Celesto cloud computer sizes and pricing

A Celesto cloud computer size sets how much processing power, memory, and disk space your computer gets, and what it costs per hour. Choose a size before the computer starts. Start with Micro for small jobs, then move to a bigger size when your agent builds code, installs packages, opens large files, or runs a web app. A computer’s root disk and its workspace storage both keep your data, but they serve different jobs. The root disk holds the operating system and tools, and its size comes with the computer size you choose. Use CelestoFS workspace storage for large project files, repositories, datasets, and artifacts. See Petabyte-scale storage for AI agent sandboxes.

Start with a template

A template is a ready-made starting setup for a computer. It includes an operating system, useful tools, and default resource sizes. Use coding-agent when your workflow needs common coding tools preinstalled. To start every computer with your own packages, build a custom template. Use the template defaults when you are running quick scripts or trying Celesto for the first time. List the available templates and their default CPU and memory:

from celesto import Computer


templates = Computer.list_templates()

for template in templates:
    print(
        f"{template['id']}: "
        f"{template['default_vcpus']} CPU, "
        f"{template['default_ram_mb']} MB memory"
    )

import { Computer } from "@celestoai/sdk";

const templates = await Computer.listTemplates();

for (const template of templates) {
  console.log(
    `${template.id}: ${template.defaultVcpus} CPU, ${template.defaultRamMb} MB memory`,
  );
}

celesto computer templates

Choose a named size

CPU and memory must match one of these named sizes. Each size includes a fixed root disk for the operating system and tools. A vCPU is a virtual CPU core.

Size	CPU	Memory	Root disk	Price
Micro (default)	1 vCPU	2 GB	20 GB	$0.015/hour
Small	1 vCPU	4 GB	25 GB	$0.020/hour
Standard	2 vCPU	4 GB	30 GB	$0.030/hour
Memory	2 vCPU	8 GB	40 GB	$0.040/hour
Large	4 vCPU	16 GB	60 GB	$0.080/hour
XL	8 vCPU	32 GB	100 GB	$0.160/hour

The free trial includes Micro only. Add credit to your account to unlock the other sizes. See Celesto pricing for current rates and trial details. Omit both cpus and memory to use the template default. When you set them, choose both values from the same size in the table. Mixed combinations such as 2 vCPU with 2 GB memory are rejected.

integer

CPU value from a named size. Use together with the matching memory value.

integer

Memory in MB from a named size. Use together with the matching cpus value.

integer

Root disk storage inside the computer in MB. Each named size includes a fixed root disk, such as 30720 (30 GB) for Standard, so you can leave this out. If you set it, use the value from the same row as cpus and memory. For large workspace files, use CelestoFS.

string

default:"scratch"

Ready-made starting setup for the computer. Use coding-agent when your agent needs coding tools already installed.

Create a larger Celesto cloud computer

Create a larger computer when the default template does not have enough room for the job. This example creates a Standard coding-agent computer with 2 CPUs and 4096 MB of memory. Standard includes a 30 GB root disk.

from celesto import Computer


computer = Computer(
    template_id="coding-agent",
    cpus=2,
    memory=4096,
)

print(computer.name)
print(f"{computer.vcpus} CPU")
print(f"{computer.ram_mb} MB memory")
print(f"{computer.disk_size_mb} MB disk")

computer.delete()

import { Computer } from "@celestoai/sdk";

const computer = await Computer.create({
  templateId: "coding-agent",
  cpus: 2,
  memory: 4096,
});

console.log(computer.name);
console.log(`${computer.vcpus} CPU`);
console.log(`${computer.ramMb} MB memory`);
console.log(`${computer.diskSizeMb} MB disk`);

await computer.delete();

celesto computer create --template coding-agent --cpus 2 --memory 4096

The response shows the CPU, memory, and disk size assigned to the new computer.

Pick a computer size for your workload

Use the smallest computer that can finish the job. Increase the setting that matches the problem you see.

Workload	Start with
Quick shell commands	Micro or template defaults
Coding agent with package installs	Standard `coding-agent`
Large repository builds	Large, plus CelestoFS workspace storage
Data processing or notebooks	Memory or Large, plus CelestoFS workspace storage
Hosted preview app	Standard, plus port publishing

Move to the next named size when builds are slow, programs run out of memory, or system tools run out of disk space. Each larger size also includes a larger root disk. Use CelestoFS for large workspace files.

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Reference and troubleshooting

Celesto cloud computer sizes and pricing

Start with a template

Choose a named size

Create a larger Celesto cloud computer

Pick a computer size for your workload

​Start with a template

​Choose a named size

​Create a larger Celesto cloud computer

​Pick a computer size for your workload

Start with a template

Choose a named size

Create a larger Celesto cloud computer

Pick a computer size for your workload