Meta, the parent company of Facebook, took up the fight for open-source AI in a big way by releasing a new collection of large AI models. These include a model named Llama 3.1 405B, which Meta’s founder and chief executive, Mark Zuckerberg, says is “the first frontier-level open source AI model”. In the case of ChatGPT, its parent company, OpenAI, releases neither the dataset nor code of its latest AI tools to the public.