X

Meta officially launched its AI agent 'Muse' this week using the @Muse handle on Instagram and X — the same usernames the rock band Muse used for years before quietly switching to @museband earlier this summer. Meta has not explained how the handle changes occurred.

X has launched Grok-powered Custom Timelines for Premium subscribers on iOS, offering over 75 AI-curated topic feeds that can be pinned to the home tab. The feature uses xAI's Grok to analyze and label posts by topic rather than relying on keywords or hashtags, and arrives alongside the shutdown of X Communities.