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.
dragonwriter|2 years ago
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.”