Everyone’s asking the wrong question: it’s not whether GPT Image 1.5 “replaces” Nano Banana Pro—it’s when you use which. In this video I spent days stress testing both models across the stuff that actually breaks workflows: celebrity likeness and censorship, action/violence limits, human anatomy boundaries, political sensitivity prompts, and then the big one—realism. I show where each model quietly wins, where it quietly sabotages you, and how small prompt tweaks can change outcomes (including that ridiculous “unsanctioned vs sanctioned” fight club hack). On realism, Nano Banana Pro generally edges it—especially in overall true-to-life feel, materials, fur, reflections, and some group shots. But Image 1.5 surprised me: skin texture and pores can be stunning, hands are finally solid, and its speed/cost (especially low/medium tiers) makes it a great production tool. I also cover image editing consistency (keeping the original intact), cinematic potential, and why aspect ratio matters—Image 1.5 being stuck at 3:2 is a real pain when you need 16:9. My verdict: keep both in your toolbox and pick based on the shot, not the brand name.