Celesto Cloud vs xShellz Agent Shell

Celesto Cloud costs $0.015 per vCPU-hour. Celesto Cloud runs microVMs. xShellz Agent Shell runs gVisor and has no session limit.

Updated Oct 23, 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

xShellz Agent Shell

Always-on Linux boxes for AI agents, isolated with gVisor.

Isolation: gVisor
Free tier: Free plan, 1 box with 0.5 vCPU and 512 MB
Max session: No limit

Visit site xShellz Agent Shell profile

What is different

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

Field

Celesto Cloud

xShellz Agent Shell

Free tier: Celesto Cloud: $5 runtime credit, one time, 30 days; xShellz Agent Shell: Free plan, 1 box with 0.5 vCPU and 512 MB
Paid plan from: Celesto Cloud: Pay as you go; xShellz Agent Shell: $10 / month
Largest sandbox: Celesto Cloud: 8 vCPU · 32 GiB; xShellz Agent Shell: 4 vCPU · 4 GiB
Concurrent sandboxes: Celesto Cloud: Up to 10; xShellz Agent Shell: Up to 5
Isolation: Celesto Cloud: MicroVM; xShellz Agent Shell: gVisor
SDKs: Celesto Cloud: Python, JavaScript / TypeScript; xShellz Agent Shell: Python, JavaScript / TypeScript, Go, Java, Ruby, Rust
Integrations: Celesto Cloud: MCP, OpenAI Agents SDK, Claude Code; xShellz Agent Shell: MCP, Claude Code

Full comparison

18 fields, at each provider's list price

Celesto Cloudcelesto.ai/pricing

xShellz Agent Shellxshellz.com/pricingxshellz.com

Pricing

vCPU, per hour: Celesto Cloud: $0.015; xShellz Agent Shell: Not listed
RAM, per GiB-hour: Celesto Cloud: Included; xShellz Agent Shell: Included
Storage: Celesto Cloud: Free; xShellz Agent Shell: Free
Free tier: Celesto Cloud: $5 runtime credit, one time, 30 days; xShellz Agent Shell: Free plan, 1 box with 0.5 vCPU and 512 MB
Paid plan from: Celesto Cloud: Pay as you go; xShellz Agent Shell: $10 / month
Billing: Celesto Cloud: Bundled machine time; xShellz Agent Shell: Bundled machine time

Limits

Max session: Celesto Cloud: Not listed; xShellz Agent Shell: No limit
Idle stop: Celesto Cloud: Not listed; xShellz Agent Shell: Not listed
Largest sandbox: Celesto Cloud: 8 vCPU · 32 GiB; xShellz Agent Shell: 4 vCPU · 4 GiB
Concurrent sandboxes: Celesto Cloud: Up to 10; xShellz Agent Shell: Up to 5

Platform

Isolation: Celesto Cloud: MicroVM; xShellz Agent Shell: gVisor
GPU: Celesto Cloud: Not listed; xShellz Agent Shell: Not listed
Snapshots: Celesto Cloud:; xShellz Agent Shell: Not listed
Pause and resume: Celesto Cloud:; xShellz Agent Shell:

Developer

SDKs: Celesto Cloud: Python, JavaScript / TypeScript; xShellz Agent Shell: Python, JavaScript / TypeScript, Go, Java, Ruby, Rust
Integrations: Celesto Cloud: MCP, OpenAI Agents SDK, Claude Code; xShellz Agent Shell: MCP, Claude Code

Trust

License: Celesto Cloud: Apache-2.0; xShellz Agent Shell: Not listed
BYOC: Celesto Cloud: Not listed; xShellz Agent Shell: Not listed

Hourly cost

One sandbox running for one hour

Size

Celesto Cloud

xShellz Agent Shell

1 vCPU · 2 GiB: Celesto Cloud: $0.015; xShellz Agent Shell: Not listed
2 vCPU · 4 GiB: Celesto Cloud: $0.030; xShellz Agent Shell: Not listed
4 vCPU · 8 GiB: Celesto Cloud: $0.060; xShellz Agent Shell: Not listed

Compute only, at list rates.

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Which one fits

Based on the fields above

Celesto Cloud fits when

You want to pay only for usage, with no plan fee.
You want each sandbox in its own microVM.
You want an open-source platform (Apache-2.0).
You use the OpenAI Agents SDK.

xShellz Agent Shell fits when

You need GDPR.

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Celesto Cloud

xShellz Agent Shell

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Celesto Cloud fits when

xShellz Agent Shell fits when

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