The new Voyager Program sent AI-controlled probes into deep space on decades-long trips to star systems within twenty lightyears of our own.  The nano probes traveled at 20% the speed of light in a swarm of thousands in search of habitable worlds that no long-range telescope could confirm.  The first swarm reached Proxima Centauri in 2086 and the rest of the Alpha Centauri system in 2087.  They beamed their findings back to Earth and continued to explore the area until humanity arrived two decades later.  Yes.  AIs were the first explorers of Alpha Centauri.