# AI models' written reasoning steps correspond to distinct internal patterns, a new study finds

> Source: <https://the-decoder.com/ai-models-written-reasoning-steps-correspond-to-distinct-internal-patterns-a-new-study-finds/>
> Published: 2026-09-12 13:39:43+00:00

Reasoning steps like calculation, formula retrieval, and deduction are clearly separable in a model's internal states, especially in the middle layers. That matters for AI safety, because models process more than their visible chain of thought reveals.

The article [AI models' written reasoning steps correspond to distinct internal patterns, a new study finds](https://the-decoder.com/ai-models-written-reasoning-steps-correspond-to-distinct-internal-patterns-a-new-study-finds/) appeared first on [The Decoder](https://the-decoder.com).