Language AI technology works with computerised large language models, which use huge amounts of data such as webpages, books and articles to predict which words and phrases go together. Chatbot ChatGPT’s ability to understand and communicate in Welsh has impressed researchers with some saying the language was “part of the AI revolution”. The online events company uses simultaneous translation software to enable speakers to talk in Welsh or English with translated subtitles. The Welsh government minister with responsibility for the Welsh language, Jeremy Miles, said using AI to develop the Welsh language was “very important”. Why is it hard for ChatGPT to learn welsh ?