As an owner of both a RWD i4 (2 years) and an AWD Air Pure (approaching 1 year), rest assured there are pros & cons to both. I strongly suggest you test drive both in a variety of driving scenarios, if possible.
There’s no question the current state of the i4’s software is more bulletproof, but the Lucid’s software has improved significantly over time. If interior space is of prime importance, the Lucid wins easily. IMO both have plenty of power for the overwhelming majority of drivers. Admittedly I’m not speed crazed like some here and a 4 second 0-60 with excellent passing power meets my requirements. I find the smaller & lighter i4 to have the edge in handling, but certainly the Air is no slouch, particularly when the additional 500-600lbs of weight & size are factored in.
I’d have to say the build quality, although very good on my Pure, is still better on my i4, which is impeccable.
Aesthetics? I won’t even go there, that’s simply too subjective an issue. Both are fantastic vehicles worthy of anyone’s attention. You can’t go wrong with either.