How far is a peer-to-peer trained, open source alternative to ChatGPT?

How far are we from having available a peer-to-peer, community trained, open source alternative to ChatGPT, that, would allow individuals to run, control and access their own personal AI bot?

[links are merely illustrative]

https://techcrunch.com/2022/12/30/theres-now-an-open-source-...

https://www.makeuseof.com/best-alternatives-chatgpt/

At a moderate distance, assuming LAION OpenAssistant and/or Carper.ai deliver.