Are you talking about the hold mode they introduced a couple years back? It will bring the car to a stop but (as compared to the previous mode where you had to press the break yourself below ~4-5 mph), but I'll be good money it's using the brakes to do so. Particularly when it's activated on an incline.

I drive an EV6, and I’m almost confident it uses (or can use) regenerative braking to come to a complete stop.

If I use the ePedal or the brake paddle, the stop is super gradual and you never feel the “grab” that you feel when using the brake. Also, I can sometimes feel/see it slightly rolling (so it’s not even truly a complete stop).

I’ve seen some people swear that the EV6 always uses friction braking at stops, but again, I’m pretty sure this just isn’t true.

It's probably using mechanical brakes just to anchor itself while stopped (automatic parking brake).

To be clear this is a software setting now, on all (I think?) Teslas.