Doubts related to GenAI Prompt Node

I just want to know, is it possible to use custom fine-tuned model in GenAI Prompt node instead of using predefined models like ChatGPT 3.5 turbo, ChatGPT 4, ChatGPT4o

Yes, once a custom LLM integration has been created, it can be used in the GenAI Node. Here how it looks in my XO10 system.