Railway Sandboxes vs Solari
Railway Sandboxes costs $0.069444 per vCPU-hour and Solari costs $0.0525 per vCPU-hour. Railway Sandboxes runs full VMs and has no session limit. Solari runs Cloud Hypervisor microVMs and limits a session to 24 hours.
Updated
Railway Sandboxes
- Isolation
- Full VM
- Free tier
- $5 trial credit for 30 days
- Max session
- No limit
Solari
- Isolation
- Cloud Hypervisor microVM
- Free tier
- $3 credit every month
- Max session
- 24 hours
What is different
11 fields differ. The rest are the same or not listed.
Railway Sandboxes
Solari
- vCPU, per hour
- Railway Sandboxes: $0.069444
- Solari: $0.0525
- RAM, per GiB-hour
- Railway Sandboxes: $0.069444
- Solari: $0.0165
- Free tier
- Railway Sandboxes: $5 trial credit for 30 days
- Solari: $3 credit every month
- Paid plan from
- Railway Sandboxes: $5 / month
- Solari: $20 / month
- Billing
- Railway Sandboxes: Active CPU time only
- Solari: Per second
- Max session
- Railway Sandboxes: No limit
- Solari: 24 hours
- Largest sandbox
- Railway Sandboxes: 32 vCPU · 32 GiB
- Solari: 8 vCPU · 16 GiB
- Concurrent sandboxes
- Railway Sandboxes: Up to 100
- Solari: Up to 10
- Isolation
- Railway Sandboxes: Full VM
- Solari: Cloud Hypervisor microVM
- SDKs
- Railway Sandboxes: TypeScript
- Solari: TypeScript, Python, Go, Rust
- Integrations
- Railway Sandboxes: Claude Code
- Solari: MCP, Claude Code
Full comparison
18 fields, at each provider's list price
Railway Sandboxesrailway
Solaridocs
Pricing
- vCPU, per hour
- Railway Sandboxes: $0.069444
- Solari: $0.0525
- RAM, per GiB-hour
- Railway Sandboxes: $0.069444
- Solari: $0.0165
- Storage
- Railway Sandboxes: Not listed
- Solari: Snapshots $0.05 per GB-month, the first 10 GB per organization free, from October 1, 2026.
- Free tier
- Railway Sandboxes: $5 trial credit for 30 days
- Solari: $3 credit every month
- Paid plan from
- Railway Sandboxes: $5 / month
- Solari: $20 / month
- Billing
- Railway Sandboxes: Active CPU time only
- Solari: Per second
Limits
- Max session
- Railway Sandboxes: No limit
- Solari: 24 hours
- Idle stop
- Railway Sandboxes: After 30 minutes
- Solari: Not listed
- Largest sandbox
- Railway Sandboxes: 32 vCPU · 32 GiB
- Solari: 8 vCPU · 16 GiB
- Concurrent sandboxes
- Railway Sandboxes: Up to 100
- Solari: Up to 10
Platform
- Isolation
- Railway Sandboxes: Full VM
- Solari: Cloud Hypervisor microVM
- GPU
- Railway Sandboxes: Not listed
- Solari: Not listed
- Snapshots
- Railway Sandboxes:
- Solari:
- Pause and resume
- Railway Sandboxes: Not listed
- Solari:
Developer
- SDKs
- Railway Sandboxes: TypeScript
- Solari: TypeScript, Python, Go, Rust
- Integrations
- Railway Sandboxes: Claude Code
- Solari: MCP, Claude Code
Trust
- License
- Railway Sandboxes: Not listed
- Solari: Not listed
- BYOC
- Railway Sandboxes: Not listed
- Solari: Enterprise plan, in your own VPC
Hourly cost
One sandbox running for one hour
Railway Sandboxes
Solari
- 1 vCPU · 2 GiB
- Railway Sandboxes: $0.208
- Solari: $0.086
- 2 vCPU · 4 GiB
- Railway Sandboxes: $0.417
- Solari: $0.171
- 4 vCPU · 8 GiB
- Railway Sandboxes: $0.833
- Solari: $0.342
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Railway Sandboxes fits when
- A session must run longer than 24 hours.
- You want each sandbox to be a full VM.
- Your code waits a lot: CPU is billed only while it is in use.
- You need a sandbox larger than 8 vCPU · 16 GiB.
Solari fits when
- You want each sandbox in its own microVM.
- You use MCP.
- You want the lower list price: $0.171 against $0.417 an hour for 2 vCPU and 4 GiB.
- You need pause and resume.
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