OpenAI releases the full 1.5-billion-parameter GPT-2

OpenAI published the full 1.5-billion-parameter GPT-2 model and its code on 5 November 2019, completing the staged rollout begun in February. The company said it had found no strong evidence of misuse of the smaller versions released earlier.

Why it mattered It closed the year’s test case for staging a model’s release, and the outcome was cited on both sides of later arguments about publishing large models.