OpenAI’s retired-but-not-forgotten o3 model, a digital chess prodigy slated for obsolescence by the arrival of GPT-5, delivered a stunning checkmate to Elon Musk’s Grok 4. The Thursday showdown at Google’s Kaggle Game Arena AI Chess Exhibition wasn’t even close: a decisive, four-game sweep that left the competition speechless and crowned o3 the undisputed champion in its swan song performance. Forget …
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