gemini-3-pro-image-preview ブログ - ワンAPIで500以上のAIモデルにアクセス

Nov 21, 2025

Gemini 3 Pro Image( Nano Banana Pro) API

Google’s Nano Banana Pro (official model id gemini-3-pro-image-preview) is the image-generation / image-editing variant of Gemini 3 Pro. It’s a preview-stage, professional-grade image model that adds 2K/4K output, high-fidelity multi-image composition (up to 14 reference images, character consistency for up to 5 people), stronger text-in-image rendering, and search grounding for real-world factuality.