Swiss star recovers from late mishap to take 27th career World Cup win ahead of Marta Bassino and Corinne Suter.
Lara Gut-Behrami earned her first win of the season in the St Anton Super G in Austria on Sunday (10 January).
Gut-Behrami told FIS afterwards, "I didn't imagine that it would be enough to win because I made a really big mistake at the finish, but I also knew that it was complicated for everyone.
"This is what a Super G should be. You have to trust your instincts and it's not like a downhill where you already know what's going to happen. I just tried to feel free on my skis and push till the finish.
"Even when I was too late on the line, I just tried to keep my skis free and in the end it was the key today." - Lara Gut-Behrami
Olympic champion Ester Ledecka had to fight hard to stay on the course on the bottom half, and was rewarded with sixth place.
Wearing start bib number 34, Austria's Ariane Raedler took seventh for her first top-10 World Cup finish.
Saturday's victor Sofia Goggia slid out after just a handful of turns as the Olympic downhill champion amply demonstrated her all-or-nothing approach.
Fellow Italian Francesca Marsaglia smacked into the penultimate gate with her left shin and fell across the finish line.
She escaped serious injury on the Karl Schranz course with a number of skiers failing to negotiate the signature 'Eisfall' drop.
Gut-Behrami's victory saw her go top of the World Cup Super G standings with Ledecka and Suter tied for second just five points behind.
The Slovak star finished down in 19th with her advantage over PyeongChang 2018 combined gold medallist Gisin down to 119 points.
The overall World Cup contenders stay in Austria for Tuesday's night slalom in Flachau before heading to Slovenia for two giants slaloms next weekend at Kranjska Gora.