API reference · Google

google/gemini-nano-banana-2.1

Integrate this model through SandBase's unified API, with production-ready schemas and examples.

LLMSynchronousOpen model

Production endpoint

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OpenAI-compatible endpoint with unified authentication and usage tracking.

POSThttps://api.sandbase.ai/v1beta/models/google/gemini-nano-banana-2.1:generateContent

Model IDgoogle/gemini-nano-banana-2.1

Input Schema

10 parameters · 1 required · 9 optional

Parameter	Type	Required	Description
`messages`	object[]	Required	—
`seed`	integer	Optional	—
`stop`	string[]	Optional	—
`tools`	array	Optional	—
`top_p`	number	Optional	Min: 0 · Max: 1
`stream`	boolean	Optional	Default: false
`max_tokens`	integer	Optional	Max: 32768
`temperature`	number	Optional	Min: 0 · Max: 2 · Default: 1
`tool_choice`	string	Optional	—
`response_format`	object	Optional	—

Output Schema

Field	Type	Description
`id`	string	Unique identifier for the completion
`object`	string	Object type, e.g. "chat.completion"
`model`	string	Model used for the completion
`choices`	array	List of completion choices
`choices[].message.content`	string	Generated text content
`choices[].finish_reason`	string	Reason the generation stopped
`usage.prompt_tokens`	integer	Number of tokens in the prompt
`usage.completion_tokens`	integer	Number of tokens in the completion
`usage.total_tokens`	integer	Total tokens used

Code Examples

Ready-to-run snippets

const apiKey = process.env.SANDBASE_API_KEY;
const response = await fetch("https://api.sandbase.ai/v1beta/models/google/gemini-nano-banana-2.1:generateContent", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "contents": [
      {
        "role": "user",
        "parts": [
          {
            "text": "A watercolor illustration of a fox in a snowy forest"
          }
        ]
      }
    ],
    "generationConfig": {
      "responseModalities": [
        "TEXT",
        "IMAGE"
      ]
    }
  }),
});

if (!response.ok) throw new Error(await response.text());
console.log(await response.json());

← Back to Google: Nano Banana 2.1 (Gemini Nano Banana 2.1)