> ## Documentation Index
> Fetch the complete documentation index at: https://docs.anonalabs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Regions and limits

> Where sandboxes run and how many you can have.

## Region

Sandboxes run in AWS `us-east-1` (N. Virginia). The API, the dashboard and live view are served from the same region. **Coming soon:** more regions.

## Plan limits

> [!NOTE]
>
> Preview values. They will change before general availability.

| Limit | Free | Paid |
| - | - | - |
| Running sandboxes at once | 2 | 100 |
| Paused sandboxes kept | 5 | 200 |
| Longest timeout | 1 hour | No maximum (`timeout=-1` allowed) |
| Public internet egress | Off | On by default |
| API keys | 2 | 20 |
| Templates you build | 20 | 20 |
| Template builds at once | 2 | 2 |
| Included credit | \$5 | none |

What the gateway answers when you hit one:

| Situation | Response |
| - | - |
| Creating more running sandboxes than your plan allows | `429` with `error_code` `sandbox_quota_exceeded` |
| Pausing beyond the paused limit | `429` |
| A timeout above your plan's maximum | `400`, naming the limit |
| Creating an API key beyond the limit | `429` |

Per-sandbox size limits, per-minute create rates and request rates exist in the plans but are not enforced by the gateway yet. Sandbox size comes from the [template](https://docs.anonalabs.com/compute/concepts/templates.md).

## Cold starts

When no sandbox has run for a while, the sandbox servers are stopped to save cost. The next create waits while one starts (up to 60 s); if that takes longer, the API answers `503` with `Retry-After: 30` and the SDK retries. Paused sandboxes do not need a running server until you resume them.

> [!NOTE]
>
> How long a cold start takes on the production fleet has not been measured yet, so the preview has no published create or resume latency. On the engine's test hosts a resume took 0.8 to 0.9 s.


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