I spent some time digging through the latest xAI documentation, and the release...

https://mighty-wiki.win/index.php/What_is_Grok_Expert_Mode_and_What_Does_It_Change%3F_A_Deep_Dive_for_Developers

I spent some time digging through the latest xAI documentation, and the release of Grok 4.20 Reasoning changes the math for heavy-duty inference tasks. It is rare to see a model with this level of transparency priced at just $1