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

# Nano Banana Pro (gemini-3-pro-image-preview) is re…

> Nano Banana Pro (gemini-3-pro-image-preview) is returning 503 — this is Google upstream high-demand, not a platform issue; our Google develo…

**2026/4/21 15:37 (UTC+8)** · Model Status · Google

🌐 Nano Banana Pro (`gemini-3-pro-image-preview`) is returning 503 — this is Google upstream high-demand, not a platform issue; our Google developer accounts and keys are all healthy. Nano Banana 2 (`gemini-3.1-flash-image-preview`) is running normally — consider switching to it or retry shortly.

```json theme={null}
{
  "status_code": 503,
  "error": {
    "message": "This model is currently experiencing high demand. Spikes in demand are usually temporary. Please try again later. (request id: 2026042115313222747473267703880)",
    "type": "shell_api_error",
    "code": 503
  }
}
```

***

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