Yup exactly!! its a subtle change happening under the hood, When people have a good interaction with ChatGPT they attribute it to the LLM, but in most cases, its the agentic features in ChatGPT that wows you and not necessarily the smartness of the large language model.
But the offerings of ChatGPT or Google's AI Studio surpass the feature set of LibreChat by a lot. It used to be just a "better" system prompt, but now it's a lot more.