Nano Banana Pro OpenRouter is a Python-based skill designed for generating and editing images using the Gemini 3 Pro Image model from OpenRouter. This tool allows users to create images purely from text prompts, edit existing images by specifying changes, and compose multiple images into a single output. It supports high-resolution outputs of 1K, 2K, or 4K, making it suitable for various visual projects.

The skill operates through a command-line interface, utilizing a simple script to handle image generation tasks. Users can generate an image by providing a descriptive prompt, such as 'A cinematic sunset over snow-capped mountains,' and the output is saved as a specified filename. For editing, users can input an existing image and a prompt that describes the desired modification, like changing the sky in a photo. The ability to compose multiple images into one allows for creative combinations, such as merging different portraits into a single studio shot.

Customization is also a key feature, as users can adjust the system prompt via a provided template file, enabling tailored image generation behavior without needing to delve into the code. This makes the skill accessible for both developers and designers looking for flexibility in their image creation processes. The integration with OpenRouter means that users need to manage API keys, ensuring secure access to the image generation capabilities.

Overall, Nano Banana Pro OpenRouter is an effective tool for anyone in need of advanced image generation and editing capabilities, whether for personal projects, professional design work, or creative experimentation. Its straightforward command structure and high-resolution output options make it a valuable addition to any developer or designer's toolkit.