AWS Lambda MicroVMs vs Sailboxes

AWS Lambda MicroVMs costs $0.0997 per vCPU-hour and Sailboxes costs $0.015 per vCPU-hour. AWS Lambda MicroVMs runs Firecracker microVMs and limits a session to 8 hours. Sailboxes runs full VMs and has no session limit.

Updated Oct 14, 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

Sailboxes

Persistent Linux VMs for long-horizon AI agents.

Isolation: Full VM
Free tier: $5 credit every month
Max session: No limit

Visit site Sailboxes profile

What is different

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

Field

AWS Lambda MicroVMs

Sailboxes

vCPU, per hour: AWS Lambda MicroVMs: $0.0997; Sailboxes: $0.015
RAM, per GiB-hour: AWS Lambda MicroVMs: $0.0132; Sailboxes: $0.008
Storage: AWS Lambda MicroVMs: Snapshot storage $0.08 per GB-month (US East). Snapshot reads and writes are billed per GB.; Sailboxes: $0.0007 per GiB-hour
Max session: AWS Lambda MicroVMs: 8 hours; Sailboxes: No limit
Isolation: AWS Lambda MicroVMs: Firecracker microVM; Sailboxes: Full VM
SDKs: AWS Lambda MicroVMs: Python, JavaScript; Sailboxes: Python, TypeScript, Rust

Full comparison

18 fields, at each provider's list price

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

Sailboxesdocs.sailresearch.com/sailboxes-pricingdocs.sailresearch.com

Pricing

vCPU, per hour: AWS Lambda MicroVMs: $0.0997; Sailboxes: $0.015
RAM, per GiB-hour: AWS Lambda MicroVMs: $0.0132; Sailboxes: $0.008
Storage: AWS Lambda MicroVMs: Snapshot storage $0.08 per GB-month (US East). Snapshot reads and writes are billed per GB.; Sailboxes: $0.0007 per GiB-hour
Free tier: AWS Lambda MicroVMs: Not listed; Sailboxes: $5 credit every month
Paid plan from: AWS Lambda MicroVMs: Not listed; Sailboxes: Pay as you go
Billing: AWS Lambda MicroVMs: Per second; Sailboxes: Per second

Limits

Max session: AWS Lambda MicroVMs: 8 hours; Sailboxes: No limit
Idle stop: AWS Lambda MicroVMs: Not listed; Sailboxes: Not listed
Largest sandbox: AWS Lambda MicroVMs: 4 vCPU · 8 GiB; Sailboxes: Not listed
Concurrent sandboxes: AWS Lambda MicroVMs: Not listed; Sailboxes: Up to 5,000

Platform

Isolation: AWS Lambda MicroVMs: Firecracker microVM; Sailboxes: Full VM
GPU: AWS Lambda MicroVMs: Not listed; Sailboxes: Not listed
Snapshots: AWS Lambda MicroVMs:; Sailboxes:
Pause and resume: AWS Lambda MicroVMs:; Sailboxes:

Developer

SDKs: AWS Lambda MicroVMs: Python, JavaScript; Sailboxes: Python, TypeScript, Rust
Integrations: AWS Lambda MicroVMs: Not listed; Sailboxes: Claude Code

Trust

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

Hourly cost

One sandbox running for one hour

Size

AWS Lambda MicroVMs

Sailboxes

1 vCPU · 2 GiB: AWS Lambda MicroVMs: $0.126; Sailboxes: $0.031
2 vCPU · 4 GiB: AWS Lambda MicroVMs: $0.252; Sailboxes: $0.062
4 vCPU · 8 GiB: AWS Lambda MicroVMs: $0.504; Sailboxes: $0.124

Compute only, at list rates.

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Which one fits

Based on the fields above

AWS Lambda MicroVMs fits when

You want each sandbox in its own microVM.

Sailboxes fits when

A session must run longer than 8 hours.
You want each sandbox to be a full VM.
You use Claude Code.
You want the lower list price: $0.062 against $0.252 an hour for 2 vCPU and 4 GiB.

More comparisons

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AWS Lambda MicroVMs

Sailboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

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Sailboxes fits when

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