In the previous post , I showed you two models answering the same question. One hallucinated confidently. The other knew when to stop. And a bunch of you asked: okay, but which one should I actually use? Haiku, Sonnet, Opus. Micro, Lite, Pro. Mini, Small, Large. There are dozens of models and they all sound like perfume brands. How are you supposed to pick one? That's this post. I'm going to take one prompt, run it through two models (one small, one large), and show you what's different. Then I'll give you a simple framework for choosing the right one. The demo: same prompt, two models I went back to the recipe from the first post . Same recipe. Same question. Two different model sizes. The prompt: "I'm cooking this for six people on Saturday. One is vegan, one is gluten-free. Adapt the recipe for me, give me a shopping list, and a timeline starting from 4pm." The small model Quickly, it gave me a shopping list, a timeline, and basic adaptations. Nothing fancy, but everything I asked for.…