GPT-4 said strawberry has two R's. The word has three.

"How many R's are in 'strawberry'?" By 2024 every developer had seen the screenshot. GPT-4 confidently insisting strawberry has two R's. The word has three. The fix eventually landed — but for a moment it captured something cleaner than any benchmark: a thing a human does in half a second, that the model gets confidently wrong. That's the picture most people have when they hear "hallucination." sonmat v0.8.0 (April 11, 2026) dealt with hallucinations. Just not that kind. What the 7% actually was