Phonebox vs Railway Sandboxes

Railway Sandboxes costs $0.069444 per vCPU-hour. Phonebox limits a session to 3 hours. Railway Sandboxes runs full VMs.

Updated

Phonebox

Isolation
Not listed
Free tier
$2 starter credit, one time, no card
Max session
3 hours

Railway Sandboxes

Isolation
Full VM
Free tier
$5 trial credit for 30 days
Max session
Not listed

What is different

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

Phonebox
Railway Sandboxes
Free tier
Phonebox: $2 starter credit, one time, no card
Railway Sandboxes: $5 trial credit for 30 days
Paid plan from
Phonebox: Pay as you go
Railway Sandboxes: $5 / month
Billing
Phonebox: Bundled machine time
Railway Sandboxes: Active CPU time only
Idle stop
Phonebox: After 5 minutes
Railway Sandboxes: After 30 minutes
Concurrent sandboxes
Phonebox: Up to 5
Railway Sandboxes: Up to 100
Integrations
Phonebox: MCP
Railway Sandboxes: Claude Code

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Phonebox: Not listed
Railway Sandboxes: $0.069444
RAM, per GiB-hour
Phonebox: Not listed
Railway Sandboxes: $0.069444
Storage
Phonebox: Not listed
Railway Sandboxes: Not listed
Free tier
Phonebox: $2 starter credit, one time, no card
Railway Sandboxes: $5 trial credit for 30 days
Paid plan from
Phonebox: Pay as you go
Railway Sandboxes: $5 / month
Billing
Phonebox: Bundled machine time
Railway Sandboxes: Active CPU time only

Limits

Max session
Phonebox: 3 hours
Railway Sandboxes: Not listed
Idle stop
Phonebox: After 5 minutes
Railway Sandboxes: After 30 minutes
Largest sandbox
Phonebox: Not listed
Railway Sandboxes: 32 vCPU · 32 GiB
Concurrent sandboxes
Phonebox: Up to 5
Railway Sandboxes: Up to 100

Platform

Isolation
Phonebox: Not listed
Railway Sandboxes: Full VM
GPU
Phonebox: Not listed
Railway Sandboxes: Not listed
Snapshots
Phonebox: Not listed
Railway Sandboxes:
Pause and resume
Phonebox:
Railway Sandboxes: Not listed

Developer

SDKs
Phonebox: TypeScript
Railway Sandboxes: TypeScript
Integrations
Phonebox: MCP
Railway Sandboxes: Claude Code

Trust

License
Phonebox: Not listed
Railway Sandboxes: Not listed
BYOC
Phonebox: Not listed
Railway Sandboxes: Not listed

Hourly cost

One sandbox running for one hour

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

Compute only, at list rates.

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Which one fits

Based on the fields above

Phonebox fits when

  • You want to pay only for usage, with no plan fee.
  • You use MCP.
  • You need pause and resume.

Railway Sandboxes fits when

  • You use Claude Code.
  • You need snapshots.
  • Your code waits a lot: CPU is billed only while it is in use.
  • You need SOC 2 Type II, HIPAA and GDPR.

More comparisons

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