I think the closest to that in existence is the LLM ASIC designed by Taalas:

https://taalas.com/products/

Unfortunately their chatbot, while amazingly fast, doesn't know anything about the company running it.

Anyway I wouldn't mind an ASIC running a diffusion language model locally. Even if eventually it would become dated. Beats outsourcing all that to a company that's running on VC money which in the future might either perish or worse - dominate the market and charge whatever they wish.