LLMs believe false statements even after explicit warnings that they're false

Fine-tuning tests show "bias ... toward confidently representing the claims as true." https://arstechnica.com/ai/2026/05/llms-believe-false-statements-even-after-explicit-warnings-that-theyre-false/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social