Railway Sandboxes vs Sailboxes

Railway Sandboxes costs $0.069444 per vCPU-hour and Sailboxes costs $0.015 per vCPU-hour. Railway Sandboxes runs full VMs. Sailboxes runs full VMs and has no session limit.

Updated Oct 14, 2026

Railway Sandboxes

Isolated Linux VMs you create on demand and destroy.

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

Visit site Railway Sandboxes profile

Sailboxes

Persistent Linux VMs for long-horizon AI agents.

Isolation: Full VM
Free tier: $5 credit every month
Max session: No limit

Visit site Sailboxes profile

What is different

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

Field

Railway Sandboxes

Sailboxes

vCPU, per hour: Railway Sandboxes: $0.069444; Sailboxes: $0.015
RAM, per GiB-hour: Railway Sandboxes: $0.069444; Sailboxes: $0.008
Free tier: Railway Sandboxes: $5 trial credit for 30 days; Sailboxes: $5 credit every month
Paid plan from: Railway Sandboxes: $5 / month; Sailboxes: Pay as you go
Billing: Railway Sandboxes: Active CPU time only; Sailboxes: Per second
Concurrent sandboxes: Railway Sandboxes: Up to 100; Sailboxes: Up to 5,000
SDKs: Railway Sandboxes: TypeScript; Sailboxes: Python, TypeScript, Rust

Full comparison

18 fields, at each provider's list price

Railway Sandboxesrailway.com/pricingrailway.com

Sailboxesdocs.sailresearch.com/sailboxes-pricingdocs.sailresearch.com

Pricing

vCPU, per hour: Railway Sandboxes: $0.069444; Sailboxes: $0.015
RAM, per GiB-hour: Railway Sandboxes: $0.069444; Sailboxes: $0.008
Storage: Railway Sandboxes: Not listed; Sailboxes: $0.0007 per GiB-hour
Free tier: Railway Sandboxes: $5 trial credit for 30 days; Sailboxes: $5 credit every month
Paid plan from: Railway Sandboxes: $5 / month; Sailboxes: Pay as you go
Billing: Railway Sandboxes: Active CPU time only; Sailboxes: Per second

Limits

Max session: Railway Sandboxes: Not listed; Sailboxes: No limit
Idle stop: Railway Sandboxes: After 30 minutes; Sailboxes: Not listed
Largest sandbox: Railway Sandboxes: 32 vCPU · 32 GiB; Sailboxes: Not listed
Concurrent sandboxes: Railway Sandboxes: Up to 100; Sailboxes: Up to 5,000

Platform

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

Developer

SDKs: Railway Sandboxes: TypeScript; Sailboxes: Python, TypeScript, Rust
Integrations: Railway Sandboxes: Not listed; Sailboxes: Not listed

Trust

License: Railway Sandboxes: Not listed; Sailboxes: Not listed
BYOC: Railway Sandboxes: Not listed; Sailboxes: Not listed

Hourly cost

One sandbox running for one hour

Size

Railway Sandboxes

Sailboxes

1 vCPU · 2 GiB: Railway Sandboxes: $0.208; Sailboxes: $0.031
2 vCPU · 4 GiB: Railway Sandboxes: $0.417; Sailboxes: $0.062
4 vCPU · 8 GiB: Railway Sandboxes: $0.833; Sailboxes: $0.124

Compute only, at list rates.

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Which one fits

Based on the fields above

Railway Sandboxes fits when

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

Sailboxes fits when

You want to pay only for usage, with no plan fee.
You want the lower list price: $0.062 against $0.417 an hour for 2 vCPU and 4 GiB.
You need pause and resume.
You need SOC 2 and HIPAA.

More comparisons

See all comparisons

Railway Sandboxes

Sailboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Railway Sandboxes fits when

Sailboxes fits when

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