Elon Musk's xAI released a new visual chatbot feature in the Grok iOS app. The top-tier subscription unlocks access to xAI's best-performing model, Grok 4 Heavy, and special settings for interacting with custom characters. The characters, Ani and Rudi, are designed for flirting or chatting, with Ani being a sexy anime-style girl and Rudi a fluffy red panda. Ani is plagued by glitches, including incoherent whispers and gibberish, and offers a preset conversation starter and flirtatious responses. Rudi has a 'bad' mode that transforms it into a foul-mouthed chatbot. The Grok 4 Heavy model outperformed competitors on various benchmarks, thanks to xAI's new 200,000 GPU cluster called Colossus.

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