“The American people do not want woke Marxist lunacy in the AI models,” proclaimed President Donald Trump in July just before signing a series of executive orders, including one apparently aimed at stopping artificial intelligence (AI) models from brainwashing users with left-wing propaganda. Those concerns may seem contrived. Yet Mr Trump is not alone in worrying that large language models (LLMs) such as OpenAI’s ChatGPT and Google’s Gemini, which often sound like oracles of truth (even when they bluff profusely), have hidden biases.