2015–2020 December 11, 2015 Introducing OpenAI April 27, 2016 OpenAI Gym Beta December 5, 2016 Universe July 20, 2017 Proximal Policy Optimization August 11, 2017 Dota 2 February 20, 2018 Preparing for Malicious Uses of AI April 9, 2018 OpenAI Charter July 30, 2018 Learning Dexterity February 14, 2019 Better Language Models and Their Implications March 11, 2019 OpenAI LP April 15, 2019 OpenAI Five Defeats Dota 2 World Champions April 25, 2019 MuseNet July 22, 2019 Microsoft Invests In and Partners with OpenAI to Support Us Building Beneficial AGI August 20, 2019 GPT-2: 6-Month Follow-Up September 17, 2019 Emergent Tool Use from Multi-Agent Interaction October 15, 2019 Solving Rubik’s Cube with a Robot Hand November 5, 2019 GPT-2: 1.5B Release April 30, 2020 Jukebox June 11, 2020 OpenAI API