Well that will never happen except by firing squad. You can only ever be free of perceptual bias (which is ideological bias since its derived in part from your culture and identity), when you lack a sense of self and are unable to interact with your environment... that usually means your dead or pretty close to it.
If the smartest philosophers and scientists in the world, for all time, have been unable to separate their own perceptual biases, what hope is there for anyone to do this for some powerful model and have it retain usefulness.
This is just laughable.