The world’s top performing artificial intelligence models, including OpenAI’s o3 and 04-mini, Google LLC’s Gemini 2.5 Pro and Gemini 2.5 Flash, Anthropic’s Claude Opus 4, and xAI Corp.’s Grok 4 are ...

Shortly after Hunter Lightman joined OpenAI as a researcher in 2022, he watched his colleagues launch ChatGPT, one of the fastest-growing products ever. Meanwhile, Lightman quietly worked on a team ...