At OpenAI, we’ve used the multiplayer video game Dota 2 as a research platform for general-purpose AI systems. Our Dota 2 AI, called OpenAI Five, learned by playing over 10,000 years of games against itself. It demonstrated the ability to achieve expert-level performance, learn human–AI cooperation, and operate at internet scale.
November 9, 2016
First commit of OpenAI's Dota 2 project.
March 9, 2017
August 11, 2017
1v1 Shadow Fiend bot beats top professional Dota 2 players at The International 7.
September 7, 2017
February 28, 2018
First 5v5 results: RL agent beats OpenAI scripted bot at tower minigame.
April 3, 2018
RL agent beats in-house OpenAI team at net worth minigame.
June 6, 2018
RL agent defeats in-house OpenAI team at fairly restricted 5v5.
June 30, 2018
OpenAI Five’s parameters initialized.
August 5, 2018
OpenAI Five defeats popular casters at the Benchmark in front of a live audience and 100k livestream viewers, with somewhat restricted 5v5.
August 9, 2018
August 17, 2018
August 22–24, 2018
August 26, 2018
More model capacity: OpenAI Five’s long short-term memory (LSTM) size is doubled and number of parameters quadrupled.
October 5, 2018
December 10, 2018
January 16, 2019
February 1, 2019
April 5, 2019
April 13, 2019
OpenAI Five wins back-to-back games versus Dota 2 world champions OG at Finals, becoming the first AI to beat the world champions in an esports game.
April 18–21, 2019
July 12, 2019
Finished training of a new agent, Rerun, which reached a 98+% win rate against the agent that played at Finals. This was completed in 2 months, without surgery, and while utilizing only 20% of the resources.