Koyeb Sandboxes

provider: "koyeb"

Not taking new accounts: Koyeb is joining Mistral; a new account's dashboard only shows that notice, with no way to create sandboxes or tokens. Existing accounts are unaffected. Checked 2026-11-05.

Per second; fixed Standard instance sizes (1 vCPU + 1 GB = $0.0144/h); sandboxes need a paid plan (Pro $29/mo); public preview.

List price per hour

1 vCPU · 2 GB	$0.029
2 vCPU · 4 GB	$0.058
4 vCPU · 8 GB	$0.115
8 vCPU · 16 GB	$0.230
16 vCPU · 32 GB	$0.461
32 vCPU · 128 GB	$1.84

Source: www.koyeb.com, 2026-11-04 (an estimate, not a bill)
Billing: the size you ask for, while it runs
Plan: $29/mo: sandboxes need a paid plan; Pro includes $10 of compute

Adapter

Supports: Exec + streaming · Files · Custom image
Max size: 40 vCPU · 128 GB
Routing: Chosen when it's the cheapest fit, if you already have a key
Docs: www.koyeb.com

Measured on real accounts

Real-account check: not run yet; tested against a mock of its API only
Cold start: not measured; no benchmark run yet
Succeeded: not measured; no benchmark run yet
Size you get: not measured; no cost run yet
Billed vs list price: not measured; no cost run yet

Help verify Koyeb Sandboxes

Have a Koyeb Sandboxes account? These run real sandboxes on it, for a few cents at most, and write result files that fill in the blanks above. Results never include your keys. Run them in a clone of the repo and open a pull request with the files: CI checks every file for keys and impossible numbers, and a maintainer reviews each one before it shows here.

terminal

npx @sandboxrouter/sdk check --provider koyeb --save --by YOUR_GITHUB_USERNAME
npx @sandboxrouter/sdk bench --provider koyeb --runs 5 --share --label "your city or cloud region" --by YOUR_GITHUB_USERNAME
npx @sandboxrouter/sdk cost run --provider koyeb --minutes 10 --by YOUR_GITHUB_USERNAME

Real-account check, step by step

Not run on a real account yet; the adapter is tested against a mock of Koyeb Sandboxes's API.

setup

npm i @sandboxrouter/sdk
export KOYEB_API_TOKEN=...

use Koyeb Sandboxes

import { Router } from "@sandboxrouter/sdk";

const router = new Router();
const sbx = await router.create({}, { provider: "koyeb" });
await sbx.exec("uname -a", { onStdout: (c) => process.stdout.write(c) });
await sbx.kill();