# Reasoning models struggle to control their chains of thought, and that’s good

Source: https://openai.com/index/reasoning-models-chain-of-thought-controllability
Published: 2026-03-05
Status: unreviewed source report

## Source excerpt (up to 25 words)

> OpenAI introduces CoT-Control and finds reasoning models struggle to control their chains of thought, reinforcing monitorability as an AI safety safeguard.

## 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.