Tesla doesn't do any blending of the brake pedal. Pressing the brake pedal always applies the friction brakes only.

However, since a software update last year, they have had a one-pedal driving mode (Stopping mode "Hold"). In this mode, the vehicle is able to come to a complete stop without using the brake pedal, using a blend of re-gen and friction brakes to do so.

In practice, it means it uses re-gen down to a very low speed (< 5mph), then applies the friction brakes to achieve a complete stop (this also doubles as a "hill hold" - the brakes won't release until you press the accelerator again).