The closest things to a technical answer I have seen are
1. "We'll have ChatGPT 9 solve it so that ChatGPT 10 is aligned, and then ChatGPT 10 can stop all the other AIs somehow"
2. "Let's do interpretability research so that we can understand what an AI is thinking and then maybe solve the alignment problem with that information."
In terms of non-technical answers, there is
3. hope scaling stops working before we create an AI formidable enough to pose an existential risk
4. hope alignment somehow happens for free
5. hope we can somehow create an enforceable multilateral treaty to stop research into a very profitable enterprise, despite the enormous economic incentives to defect.
I have the most faith in option 3, but unfortunately there's really nothing that can be done to make it more plausible -- it either happens or it doesn't.