How do they work then?

Because I thought chain of thought made for reasoning. And the first google result for 'chain of thought versus reasoning models' says it does: https://medium.com/@mayadakhatib/the-era-of-reasoning-models...

Give me a better source.

Did you even read the article you posted? It supports my statement.

CoT produces the linguistic scaffolding for reasoning, but doesn't actually provide much accuracy in doing so.

e.g. https://developer.nvidia.com/blog/maximize-robotics-performa...