IMAX GT is a cutting-edge cinema projection system, known for offering an incredibly immersive movie experience. "GT" stands for "Grand Theatre" and refers to the largest of IMAX’s projection systems, primarily used for very large screens, sometimes up to six stories tall. The system is built around dual 4K laser projectors, which provide an ultra-high resolution picture, enhanced brightness, deeper contrast, and a wider color gamut compared to traditional IMAX systems. This makes it ideal for 2D and 3D screenings, offering unparalleled visual clarity and realism.

One of the standout features of IMAX GT is its ability to project in the classic 1.43:1 aspect ratio, which fills more of the viewer's field of vision, enhancing the sense of immersion. The sound system is also highly advanced, featuring up to 12 channels, including ceiling-mounted speakers, which deliver a highly detailed and dynamic audio experience.

IMAX GT theaters are usually found in flagship locations, where space and technical requirements can accommodate such large-scale installations. This system is often described as delivering the "gold standard" for movie projection, especially when showing films that have been specifically mastered for IMAX.