Earlier quoted context omitted.
This point is understated. So many people are going around like "I'm building an AI app!" when the reality is, OpenAI built an AI app, you're just designing a front end for it.
OpenAI builds an LLM and an api-interface to that model. The design of abstractions, prompt engineering, custom fine-tunes and software engineering required to ship a valuable application on top of that interface counts as "building an app" in my book.
Replace social media / graph APIs with the ones from OpenAI