It is insane how secretive OpenAI are being in general. Meta just open sourced their planning AI, how hard is it to talk about work in progress on planning and LLMs combined with each other? Especially when that's the purpose of your non profit.
Supposedly Q* combines LLM with A* search, which I think could be "easily" reproducible by other tech giants, even if they have just a vague idea of what OpenAI is researching.