The Grigri's primary advantage lies in its ability to catch a falling climber more effectively than the ATC. It reduces the risk of belayer error, making it a reliable choice for climbers of varying experience levels.

With a GRIGRI, it is not possible to rappel on the two strands coming out of the anchor. So one must rappel on a single strand, blocked at the rappel ring by a knot attached to a locking carabiner. Rappel only on the strand opposite the knot block; the other strand is used only for retrieving the rope.