OpenAI Five defeats the Dota 2 world champions OG

OpenAI Five, a team of five neural networks trained by reinforcement learning, beat OG, the reigning Dota 2 world champions, 2-0 at a public event in San Francisco on 13 April 2019. OpenAI said the system had played the equivalent of about 45,000 years of the game in ten months.

Why it mattered Reigning world champions of a commercial esport lost to a machine for the first time, in a game requiring five agents to cooperate over matches lasting tens of minutes.