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

# Rate limits

> Request limits and quota behavior.

APIAny.AI applies API key validation, model access checks, credit checks, and rate limits before a model request runs.

When a request exceeds a configured limit, the API returns:

```json theme={null}
{
  "error": {
    "type": "rate_limit",
    "message": "Rate limit exceeded"
  }
}
```

Use separate API keys for different applications or environments so limits and usage remain easy to inspect.