E2B

provider: "e2b"

Per second; free Hobby tier ($100 one-time credit, 1-hour sessions, 20 at once); Pro $150/mo for longer sessions.

Always runs at 2 vCPU / 0.5 GB unless you pass your own image (image.e2b), so the router only sends it work that fits.

List price per hour

1 vCPU · 2 GB	$0.109 at 2 vCPU · 0.5 GB only
2 vCPU · 4 GB	$0.109 at 2 vCPU · 0.5 GB only
4 vCPU · 8 GB	$0.109 at 2 vCPU · 0.5 GB only
8 vCPU · 16 GB	max 8 GB memory
16 vCPU · 32 GB	max 8 vCPU
32 vCPU · 128 GB	max 8 vCPU

Source: e2b.dev, 2026-11-04 (an estimate, not a bill)
Billing: the size you ask for, while it runs
Plan: none needed

Adapter

Supports: Exec + streaming · Files · Pause · Custom image · Desktops
Max size: 8 vCPU · 8 GB
Computers: linux
Routing: Chosen when it's the cheapest fit, or as a fallback
Docs: e2b.dev

Measured on real accounts

Real-account check: 14 / 14 steps; 2026-11-13
Cold start: 372 ms; median, 2 locations
Succeeded: 100%; of benchmark sandboxes
Size you get: 2 vCPU / 0.5 GB; asked for 2 vCPU / 4 GB
Billed vs list price: no billing API; 2026-11-06

Real-account check, step by step

14 of 14 steps passed on a real account, 2026-11-13 (v0.7.0).

createpassed
exec: stdout, stderr, exit codepassed
exec: env and cwdpassed
exec: UTF-8 outputpassed
exec: streamingpassed
files: binary round-trippassed
files: 1 MB round-trippassed
files: missing file is an errorpassed
files: visible to commandspassed
exec: command timeoutpassed
exec: timed-out command was stoppedpassed
pause and resumepassed
killpassed
killed sandbox is gonepassed

setup

npm i @sandboxrouter/sdk e2b
export E2B_API_KEY=...

use E2B

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

const router = new Router();
const sbx = await router.create({}, { provider: "e2b" });
await sbx.exec("uname -a", { onStdout: (c) => process.stdout.write(c) });
await sbx.kill();