Open to ideas: Meta's AI lab has created a massive new language model, and in an unprecedented move for Big Tech, it is giving it away to researchers--together with details about how it was built. Large language models--powerful programs that can generate paragraphs of text and mimic human conversation--have become one of the hottest trends in AI in the last couple of years. But they have deep flaws, parroting misinformation, prejudice, and toxic language. Wider scrutiny: Meta's decision represents the first time that a fully trained large language model will be made available to any researcher who wants to study it. In theory, putting more people to work on the problem should help.