Aspect Ratios & Resolution with ChatGPT Images 2.0

TL;DR: ChatGPT’s new Imagen 2.0 model lets you pick any aspect ratio and doubles the top resolution to 2K, so posters, panoramas, and tiny-text images all come out crisp and ready to use. ## From Fixed Sizes to Any Ratio You Want Older Imagen versions locked you into three shapes: square, portrait, or landscape. Imagen 2.0 removes that limit. You can now request any width-to-height combination, and the model will oblige. ## Resolution Jump: 1K → 2K Maximum output resolution on the API has doubled from 1024 px to 2048 px on the long edge. The extra pixels matter the moment you need legible text or plan to print. ### Poster Example: 3:1 Tall Strip Prompt used: “Make me a 3:1 tall skinny poster about the different layers of the ocean.” The 2K file keeps every label sharp enough for a classroom wall. ### Macro Text Test: Rice Grain Close-Up At the old 1K default, lettering on individual grains is only a colored smudge. At 2K, the same prompt renders each character crisp and readable—an immediate, visible jump in quality. ## Smart Defaults: Let the Model Pick the Shape If you don’t specify an aspect ratio, Imagen 2.0 infers one from the prompt. ### 360° Panorama Demo Prompt used: “Generate a 360° panorama from the summit of Half Dome.” The model recognizes that 360° images are conventionally 2:1 and produces that ratio automatically. Loading the image into a panorama viewer confirms a full 360° field of view. The left and right edges match so cleanly that no seam is visible—OpenAI researcher Dibya Bhattacharjee bets viewers can’t find it in the comments. ## Try It Yourself Combine free-form aspect ratios with the new 2K ceiling to make classroom posters, phone wallpapers, printable panoramas, or anything else that used to require post-crop upscaling. Source: [OpenAI on YouTube](https://www.youtube.com/watch?v=L-RVyipLHQQ)