Microsoft Foundry hosted agents vs Upstash Box

Microsoft Foundry hosted agents costs $0.0994 per vCPU-hour and Upstash Box costs $0.10 per vCPU-hour. Microsoft Foundry hosted agents runs microVMs. Upstash Box runs containers.

Updated

Microsoft Foundry hosted agents

Isolation
MicroVM
Free tier
Not listed
Max session
Not listed

Upstash Box

Isolation
Container
Free tier
Free plan, 5 CPU hours per month
Max session
Not listed

What is different

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

Microsoft Foundry hosted agents
Upstash Box
vCPU, per hour
Microsoft Foundry hosted agents: $0.0994
Upstash Box: $0.10
RAM, per GiB-hour
Microsoft Foundry hosted agents: $0.0118
Upstash Box: Included
Billing
Microsoft Foundry hosted agents: Per second
Upstash Box: Active CPU time only
Idle stop
Microsoft Foundry hosted agents: After 15 minutes
Upstash Box: After 360 minutes
Largest sandbox
Microsoft Foundry hosted agents: 2 vCPU · 4 GiB
Upstash Box: 8 vCPU · 16 GiB
Concurrent sandboxes
Microsoft Foundry hosted agents: Up to 2,000
Upstash Box: Up to 1,000
Isolation
Microsoft Foundry hosted agents: MicroVM
Upstash Box: Container
SDKs
Microsoft Foundry hosted agents: Python, JavaScript / TypeScript
Upstash Box: Python, TypeScript
Integrations
Microsoft Foundry hosted agents: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK
Upstash Box: LangChain, Vercel AI SDK, Claude Code, MCP

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Microsoft Foundry hosted agents: $0.0994
Upstash Box: $0.10
RAM, per GiB-hour
Microsoft Foundry hosted agents: $0.0118
Upstash Box: Included
Storage
Microsoft Foundry hosted agents: Not listed
Upstash Box: $0.10 per GB per month, including snapshots. Included on Fixed.
Free tier
Microsoft Foundry hosted agents: Not listed
Upstash Box: Free plan, 5 CPU hours per month
Paid plan from
Microsoft Foundry hosted agents: Pay as you go
Upstash Box: Pay as you go
Billing
Microsoft Foundry hosted agents: Per second
Upstash Box: Active CPU time only

Limits

Max session
Microsoft Foundry hosted agents: Not listed
Upstash Box: Not listed
Idle stop
Microsoft Foundry hosted agents: After 15 minutes
Upstash Box: After 360 minutes
Largest sandbox
Microsoft Foundry hosted agents: 2 vCPU · 4 GiB
Upstash Box: 8 vCPU · 16 GiB
Concurrent sandboxes
Microsoft Foundry hosted agents: Up to 2,000
Upstash Box: Up to 1,000

Platform

Isolation
Microsoft Foundry hosted agents: MicroVM
Upstash Box: Container
GPU
Microsoft Foundry hosted agents: Not listed
Upstash Box: Not listed
Snapshots
Microsoft Foundry hosted agents: Not listed
Upstash Box:
Pause and resume
Microsoft Foundry hosted agents:
Upstash Box:

Developer

SDKs
Microsoft Foundry hosted agents: Python, JavaScript / TypeScript
Upstash Box: Python, TypeScript
Integrations
Microsoft Foundry hosted agents: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK
Upstash Box: LangChain, Vercel AI SDK, Claude Code, MCP

Trust

License
Microsoft Foundry hosted agents: Not listed
Upstash Box: Not listed
BYOC
Microsoft Foundry hosted agents: Not listed
Upstash Box: Not listed

Hourly cost

One sandbox running for one hour

Microsoft Foundry hosted agents
Upstash Box
1 vCPU · 2 GiB
Microsoft Foundry hosted agents: $0.123
Upstash Box: $0.100
2 vCPU · 4 GiB
Microsoft Foundry hosted agents: $0.246
Upstash Box: $0.200
4 vCPU · 8 GiB
Microsoft Foundry hosted agents: $0.492
Upstash Box: $0.400

Compute only, at list rates.

Open the calculator

Which one fits

Based on the fields above

Microsoft Foundry hosted agents fits when

  • You want each sandbox in its own microVM.
  • You use the Claude Agent SDK or the OpenAI Agents SDK.

Upstash Box fits when

  • You use the Vercel AI SDK or Claude Code.
  • You want the lower list price: $0.200 against $0.246 an hour for 2 vCPU and 4 GiB.
  • You need snapshots.
  • Your code waits a lot: CPU is billed only while it is in use.

More comparisons

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