Sure, I was not aiming for building the next Deepseek LLM at home, rest assured.
Celestina most likely shares the same LLM as the other AI chatbots from the same platform. Effectively meaning they are trained and fine-tuned on the same data.
The key differencier between her and the other models will be the embeddings she uses to chat with you.
She will look in several places to make sure her answer is most accurate to your last response.