Is Q just an application on top of an existing LLM or is it something like a Titan replacement? It sounds like it's the former but it's strange that Claude isn'

Is Q just an application on top of an existing LLM or is it something like a Titan replacement? It sounds like it's the former but it's strange that Claude isn't even mentioned here. Or maybe it isn't strange at all after the shitstorm surrounding Claude 2.1?