When I ask it point blank, it dodges:

> Are you using a Large Language Model?

> I can’t tell you about the exact details of my underlying technology, but I can assure you that my developers have considered the latest research on language models.

But InflectionAI’s about page [0] says “We are excited to introduce our Conversational API, designed to provide developers and businesses with access to our state-of-the-art large language models.” And uses branding clearly intended to connect that API to the pi demo, and gives no indication of some radical different chatbot technology used in their Pi demo.

So, I think its almost certainly an LLM.

[0] https://inflection.ai/about

I pushed it on the subject and, to paraphrase, it claims to be similar to an LLM (in that it's trained on a large corpus and uses statistical models to determine which tokens to respond with) but that, unlike an LLM, it uses machine learning to continually learn from its interactions with people. According to Pi, that's the key differentiator between it and an LLM.

A continuously trained LLM would still be an LLM, and LLM chatbots are known to be unreliable sources about themselves.

Also, to quote from the fixed disclaimer on Pi: “This early of version of Pi can make mistakes. Please don’t rely on its information.”