Elon Musk praised his Grok app after it ranked above Google's Gemini in Apple's App Store productivity charts, saying, "Not bad for now." Musk recently accused Apple of favoring ChatGPT, which still holds the top spot. Grok, part of xAI, has 35M MAUs and seeks fresh funding at a $200 billion valuation, versus OpenAI's $12 billion revenue run-rate.