I Put My Favorite AI Image Model on Trial | ChatGPT vs Nano Banana

I have a favorite AI image model, and I've quietly defended it for over a year. So I finally put it up against Gemini's Nano Banana on the actual work I do every week — and somewhere in the middle of testing, I realized I'd been wrong about something. I use ChatGPT and Nano Banana almost every week — thumbnails, logos, photo edits, the silly stuff I send to friends. But I'd never actually tested my assumption that ChatGPT is the better image model. So I ran the same prompts through both, side by side, on real tasks instead of generic "cat in a spacesuit" prompts. I had Claude write them so the wording was identical for each model — no thumb on the scale. The head-to-head tests: 🧩 Turning a word into stylized art — "Codex" as a jigsaw puzzle 🔥 Dropping a logo into a scene — the Claude Code campfire 💎 Another logo scene — the Gemini crystal cave ☕ A fun photo edit — a plain mug turned into a glowing magic potion 🖼️ A modern twist on a classic — American Gothic, with a smartphone 🎤 Editing a real photo of a person — putting me on a TED-style stage By the end I had a clear (and honestly humbling) answer about my favorite — plus a change to the way I'll prompt image models from here on out. 🛠️ Tools used: ChatGPT (the image generation built into ChatGPT), Google Gemini's "Nano Banana" image model, and Claude (to write the identical test prompts). If you've been getting weird or inconsistent results from AI image generators, this one's for you. It's especially useful if you're a creator, marketer, or hobbyist who uses AI images for thumbnails, logos, social posts — or just for fun — and you've ever wondered why the same kind of prompt gives you something great one day and "AI slop" the next. Whether you're brand new to AI image tools or you already use ChatGPT and Gemini every week, you'll get a practical, side-by-side look at how these two models actually behave differently, and what that means for the prompts you write. Chapters 0:00 Intro 1:07 Stylized Text 2:32 Logos 6:04 Modify A Photo 7:46 Play With the Classics 9:36 Photos of Me 12:29 Wrap-Up 13:17 The Takeaway 14:37 Get Better Results #ChatGPT #NanoBanana #AIimages #PromptEngineering #Gemini Subscribe for more AI reviews, comparisons and walkthroughs!