Is there any difference from the standard claude 4 sonnet or the claude 4 sonnet model with a little brain icon?

I am using the standard version since forever, but today i have realized that there is another version on the select models tab with a little brain icon next to it. It appears that the standard version already has reasoning. Is there any difference?

Its thinking models

yes, i know. but that seems to have changed on the latest update. the default was already reasoning, now i had to pick the reasoning from the list of models.

@matgenehr default is not reasoning anymore. Sonnet 4 is good without reasoning and does not improve a lot with reasoning.

You can enable the reasoning version if you prefer.

ok, thanks for the clarification

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