AWS Lambda MicroVMs vs Phonebox

AWS Lambda MicroVMs costs $0.0997 per vCPU-hour. AWS Lambda MicroVMs runs Firecracker microVMs and limits a session to 8 hours. Phonebox limits a session to 3 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

Phonebox

Cloud Android phones that AI agents control through their screens.

Isolation: Not listed
Free tier: $2 starter credit, one time, no card
Max session: 3 hours

Visit site Phonebox profile

What is different

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

Field

AWS Lambda MicroVMs

Phonebox

Billing: AWS Lambda MicroVMs: Per second; Phonebox: Bundled machine time
Max session: AWS Lambda MicroVMs: 8 hours; Phonebox: 3 hours
SDKs: AWS Lambda MicroVMs: Python, JavaScript; Phonebox: TypeScript

Full comparison

18 fields, at each provider's list price

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

Phoneboxphonebox.dev/pricingphonebox.dev

Pricing

vCPU, per hour: AWS Lambda MicroVMs: $0.0997; Phonebox: Not listed
RAM, per GiB-hour: AWS Lambda MicroVMs: $0.0132; Phonebox: 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.; Phonebox: Not listed
Free tier: AWS Lambda MicroVMs: Not listed; Phonebox: $2 starter credit, one time, no card
Paid plan from: AWS Lambda MicroVMs: Not listed; Phonebox: Pay as you go
Billing: AWS Lambda MicroVMs: Per second; Phonebox: Bundled machine time

Limits

Max session: AWS Lambda MicroVMs: 8 hours; Phonebox: 3 hours
Idle stop: AWS Lambda MicroVMs: Not listed; Phonebox: After 5 minutes
Largest sandbox: AWS Lambda MicroVMs: 4 vCPU · 8 GiB; Phonebox: Not listed
Concurrent sandboxes: AWS Lambda MicroVMs: Not listed; Phonebox: Up to 5

Platform

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

Developer

SDKs: AWS Lambda MicroVMs: Python, JavaScript; Phonebox: TypeScript
Integrations: AWS Lambda MicroVMs: Not listed; Phonebox: MCP

Trust

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

Hourly cost

One sandbox running for one hour

Size

AWS Lambda MicroVMs

Phonebox

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

Compute only, at list rates.

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Which one fits

Based on the fields above

AWS Lambda MicroVMs fits when

A session must run longer than 3 hours.
You need snapshots.

Phonebox fits when

You use MCP.

More comparisons

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AWS Lambda MicroVMs

Phonebox

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

AWS Lambda MicroVMs fits when

Phonebox fits when

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