The Medtronic 670g is the only pump that currently will automatically correct highs, but it only works with the Medtronic CGM which is untrustworthy.

The Tandem t slim x2 only has support for hypo prevention today, but it supports at home firmware/software updates and they are pretty far along with the FDA on getting approvals for their auto dosing for highs. They anticipate a release this summer.

I wish that OmniPod was further along on this front. I would love to have a tubeless solution and the convenience of not needing to disconnect every time I'm going to get in the water, but the trade-off just isn't worth it IMHO.