes: After 30 minutes
xShellz Agent Shell: Not listed
Largest sandbox
Railway Sandboxes: 32 vCPU · 32 GiB
xShellz Agent Shell: 4 vCPU · 4 GiB
Concurrent sandboxes
Railway Sandboxes: Up to 100
xShellz Agent Shell: Up to 5

Platform

Isolation
Railway Sandboxes: Full VM
xShellz Agent Shell: gVisor
GPU
Railway Sandboxes: Not listed
xShellz Agent Shell: Not listed
Snapshots
Railway Sandboxes:
xShellz Agent Shell: Not listed
Pause and resume
Railway Sandboxes: Not listed
xShellz Agent Shell:

Developer

SDKs
Railway Sandboxes: TypeScript
xShellz Agent Shell: Python, JavaScript / TypeScript, Go, Java, Ruby, Rust
Integrations
Railway Sandboxes: Claude Code
xShellz Agent Shell: MCP, Claude Code

Trust

License
Railway Sandboxes: Not listed
xShellz Agent Shell: Not listed
BYOC
Railway Sandboxes: Not listed
xShellz Agent Shell: Not listed

Hourly cost

One sandbox running for one hour

Railway Sandboxes
xShellz Agent Shell
1 vCPU · 2 GiB
Railway Sandboxes: $0.208
xShellz Agent Shell: Not listed
2 vCPU · 4 GiB
Railway Sandboxes: $0.417
xShellz Agent Shell: Not listed
4 vCPU · 8 GiB
Railway Sandboxes: $0.833
xShellz Agent Shell: Not listed

Compute only, at list rates.

Open the calculator

Which one fits

Based on the fields above

Railway Sandboxes fits when

  • You want each sandbox to be a full VM.
  • You need snapshots.
  • Your code waits a lot: CPU is billed only while it is in use.
  • You need a sandbox larger than 4 vCPU · 4 GiB.

xShellz Agent Shell fits when

  • You use MCP.
  • You need pause and resume.

More comparisons

See all comparisons

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