Gemini 3.1 Flash Image Preview 🍌 (AI Studio)

Google AI Studio preview image generation model optimized for speed and efficiency, ideal for fast interactive responses and high throughput

Category Image Model ID gemini-3.1-flash-image-preview

Try itGoogle AI Studio

PositioningDesigned for speed and efficiency in interactive and high-throughput image generation

AvailabilityStandard / Batch

Pricing & Specs

💰 Pricing

Input$0.25 / M tokens

Output$1.50 / M tokens

Price$60.00 / M image tokens

⚙️ Specs

Try itGoogle AI Studio

PositioningDesigned for speed and efficiency in interactive and high-throughput image generation

AvailabilityStandard / Batch

Input Price (Paid Tier)$0.25 / 1M tokens (text/image)

Output Price (Paid Tier)$1.50 / 1M tokens (text and thinking)

Image Output Price (Paid Tier)$60.00 / 1M tokens (~$0.045 per 0.5K, $0.067 per 1K, $0.101 per 2K, $0.151 per 4K image)

Preview NoticePreview models may change before stabilizing and typically have stricter rate limits

ProviderGoogle AI Studio

API Examples

Python

from google import genai
from google.genai import types
from google.api_core.client_options import ClientOptions

client = genai.Client(
    api_key="your-api-key",
    client_options=ClientOptions(api_endpoint="https://api.xairouter.com")
)

resp = client.models.generate_content(
    model="gemini-3.1-flash-image-preview",
    contents="Generate a 1K banana-themed minimalist poster in bright yellow and white",
    config=types.GenerateContentConfig(
        response_modalities=["IMAGE", "TEXT"],
        image_config=types.ImageConfig(
            aspect_ratio="1:1",
            image_size="1K"
        )
    )
)

for part in resp.parts:
    if image := part.as_image():
        image.save("banana-poster.png")
    elif part.text:
        print(part.text)

cURL

curl -X POST \
  "https://api.xairouter.com/v1beta/models/gemini-3.1-flash-image-preview:generateContent" \
  -H "x-goog-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [{"role": "user", "parts":[{"text":"Generate a 1K banana-themed minimalist poster in bright yellow and white"}]}],
    "generationConfig": {
      "responseModalities": ["IMAGE"],
      "imageConfig": {"aspectRatio": "1:1", "imageSize": "1K"}
    }
  }'

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