'Probably' doesn't mean the same thing to your AI as it does to you

'Probably' doesn't mean the same thing to your AI as it does to you When a human says an event is "probable" or "likely," people generally have a shared, if fuzzy, understanding of what that means. But when an AI chatbot like ChatGPT uses the same word, it's not assessing the odds the way we do, my colleagues and I found. We recently published a study in the journal NPJ Complexity that suggests that, while large language model AIs excel at conversation, they often fail to align with humans when communicating uncertainty . The research focused on words of estimative probability, which include terms like "maybe," "probably" and "almost certain." By comparing how AI models and humans map these words to numerical percentages, we uncovered significant gaps between humans and large language models.