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Nano Banana 2


Provider	Google
Model name	`Nano-Banana-2`
Endpoint	`/v1/chat/completions`
Result	Markdown image content in `choices[0].message.content`
Pricing	See HiAPI Pricing

Nano Banana 2 balances speed, visual quality, and production throughput. It is a good default when you need repeated brand, social, or campaign assets.

Key Parameters

Parameter	Type	Notes
`model`	string	Use `Nano-Banana-2`
`messages`	array	Put the prompt in a user message
`extra_body.google.image_config.aspect_ratio`	string	Common values include `1:1`, `16:9`, `9:16`, `4:3`
`extra_body.google.image_config.image_size`	string	Common values include `1K` and `2K`
`stream`	boolean	Set to `false` for a complete image response

Example

curl -X POST https://api.hiapi.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "Nano-Banana-2",
    "stream": false,
    "messages": [{"role": "user", "content": "Design a premium coffee brand social poster with a cold brew glass and minimal typography"}],
    "extra_body": {
      "google": {
        "image_config": {"aspect_ratio": "4:3", "image_size": "2K"}
      }
    }
  }'

Next Steps