80s Neon City Portrait
ChatGPT · GPT-5 Image · 14 Sept 2026 · 5 views
Prompt
// This prompt was run on the model shown above. // The output you see is what it produced. // // 1. Press Show to load the full prompt // 2. Press Copy to put it on your clipboard // 3. Paste it into the model and generate // // Read the testing notes below before you run it. // They cover what breaks and what to change.
Notes from testing
Writing the exact pixel size (1080x1350) alongside 4:5 is what makes the ratio hold. Asking for 4:5 alone gets ignored and you get a square. Keep the lighting colours to two - adding a third neon colour muddies the face. If the face comes out too smooth, add 35mm film grain again at the end of the prompt.
Questions
Which model was this tested on?
GPT-5 Image inside ChatGPT, tested in September 2026. It also works on Nano Banana, though the neon reflections come out softer there.
Does this work on the free plan?
Yes. Image generation is available on the free ChatGPT plan with a daily limit, so the prompt runs without a paid subscription.
Why 1080x1350 pixels?
That is the exact 4:5 size Instagram uses for portrait posts. It takes up the most feed space and needs no cropping after download.