Microsoft Foundry hosted agents vs Railway Sandboxes
Microsoft Foundry hosted agents costs $0.0994 per vCPU-hour and Railway Sandboxes costs $0.069444 per vCPU-hour. Microsoft Foundry hosted agents runs microVMs. Railway Sandboxes runs full VMs and has no session limit.
Updated
Microsoft Foundry hosted agents
- Isolation
- MicroVM
- Free tier
- Not listed
- Max session
- Not listed
Railway Sandboxes
- Isolation
- Full VM
- Free tier
- $5 trial credit for 30 days
- Max session
- No limit
What is different
10 fields differ. The rest are the same or not listed.
Microsoft Foundry hosted agents
Railway Sandboxes
- vCPU, per hour
- Microsoft Foundry hosted agents: $0.0994
- Railway Sandboxes: $0.069444
- RAM, per GiB-hour
- Microsoft Foundry hosted agents: $0.0118
- Railway Sandboxes: $0.069444
- Paid plan from
- Microsoft Foundry hosted agents: Pay as you go
- Railway Sandboxes: $5 / month
- Billing
- Microsoft Foundry hosted agents: Per second
- Railway Sandboxes: Active CPU time only
- Idle stop
- Microsoft Foundry hosted agents: After 15 minutes
- Railway Sandboxes: After 30 minutes
- Largest sandbox
- Microsoft Foundry hosted agents: 2 vCPU · 4 GiB
- Railway Sandboxes: 32 vCPU · 32 GiB
- Concurrent sandboxes
- Microsoft Foundry hosted agents: Up to 2,000
- Railway Sandboxes: Up to 100
- Isolation
- Microsoft Foundry hosted agents: MicroVM
- Railway Sandboxes: Full VM
- SDKs
- Microsoft Foundry hosted agents: Python, JavaScript / TypeScript
- Railway Sandboxes: TypeScript
- Integrations
- Microsoft Foundry hosted agents: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK
- Railway Sandboxes: Claude Code
Full comparison
18 fields, at each provider's list price
Microsoft Foundry hosted agentsazure
Railway Sandboxesrailway
Pricing
- vCPU, per hour
- Microsoft Foundry hosted agents: $0.0994
- Railway Sandboxes: $0.069444
- RAM, per GiB-hour
- Microsoft Foundry hosted agents: $0.0118
- Railway Sandboxes: $0.069444
- Storage
- Microsoft Foundry hosted agents: Not listed
- Railway Sandboxes: Not listed
- Free tier
- Microsoft Foundry hosted agents: Not listed
- Railway Sandboxes: $5 trial credit for 30 days
- Paid plan from
- Microsoft Foundry hosted agents: Pay as you go
- Railway Sandboxes: $5 / month
- Billing
- Microsoft Foundry hosted agents: Per second
- Railway Sandboxes: Active CPU time only
Limits
- Max session
- Microsoft Foundry hosted agents: Not listed
- Railway Sandboxes: No limit
- Idle stop
- Microsoft Foundry hosted agents: After 15 minutes
- Railway Sandboxes: After 30 minutes
- Largest sandbox
- Microsoft Foundry hosted agents: 2 vCPU · 4 GiB
- Railway Sandboxes: 32 vCPU · 32 GiB
- Concurrent sandboxes
- Microsoft Foundry hosted agents: Up to 2,000
- Railway Sandboxes: Up to 100
Platform
- Isolation
- Microsoft Foundry hosted agents: MicroVM
- Railway Sandboxes: Full VM
- GPU
- Microsoft Foundry hosted agents: Not listed
- Railway Sandboxes: Not listed
- Snapshots
- Microsoft Foundry hosted agents: Not listed
- Railway Sandboxes:
- Pause and resume
- Microsoft Foundry hosted agents:
- Railway Sandboxes: Not listed
Developer
- SDKs
- Microsoft Foundry hosted agents: Python, JavaScript / TypeScript
- Railway Sandboxes: TypeScript
- Integrations
- Microsoft Foundry hosted agents: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK
- Railway Sandboxes: Claude Code
Trust
- License
- Microsoft Foundry hosted agents: Not listed
- Railway Sandboxes: Not listed
- BYOC
- Microsoft Foundry hosted agents: Not listed
- Railway Sandboxes: Not listed
Hourly cost
One sandbox running for one hour
Microsoft Foundry hosted agents
Railway Sandboxes
- 1 vCPU · 2 GiB
- Microsoft Foundry hosted agents: $0.123
- Railway Sandboxes: $0.208
- 2 vCPU · 4 GiB
- Microsoft Foundry hosted agents: $0.246
- Railway Sandboxes: $0.417
- 4 vCPU · 8 GiB
- Microsoft Foundry hosted agents: $0.492
- Railway Sandboxes: $0.833
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Microsoft Foundry hosted agents fits when
- You want to pay only for usage, with no plan fee.
- You want each sandbox in its own microVM.
- You use the Claude Agent SDK, LangChain, MCP or the OpenAI Agents SDK.
- You want the lower list price: $0.246 against $0.417 an hour for 2 vCPU and 4 GiB.
Railway Sandboxes fits when
- You want each sandbox to be a full VM.
- You use Claude Code.
- You need snapshots.
- Your code waits a lot: CPU is billed only while it is in use.
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