# Sizes

| Size | vCPU | RAM | Disk |
|---|---:|---:|---:|
| `small` | 2 | 4 GB | 51 GB |
| `default` | 4 | 8 GB | 51 GB |
| `large` | 8 | 16 GB | 111 GB |
| `xlarge` | 16 | 32 GB | 251 GB |

Every size is billed per second, at one price on every tier. `xlarge` needs the Team plan or larger, and the trial runs `small` and `default` only.

`small` to `large` share their host's CPU: up to 5 vCPU per thread and 1.75× RAM, published live. `xlarge`, and any custom size above 8 vCPU or 16 GB, gets dedicated threads instead: its vCPUs are host threads of its own, 1:1, never shared with another sandbox. Its RAM comes from the host's pool like every other size's, at the same published ratio.

Custom sizes: `--size 3c5g`, from 1 to 64 vCPU and 1 to 256 GB of RAM. Up to 8 vCPU and 16 GB they cost $0.004455 per vCPU and $0.0022275 per GB of RAM per hour; larger ones cost $0.0061875 and $0.00309375, and need the plan that allows `xlarge`.

```sh
harebox new --name custom-size --size 3c5g --max-cost 0.05
```

`--max-cost` refuses anything above your hourly limit.

Published density, sites and restore targets are at `harebox regions`. There is one region, the EU.