google/gemini-3-1-flash-image

Nano Banana 2 (Gemini 3.1 Flash Image)

Name: Nano Banana 2 (Gemini 3.1 Flash Image)
Brand: Google
Availability: InStock

Google's fast, high-quality image generation model.

6/18/2026

131,072 tokens

Input: ¥89.35/M

Output: ¥10,915.3/M

Try in Chat Get API Key

Specifications

Modalities

Input

text

image

Output

image

Supported Parameters

include_reasoning

max_tokens

reasoning

reasoning_effort

response_format

seed

structured_outputs

temperature

top_p

Max Output Tokens

32,768

Code Examples

curl https://api.fastmetal.ai/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "google-nano-banana-2",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Images generated by Nano Banana 2 (Gemini 3.1 Flash Image)

Generated on FastMetal from the prompts below — no retouching, no cherry-picking.

霧の湖と山の夜明け — generated by Nano Banana 2 (Gemini 3.1 Flash Image) on FastMetal — 夜明けの静かな山上湖。水面に霧が立ちこめ、雪をかぶった峰が鏡のように映り込む写実的な風景写真

和紙テクスチャの浮世絵風の鯉 — generated by Nano Banana 2 (Gemini 3.1 Flash Image) on FastMetal — 和紙の質感を活かした浮世絵風の錦鯉。藍と朱の配色、力強い墨線

Try Nano Banana 2 (Gemini 3.1 Flash Image) right now

Nano Banana 2 (Gemini 3.1 Flash Image) is available on FastMetal through one API key. Start in the browser, or call it from the OpenAI SDK.

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