ChatGPT made it possible for anyone to play with powerful artificial intelligence, but the inner workings of the world-famous chatbot remain a closely guarded secret. In recent months, however, efforts to make AI more “open” seem to have gained momentum. In May, someone leaked a model from Meta, called Llama, …

When Meta released Llama 2, a powerful artificial intelligence model similar to the one behind ChatGPT, last month, it made it possible for developers, startups, and researchers to play with the kind of AI that has enthralled the world for nearly a year. Today, Meta is following up with the …