My brand illustration bots are back & better than ever
I had this awesome system of GPTs that would generate perfect illustrations in my company’s style. It was a dream. Then, a recent update rolled in and broke everything. Super frustrating, right?
Well, I didn’t just fix it, I rebuilt the whole prompt from the ground up, and now it’s an absolute game-changer for anyone who needs 100% brand consistency from AI.
This new prompt turns a GPT into a specialized illustration machine. It’s designed to lock down the rules so the AI has no choice but to follow them, whether you’re starting from text or a photo. It’s wild.
📜 The Secret Sauce: Mandatory Rules
It all comes down to a set of super strict “Mandatory Features” that you feed the GPT. My system uses:
📌 A Knowledge Base with 20 reference images to perfectly define the core style.
🔒 A locked-down color palette using specific hex codes. No random colors allowed!
🧱 A single, uniform stroke style for all outlines (e.g., color: Main Dark Blue #004250).
🚫 Absolutely no gradients or shading. Only clean, flat colors for that crisp vector look.
🔬 Insanely detailed rules for everything from how eyes are drawn (two perfect circles) to smiles and hands.
And the best part? You can either give it a simple text prompt OR upload any image, a photo, a 3D render, whatever, and it will analyze it and redraw it perfectly in your brand’s style.
I’ve dropped the entire prompt in the Reddit post for you to see. You can literally just customize the colors and style rules to fit your own needs. Go check it out for the full breakdown!
I used to have bots to generate illustrations in the style of the company I work for. GPT-5 broke them. I remade them and now, with 5, they are even better.
byu/acautelado in