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Model ID 
gemini-3.1-flash-lite-image
Calling method: sync

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Gemini 3.1 Flash-Lite Image (Nano Banana 2 Lite)

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Overview

Gemini 3.1 Flash-Lite Image generates and edits images from text and reference images, optimized for speed and cost. Output is 1K resolution.

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Authentication

Authorization: Bearer YOUR_API_KEY

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Submit a request

curl -X POST "https://console.gmicloud.ai/api/v1/ie/requestqueue/apikey/requests" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3.1-flash-lite-image",
    "payload": {
      "prompt": "A hyperrealistic portrait of a cyberpunk woman under neon lights",
      "image": ["https://example.com/ref1.jpg"],
      "aspect_ratio": "4:5"
    }
  }'

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Request parameters

ParameterTypeRequiredDescription
promptstringYes (single-turn)Text description of the target image. Required unless contents is provided.
imagestring/arrayNoReference image URLs for image-guided generation/editing.
aspect_ratioenumNo1:1 (default), 3:2, 2:3, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9.
image_output_formatenumNopng (default) or jpeg.
contentsarrayNoMulti-turn conversation payload for iterative editing. When provided, prompt/image are ignored.

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Check status

curl "https://console.gmicloud.ai/api/v1/ie/requestqueue/apikey/requests/{request_id}" \
  -H "Authorization: Bearer YOUR_API_KEY"
On success, outcome.media_urls[0].url is the generated image.

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Pricing

  • **Image output: 30per1Mtokens∗∗(1Kimage≈1120tokens≈30 per 1M tokens** (1K image ≈ 1120 tokens ≈ 0.034/image).
  • Input (text, image, video): $0.25 per 1M tokens.
  • Text output (response/reasoning): $1.50 per 1M tokens.

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Notes

  • Output resolution is fixed at 1K (720p-class) in this release.