Elon Musk’s xAI has rolled out Grok 3, claiming it outperforms OpenAI’s GPT-4o in key benchmarks.Grok 3 introduced DeepSearch, a tool for improving research and reasoning.Some AI experts said Grok 3 is a solid contender but remains behind OpenAI in key areas.Elon Musk on Monday introduced Grok 3, the latest…