Reinforcement learning is a way for an agent to learn behavior through rewards or penalties as it interacts with an environment. At OpenAI, it became an early research priority: the lab built OpenAI Gym to accelerate research and pursued AI-driven gameplay, including Dota 2. section 1.1
These efforts preceded a shift toward focused Transformer experiments and the 2018 release of GPT-1. The sequence shows reinforcement learning as one part of OpenAI’s early, broad exploration, not as an explanation of how its language models were trained. section 1.1

















