Pay by the second, for real machines
Billing runs from the moment a machine is assigned until a stop begins, and a size costs the same on every tier. Each plan's price comes back as machine time, a stopped disk is free for 14 days, and egress is free.
Rate card
Four preset sizes, each a full VM with its own kernel. Custom shapes cost the same per vCPU and per GB as the preset they sit between.
| Size | Shape | Per hour | Always on, per month | Runs on |
|---|---|---|---|---|
| small | 2 vCPU · 4 GB · 51 GB | $0.01782 | $13.01 | Trial and every plan |
| default | 4 vCPU · 8 GB · 51 GB | $0.03564 | $26.02 | Trial and every plan |
| large | 8 vCPU · 16 GB · 111 GB | $0.07128 | $52.03 | Every plan |
| xlarge | 16 vCPU · 32 GB · 251 GB | $0.198 | $144.54 | Team plan and up |
Dollars per hour, billed per second. "Always on" is 730 hours. xlarge runs on 16 dedicated host threads. Shared, Spot and one-year Reserved cost the same for every size. Rate card of 2026-11-07.
Estimate your month
Machine time, and the smallest plan that runs it. Sleeping counts as running; stopped sandboxes cost nothing for 14 days.
Plans
Each plan's price comes back as machine time at list rates, and unused time expires at the end of the month. A seat costs the plan price. The wallet pays for anything beyond the plan.
| Plan | Per month | Running at once | Starts per min / hour / day | Saved templates |
|---|---|---|---|---|
| Build | $20 | 100 | 12 / 60 / 200 | 10 |
| Team | $100 | 300 | 30 / 210 / 840 | 50 |
| Scale | $500 | 1,000 | 65 / 420 / 1,680 | 250 |
| Fleet | $2,000 | 2,000 | 90 / 600 / 2,400 | 1,000 |
Free trial
7 days with a card: 25 hours, 2 sandboxes at once, small and default sizes. Nothing is charged until it ends; then it becomes the Build plan unless you cancel.
Extra starts
Starts beyond your plan cost $0.03 to $0.07 each from the wallet, or can wait in a free queue instead.
Saved templates
Each plan includes some; each one beyond that costs $0.056 a day.
Credentials proxy
$1 a day while on, plus $1 per 1,000 requests.
Wallet bonus
Wallet payments of $200 and up earn a bonus of 2% to 25%, so prepaying buys more machine time.
Free egress
Traffic out isn't billed. Published per-vCPU abuse limits apply to disk and network.
What we don't do
Clear prices are part of the product.
- No egress fees: traffic out of a sandbox is free.
- No regional uplift: one region, the EU, at one price.
- Spot and one-year Reserved cost exactly what Shared costs, so neither is a hidden saving or a trap.
- Saving time when a sandbox stops isn't billed.
- Stopped disks are never deleted for idleness alone; after 14 days they move to paid cold storage.
- No runaway bills: hard dollar budgets on an account, project, fleet, label or API key act when they're reached.
Is this a live service?
No. It's a working local build and a specification.
Can I run real VMs?
With KVM and the Cloud Hypervisor adapter. Otherwise the labelled simulator runs, and every response says simulated: true.
Does sleep lose my programs?
No, that's the point. Open connections may break, and timers inside the VM don't fire.
Is a sleeping sandbox billed?
Yes, like a running one, and it still stops at its auto-stop. Stop it to end the bill.
How long is a stopped disk kept?
At least 14 days for free, then it moves to paid cold storage. It's never deleted because of idleness alone.
What does it cost?
The default size, 4 vCPU and 8 GB, is $0.03564 an hour, billed per second, at the same price on every tier. Plans start at $20 a month, and every plan dollar comes back as machine time. Egress is free. See Pricing.
Is there a free trial?
Yes: 7 days with a card, including 25 hours of machine time and 2 sandboxes at once on the small and default sizes. Nothing is charged until day 7. See Free trial.
Can I copy a running sandbox?
Yes. harebox fork copies it exactly, memory included, and each copy gets a new identity, IP addresses, host keys and entropy. See Parallel agents.
Where does my data live?
In the EU. HareBox launches in France, at Roubaix and Gravelines, and places each sandbox itself. Data, including snapshots, stays in the EU.