AWS Lambda MicroVMs vs Watasu

AWS Lambda MicroVMs costs $0.0997 per vCPU-hour. AWS Lambda MicroVMs runs Firecracker microVMs and limits a session to 8 hours. Watasu limits a session to 24 hours.

Updated Oct 15, 2026

AWS Lambda MicroVMs

Serverless microVMs on AWS that suspend when idle.

Isolation: Firecracker microVM
Free tier: Not listed
Max session: 8 hours

Visit site AWS Lambda MicroVMs 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

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

Field

AWS Lambda MicroVMs

Watasu

Storage: AWS Lambda MicroVMs: Snapshot storage $0.08 per GB-month (US East). Snapshot write $0.0038 per GB. Snapshot read $0.00155 per GB.; Watasu: Retained disks €0.10 per GiB per month while the sandbox is stopped. Checkpoints and templates €0.03 per GiB per month.
Max session: AWS Lambda MicroVMs: 8 hours; Watasu: 24 hours
Largest sandbox: AWS Lambda MicroVMs: 4 vCPU · 8 GiB; Watasu: 8 vCPU · 8 GiB

Full comparison

18 fields, at each provider's list price

AWS Lambda MicroVMsaws.amazon.com/lambda/pricingaws.amazon.com

Watasuwatasu.io/pricing

Pricing

vCPU, per hour: AWS Lambda MicroVMs: $0.0997; Watasu: Not listed
RAM, per GiB-hour: AWS Lambda MicroVMs: $0.0132; Watasu: Not listed
Storage: AWS Lambda MicroVMs: Snapshot storage $0.08 per GB-month (US East). Snapshot write $0.0038 per GB. Snapshot read $0.00155 per GB.; 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: AWS Lambda MicroVMs: Not listed; Watasu: Free Basic plan
Paid plan from: AWS Lambda MicroVMs: Not listed; Watasu: Not listed
Billing: AWS Lambda MicroVMs: Per second; Watasu: Per second

Limits

Max session: AWS Lambda MicroVMs: 8 hours; Watasu: 24 hours
Idle stop: AWS Lambda MicroVMs: Not listed; Watasu: Not listed
Largest sandbox: AWS Lambda MicroVMs: 4 vCPU · 8 GiB; Watasu: 8 vCPU · 8 GiB
Concurrent sandboxes: AWS Lambda MicroVMs: Not listed; Watasu: Up to 100

Platform

Isolation: AWS Lambda MicroVMs: Firecracker microVM; Watasu: Not listed
GPU: AWS Lambda MicroVMs: Not listed; Watasu: Not listed
Snapshots: AWS Lambda MicroVMs:; Watasu:
Pause and resume: AWS Lambda MicroVMs:; Watasu:

Developer

SDKs: AWS Lambda MicroVMs: Python, JavaScript; Watasu: Not listed
Integrations: AWS Lambda MicroVMs: Not listed; Watasu: Not listed

Trust

License: AWS Lambda MicroVMs: Not listed; Watasu: Not listed
BYOC: AWS Lambda MicroVMs: Not listed; Watasu: Not listed

Hourly cost

One sandbox running for one hour

Size

AWS Lambda MicroVMs

Watasu

1 vCPU · 2 GiB: AWS Lambda MicroVMs: $0.126; Watasu: Not listed
2 vCPU · 4 GiB: AWS Lambda MicroVMs: $0.252; Watasu: Not listed
4 vCPU · 8 GiB: AWS Lambda MicroVMs: $0.504; Watasu: Not listed

Compute only, at list rates.

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Which one fits

Based on the fields above

Watasu fits when

A session must run longer than 8 hours.
You need a sandbox larger than 4 vCPU · 8 GiB.

More comparisons

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AWS Lambda MicroVMs

Watasu

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

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