Sentience meaning it has a subjective experience. There is something its like to be GPT4. Resolves to 2035 general consensus

Context:

https://www.youtube.com/watch?v=-ImdlZtOU80

https://www.youtube.com/watch?v=Q-p747h4HKw

https://www.youtube.com/watch?v=pGgM3c1e8vQ

It is very clear to me that animals are sentient and have a rich internal life. However, these animals are very dumb. I think they are quite a lot dumber than GPT4. Or, it depends on your perspective, but I think you can make a very reasonable case that GPT4 is as smart or smarter than most non-human mammals are. However, it is very unintuitive to me that GPT4 is sentient, knowing anything about how transformers actually work. But, I am not sure if this perspective is justified. The only argument I can come up with is that subjective experience is a result of embodied reasoning in a world, though this argument seems tenuous at best.

Please come with arguments and perspectives in comments!