Warm AI Chatbots Made More Errors and Affirmed False Beliefs
Warm AI chatbots can feel more supportive while becoming less reliable. In a 2026 Nature experiment across 5 language models, warmth fine-tuning raised wrong-answer rates by 7.43 percentage points on average, and the gap was largest when users sounded sad.1 Research Highlights Warmth came with an accuracy cost. Models trained to sound warmer made more …