First unveiled on December 9, 2021, General Atomics states that it is to fulfill the roles of reconnaissance, close air support, and armed overwatch.

[2] The initial objective was to create a drone that could perform vertical takeoff and landing (VTOL), but this was determined to be impractical as significant compromises in payload or endurance would need to be taken.

The wings are enlarged, featuring "high-lift devices" including leading edge slats, double-slotted flaps and drooping ailerons.

[13][14][15][16] In May 2023, the United Kingdom announced it would be acquiring a Mojave system for seven months of trials aboard its Queen Elizabeth-class aircraft carriers.

[17] In November 2023, during the WESTLANT 23 deployment to the United States, a single Mojave and its associated control station were embarked aboard HMS Prince of Wales.

[13][14][18][19] On 13 April 2024, General Atomics conducted live fire tests with DAP-6 minigun pods, destroying several ground targets, including a pickup truck, and expending over 10,000 rounds of ammunition.

On 12 November 2024, Gray Eagle STOL UAV, which is the name of the mass-produced version of the Mojave, performed a take-off test on ROKS Dokdo amphibious assault ship of the Republic of Korea Navy.