Alphabet has emerged among tech firms as the global leader in AI/ML, autonomous vehicles, and quantum computing. Waymo, Alphabet's self-driving car subsidiary, is considered to be the leader in autonomous vehicle technology and was the first self-driving company to offer a publicly available robo-taxi service in 2021.[61] With its Sycamore processor, Google is seen as the leader in quantum computing and in 2019, it claimed Sycamore had achieved quantum supremacy.[62]