Nano Banana 2.1 + GPT-6 Astra Made AI Thumbnails 10x Easier

How to Make YouTube Thumbnails With AI Try OpenArt: https://openart.ai/home?utm_source=youtube&utm_medium=influencer&utm_campaign=infl-youtube--na-acq-web&ref=skai11 Hey friends :)) today we’re making AI thumbnails that start with a strong concept. I’ll show you how to brief GPT-6 Astra with your title, photos, and visual references, then use the OpenArt MCP inside ChatGPT to generate thumbnail options with Nano Banana to learn everything about how to make youtube thumbnails. We’ll work through prompt revisions, fix expressions and colours with targeted edits, and keep text short and readable. You’ll see the thumbnail for this video take shape, including a failed attempt and how we improve it, before we check the designs at phone size and prepare three versions for YouTube’s Test and Compare.