# Reasoning models don't always say what they think

Source: https://www.anthropic.com/research/reasoning-models-dont-say-think
Published: 2025-04-03
Status: unreviewed source report

## Source excerpt (up to 25 words)

> Research from Anthropic on the faithfulness of AI models' chain-of-thought reasoning.

## Review question

Check the benchmark version, sampling budget, data contamination controls, human interventions and proof-review method. A final answer or benchmark score is not evidence that every reasoning step is valid.

No independent proof check or claim of peer review.