Nano Banana OpenRouter

Generate or edit images via OpenRouter using Gemini 3 Pro Image model.

Usage

Generate

uv run {baseDir}/scripts/generate_image.py --prompt "your image description" --filename "output.png"

Edit

uv run {baseDir}/scripts/generate_image.py --prompt "edit instructions" --filename "output.png" --input-image "/path/in.png"

API Key