GPT-2 is a language model developed by OpenAI that can generate human-like text. Released in 2019, it is the second version of the Generative Pre-trained Transformer series. GPT-2 is trained on a diverse range of internet text, allowing it to understand and produce coherent sentences on various topics. The model has 1.5 billion parameters, making it capable of completing prompts, answering questions, and even writing essays. While it demonstrates impressive language abilities, OpenAI initially withheld its full release due to concerns about potential misuse, highlighting the importance of responsible AI deployment.