Phonebox vs Sailboxes

Sailboxes costs $0.015 per vCPU-hour. Phonebox limits a session to 3 hours. Sailboxes runs full VMs and has no session limit.

Updated Oct 15, 2026

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

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

Phonebox

Sailboxes

Free tier: Phonebox: $2 starter credit, one time, no card; Sailboxes: $5 credit every month
Billing: Phonebox: Bundled machine time; Sailboxes: Per second
Max session: Phonebox: 3 hours; Sailboxes: No limit
Concurrent sandboxes: Phonebox: Up to 5; Sailboxes: Up to 5,000
SDKs: Phonebox: TypeScript; Sailboxes: Python, TypeScript, Rust
Integrations: Phonebox: MCP; Sailboxes: Claude Code

Full comparison

18 fields, at each provider's list price

Phoneboxphonebox.dev/pricingphonebox.dev

Sailboxesdocs.sailresearch.com/pricingdocs.sailresearch.com

Pricing

vCPU, per hour: Phonebox: Not listed; Sailboxes: $0.015
RAM, per GiB-hour: Phonebox: Not listed; Sailboxes: $0.008
Storage: Phonebox: Not listed; Sailboxes: $0.0007 per GiB-hour
Free tier: Phonebox: $2 starter credit, one time, no card; Sailboxes: $5 credit every month
Paid plan from: Phonebox: Pay as you go; Sailboxes: Pay as you go
Billing: Phonebox: Bundled machine time; Sailboxes: Per second

Limits

Max session: Phonebox: 3 hours; Sailboxes: No limit
Idle stop: Phonebox: After 5 minutes; Sailboxes: Not listed
Largest sandbox: Phonebox: Not listed; Sailboxes: 8 vCPU · 256 GiB
Concurrent sandboxes: Phonebox: Up to 5; Sailboxes: Up to 5,000

Platform

Isolation: Phonebox: Not listed; Sailboxes: Full VM
GPU: Phonebox: Not listed; Sailboxes: Not listed
Snapshots: Phonebox: Not listed; Sailboxes:
Pause and resume: Phonebox:; Sailboxes:

Developer

SDKs: Phonebox: TypeScript; Sailboxes: Python, TypeScript, Rust
Integrations: Phonebox: MCP; Sailboxes: Claude Code

Trust

License: Phonebox: Not listed; Sailboxes: Not listed
BYOC: Phonebox: Not listed; Sailboxes: Not listed

Hourly cost

One sandbox running for one hour

Size

Phonebox

Sailboxes

1 vCPU · 2 GiB: Phonebox: Not listed; Sailboxes: $0.031
2 vCPU · 4 GiB: Phonebox: Not listed; Sailboxes: $0.062
4 vCPU · 8 GiB: Phonebox: Not listed; Sailboxes: $0.124

Compute only, at list rates.

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Which one fits

Based on the fields above

Phonebox fits when

You use MCP.

Sailboxes fits when

A session must run longer than 3 hours.
You use Claude Code.
You want the larger free credit: $5 against $2.
You need snapshots.

More comparisons

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Phonebox

Sailboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Phonebox fits when

Sailboxes fits when

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