"It had already gotten dirty at an early morning major emergency commercial structure fire that morning - proving its value from the start," the department said.
The Thermite RS3, manufactured by Textron: Howe & Howe Technologies, is a compact robotic firefighting vehicle that features a low center of gravity and wide chassis.
Fire officials said the 3,500-pound robot that resembles a small tank is capable of spraying 2,500 gallons per minute, with a stream that can reach high as 150 feet high or 300 feet across.
The RS3 is remotely operated with a controller that provides high-definition video feedback for "ultimate maneuverability in difficult conditions," according to the LAFD.
LAFD Chief Ralph Terrazas said at a news conference the department first became aware of the technology when watching the Notre Dame cathedral blaze in Paris last year.
"I have no doubt that our resourceful firefighters will find many more uses that I have not even thought about," Terrazas said.
Video released by Los Angeles Mayor Eric Garcetti shows the robot in action.
"This equipment will help us fight fires, and keep Angelenos and our firefighters safe," Garcetti said.
The RS3 cost $278,000 and was purchased and donated to the department by the LAFD Foundation, FOX11 reported.
The RS3 will be housed at Fire Station 3 in Downtown Los Angeles and will be deployed to incidents on a dedicated trailer towed by a pickup truck.
The robot is able to run for 20 hours without refueling and features a front plow blade to push debris, including vehicles.
"New challenges continue to emerge in the fire service and the LAFD is committed to leveraging technology to enhance firefighting operations while reducing risk to firefighters," the department said.
"While the RS3 is not the answer to all types of firefighting, it will assist with safe interior fire operations on large commercial fires, wood-framed structures under construction, structural defense at wildfires, large animal rescues, fuel tanker fires, auto storage fires and much more," the department added.