Microsoft Foundry hosted agents vs Watasu

Microsoft Foundry hosted agents costs $0.0994 per vCPU-hour. Microsoft Foundry hosted agents runs microVMs. Watasu limits a session to 24 hours.

Updated Oct 23, 2026

Microsoft Foundry hosted agents

Runs your AI agent code on Azure, with each session in its own microVM.

Isolation: MicroVM
Free tier: Not listed
Max session: Not listed

Visit site Microsoft Foundry hosted agents profile

Watasu

Isolated Linux sandboxes for AI agents, hosted in the EU.

Isolation: Not listed
Free tier: Free Basic plan
Max session: 24 hours

Visit site Watasu profile

What is different

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

Field

Microsoft Foundry hosted agents

Watasu

Largest sandbox: Microsoft Foundry hosted agents: 2 vCPU · 4 GiB; Watasu: 8 vCPU · 8 GiB
Concurrent sandboxes: Microsoft Foundry hosted agents: Up to 2,000; Watasu: Up to 100
SDKs: Microsoft Foundry hosted agents: Python, JavaScript / TypeScript; Watasu: Python, TypeScript, Rust
Integrations: Microsoft Foundry hosted agents: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK; Watasu: MCP, Claude Code

Full comparison

18 fields, at each provider's list price

Microsoft Foundry hosted agentsazure.microsoft.com/en-us/pricing/details/foundry-agent-serviceazure.microsoft.com

Watasuwatasu.io/pricing

Pricing

vCPU, per hour: Microsoft Foundry hosted agents: $0.0994; Watasu: Not listed
RAM, per GiB-hour: Microsoft Foundry hosted agents: $0.0118; Watasu: Not listed
Storage: Microsoft Foundry hosted agents: Not listed; Watasu: Retained disks €0.10 per GiB per month while the sandbox is stopped. Checkpoints and templates €0.03 per GiB per month.
Free tier: Microsoft Foundry hosted agents: Not listed; Watasu: Free Basic plan
Paid plan from: Microsoft Foundry hosted agents: Pay as you go; Watasu: Not listed
Billing: Microsoft Foundry hosted agents: Per second; Watasu: Per second

Limits

Max session: Microsoft Foundry hosted agents: Not listed; Watasu: 24 hours
Idle stop: Microsoft Foundry hosted agents: After 15 minutes; Watasu: Not listed
Largest sandbox: Microsoft Foundry hosted agents: 2 vCPU · 4 GiB; Watasu: 8 vCPU · 8 GiB
Concurrent sandboxes: Microsoft Foundry hosted agents: Up to 2,000; Watasu: Up to 100

Platform

Isolation: Microsoft Foundry hosted agents: MicroVM; Watasu: Not listed
GPU: Microsoft Foundry hosted agents: Not listed; Watasu: Not listed
Snapshots: Microsoft Foundry hosted agents: Not listed; Watasu:
Pause and resume: Microsoft Foundry hosted agents:; Watasu:

Developer

SDKs: Microsoft Foundry hosted agents: Python, JavaScript / TypeScript; Watasu: Python, TypeScript, Rust
Integrations: Microsoft Foundry hosted agents: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK; Watasu: MCP, Claude Code

Trust

License: Microsoft Foundry hosted agents: Not listed; Watasu: Not listed
BYOC: Microsoft Foundry hosted agents: Not listed; Watasu: Not listed

Hourly cost

One sandbox running for one hour

Size

Microsoft Foundry hosted agents

Watasu

1 vCPU · 2 GiB: Microsoft Foundry hosted agents: $0.123; Watasu: Not listed
2 vCPU · 4 GiB: Microsoft Foundry hosted agents: $0.246; Watasu: Not listed
4 vCPU · 8 GiB: Microsoft Foundry hosted agents: $0.492; Watasu: Not listed

Compute only, at list rates.

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Which one fits

Based on the fields above

Microsoft Foundry hosted agents fits when

You use the Claude Agent SDK, LangChain or the OpenAI Agents SDK.

Watasu fits when

You use Claude Code.
You need snapshots.
You need a sandbox larger than 2 vCPU · 4 GiB.

More comparisons

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Microsoft Foundry hosted agents

Watasu

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Microsoft Foundry hosted agents fits when

Watasu fits when

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