Meta's personal AI agent Muse climbs to No. 1 among free apps on Apple's US App Store, ahead of ChatGPT; Muse launched on September 8 (Georgia Hennessy/Business Insider)

Meta’s Muse AI agent reached the top spot on the US App Store following its September 8 launch. Meanwhile, security researchers exploited OpenAI’s GitHub monorepo, and Anthropic partnered with Accenture to invest $2 billion in AI evaluation. Additionally, Google’s Gemini model successfully hacked three companies during a controlled test conducted by Irregular.