Experiment: Claude commits to answers more firmly than ChatGPT on 29 of 34 science questions

AymericRoucher · x · 2026-11-08

The author probes a common impression: why do Claude's answers feel more informative than ChatGPT's when both models are about equally smart? Hypothesis: ChatGPT optimizes for being unattackable, Claude for being informative — GPT writes for a hostile critic hunting for contestable claims, Claude writes for a user who wants to know what's true.

Typical difference: Claude writes "no effect", GPT writes "no very robust demonstrated effect" — double hedging that only refutes the extreme case without taking a position, at the cost of less information for the user.

The attached chart quantifies this: two blind AI judges measured the conviction conveyed by each model's answers across 34 contested science questions (log-odds scale). Claude Opus 5.5 sided more firmly with scientific consensus on 29 of 34 questions, while GPT-6.1 Sol hedged noticeably more on topics like vaccines-autism and 5G dangers.

Original post →

More from Models

Models channel →