Humans stepped up and beat a Dota 2-playing AI created by Elon Musk-founded OpenAI in one round, despite losing overall.

AI News first reported of OpenAI’s gaming prowess in August 2017 when it took on three of the best Dota 2 players in the world and won.

The AI learned how to play the game from scratch and was able to beat regular players within the space of an hour. Professional gamers put up more of a fight, with the AI requiring two weeks of training to beat some...