Llama 2: why is Meta releasing open-source AI model?

Mark Zuckerberg's Meta has this week released an open-source version of an artificial intelligence model, Llama 2, for public use. The large language model (LLM), which can be used to create a ChatGPT-like chatbot, is available to startups, established businesses and lone operators. But why is Meta doing this and what are the potential risks involved? LLMs underpin AI tools such as chatbots. They are trained on vast datasets that enable them to mimic human language and even computer coding.