Mosaic Sandbox vs Railway Sandboxes
Mosaic Sandbox costs $0.025 per vCPU-hour and Railway Sandboxes costs $0.069444 per vCPU-hour. Mosaic Sandbox runs Firecracker microVMs. Railway Sandboxes runs full VMs.
Updated
Mosaic Sandbox
- Isolation
- Firecracker microVM
- Free tier
- Not listed
- Max session
- Not listed
Railway Sandboxes
- Isolation
- Full VM
- Free tier
- $5 trial credit for 30 days
- Max session
- Not listed
What is different
8 fields differ. The rest are the same or not listed.
Mosaic Sandbox
Railway Sandboxes
- vCPU, per hour
- Mosaic Sandbox: $0.025
- Railway Sandboxes: $0.069444
- RAM, per GiB-hour
- Mosaic Sandbox: Included
- Railway Sandboxes: $0.069444
- Paid plan from
- Mosaic Sandbox: Pay as you go
- Railway Sandboxes: $5 / month
- Billing
- Mosaic Sandbox: Bundled machine time
- Railway Sandboxes: Active CPU time only
- Largest sandbox
- Mosaic Sandbox: 16 vCPU · 32 GiB
- Railway Sandboxes: 32 vCPU · 32 GiB
- Concurrent sandboxes
- Mosaic Sandbox: Up to 200
- Railway Sandboxes: Up to 100
- Isolation
- Mosaic Sandbox: Firecracker microVM
- Railway Sandboxes: Full VM
- SDKs
- Mosaic Sandbox: Python, TypeScript, Go
- Railway Sandboxes: TypeScript
Full comparison
18 fields, at each provider's list price
Mosaic Sandboxsandbox
Railway Sandboxesrailway
Pricing
- vCPU, per hour
- Mosaic Sandbox: $0.025
- Railway Sandboxes: $0.069444
- RAM, per GiB-hour
- Mosaic Sandbox: Included
- Railway Sandboxes: $0.069444
- Storage
- Mosaic Sandbox: Free
- Railway Sandboxes: Not listed
- Free tier
- Mosaic Sandbox: Not listed
- Railway Sandboxes: $5 trial credit for 30 days
- Paid plan from
- Mosaic Sandbox: Pay as you go
- Railway Sandboxes: $5 / month
- Billing
- Mosaic Sandbox: Bundled machine time
- Railway Sandboxes: Active CPU time only
Limits
- Max session
- Mosaic Sandbox: Not listed
- Railway Sandboxes: Not listed
- Idle stop
- Mosaic Sandbox: Not listed
- Railway Sandboxes: After 30 minutes
- Largest sandbox
- Mosaic Sandbox: 16 vCPU · 32 GiB
- Railway Sandboxes: 32 vCPU · 32 GiB
- Concurrent sandboxes
- Mosaic Sandbox: Up to 200
- Railway Sandboxes: Up to 100
Platform
- Isolation
- Mosaic Sandbox: Firecracker microVM
- Railway Sandboxes: Full VM
- GPU
- Mosaic Sandbox: Not listed
- Railway Sandboxes: Not listed
- Snapshots
- Mosaic Sandbox:
- Railway Sandboxes:
- Pause and resume
- Mosaic Sandbox:
- Railway Sandboxes: Not listed
Developer
- SDKs
- Mosaic Sandbox: Python, TypeScript, Go
- Railway Sandboxes: TypeScript
- Integrations
- Mosaic Sandbox: LangChain, MCP
- Railway Sandboxes: Not listed
Trust
- License
- Mosaic Sandbox: Not listed
- Railway Sandboxes: Not listed
- BYOC
- Mosaic Sandbox: Not listed
- Railway Sandboxes: Not listed
Hourly cost
One sandbox running for one hour
Mosaic Sandbox
Railway Sandboxes
- 1 vCPU · 2 GiB
- Mosaic Sandbox: $0.025
- Railway Sandboxes: $0.208
- 2 vCPU · 4 GiB
- Mosaic Sandbox: $0.050
- Railway Sandboxes: $0.417
- 4 vCPU · 8 GiB
- Mosaic Sandbox: $0.100
- Railway Sandboxes: $0.833
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Mosaic Sandbox fits when
- You want to pay only for usage, with no plan fee.
- You want each sandbox in its own microVM.
- You use LangChain or MCP.
- You want the lower list price: $0.050 against $0.417 an hour for 2 vCPU and 4 GiB.
Railway Sandboxes fits when
- 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 16 vCPU · 32 GiB.
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