Celesto Cloud vs Sailboxes

Celesto Cloud costs $0.015 per vCPU-hour and Sailboxes costs $0.015 per vCPU-hour. Celesto Cloud runs microVMs. Sailboxes runs full VMs and has no session limit.

Updated Oct 14, 2026

Celesto Cloud

Cloud computers for AI agents, each in a microVM.

Isolation: MicroVM
Free tier: $5 runtime credit, one time, 30 days
Max session: Not listed

Visit site Celesto Cloud 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

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

Field

Celesto Cloud

Sailboxes

RAM, per GiB-hour: Celesto Cloud: Included; Sailboxes: $0.008
Storage: Celesto Cloud: Free; Sailboxes: $0.0007 per GiB-hour
Free tier: Celesto Cloud: $5 runtime credit, one time, 30 days; Sailboxes: $5 credit every month
Billing: Celesto Cloud: Bundled machine time; Sailboxes: Per second
Concurrent sandboxes: Celesto Cloud: Up to 10; Sailboxes: Up to 5,000
Isolation: Celesto Cloud: MicroVM; Sailboxes: Full VM
SDKs: Celesto Cloud: Python, JavaScript / TypeScript; Sailboxes: Python, TypeScript, Rust

Full comparison

18 fields, at each provider's list price

Celesto Cloudcelesto.ai/pricing

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

Pricing

vCPU, per hour: Celesto Cloud: $0.015; Sailboxes: $0.015
RAM, per GiB-hour: Celesto Cloud: Included; Sailboxes: $0.008
Storage: Celesto Cloud: Free; Sailboxes: $0.0007 per GiB-hour
Free tier: Celesto Cloud: $5 runtime credit, one time, 30 days; Sailboxes: $5 credit every month
Paid plan from: Celesto Cloud: Pay as you go; Sailboxes: Pay as you go
Billing: Celesto Cloud: Bundled machine time; Sailboxes: Per second

Limits

Max session: Celesto Cloud: Not listed; Sailboxes: No limit
Idle stop: Celesto Cloud: Not listed; Sailboxes: Not listed
Largest sandbox: Celesto Cloud: 8 vCPU · 32 GiB; Sailboxes: Not listed
Concurrent sandboxes: Celesto Cloud: Up to 10; Sailboxes: Up to 5,000

Platform

Isolation: Celesto Cloud: MicroVM; Sailboxes: Full VM
GPU: Celesto Cloud: Not listed; Sailboxes: Not listed
Snapshots: Celesto Cloud:; Sailboxes:
Pause and resume: Celesto Cloud:; Sailboxes:

Developer

SDKs: Celesto Cloud: Python, JavaScript / TypeScript; Sailboxes: Python, TypeScript, Rust
Integrations: Celesto Cloud: MCP, OpenAI Agents SDK; Sailboxes: Not listed

Trust

License: Celesto Cloud: Apache-2.0; Sailboxes: Not listed
BYOC: Celesto Cloud: Not listed; Sailboxes: Not listed

Hourly cost

One sandbox running for one hour

Size

Celesto Cloud

Sailboxes

1 vCPU · 2 GiB: Celesto Cloud: $0.015; Sailboxes: $0.031
2 vCPU · 4 GiB: Celesto Cloud: $0.030; Sailboxes: $0.062
4 vCPU · 8 GiB: Celesto Cloud: $0.060; Sailboxes: $0.124

Compute only, at list rates.

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Which one fits

Based on the fields above

Celesto Cloud fits when

You want each sandbox in its own microVM.
You want an open-source platform (Apache-2.0).
You use MCP or the OpenAI Agents SDK.
You want the lower list price: $0.030 against $0.062 an hour for 2 vCPU and 4 GiB.

Sailboxes fits when

You want each sandbox to be a full VM.
You need SOC 2 and HIPAA.

More comparisons

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Celesto Cloud

Sailboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Celesto Cloud fits when

Sailboxes fits when

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