When I started playing Go, it took me about 4 months to beat the stronger available computer AI. Today, the strongest computers would be a challenge to play against evenly.
However, even after all the patterns and montecarlo solutions, they still fumble the initial stage of the game. As a Go player, I look forward to AI's that beat humans in that stage of the game, because at that point, we will be able to learn from them.
Until then, their victories are purely computational, and they are not even interesting to play with.