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All-in-one image generation with Gemini models. Supports Nano Banana (3.1 Flash), Nano Banana Pro (3 Pro), and Nano Banana 2 (2.5 Flash).
3 of 23 test cases passed with the skill.
Tokens, turns and time describe resource use, not a dollar price.
Lift withheld: 3 comparable cases; this report requires 8.
The instructions your model reads when the skill loads.
All-in-one image generation and editing using the full Nano Banana model family. Pick the right model for the job.
which node. If missing, tell the user to install Node.js (e.g. via brew install node or https://nodejs.org).| Flag | Model | Best for |
|---|---|---|
--model nano-banana | Gemini 3.1 Flash Image | Default. Fast, balanced quality and cost. |
--model nano-banana-pro | Gemini 3 Pro Image | Highest quality, up to 4K, slower. |
--model nano-banana-2 | Gemini 2.5 Flash Image | Speed-optimized, high-volume batch tasks. |
node {baseDir}/scripts/generate-image.js --prompt "a cat sitting on mars" --filename "cat-on-mars.png"
node {baseDir}/scripts/generate-image.js --prompt "oil painting of a sunset" --filename "sunset.png" --model nano-banana-pro --resolution 4K
node {baseDir}/scripts/generate-image.js \
--prompt "make the sky purple" \
--filename "edited.png" \
-i "/path/to/input.png" \
--model nano-banana-pro
test cases passed with the skill
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