Yes X was merged into xAI last year I believe.

Elon Musk’s AI startup, xAI (x.ai = grok), officially acquired X Corp. (the parent company of the social media platform X or x.com, formerly Twitter/x.com) in an all-stock deal. Both now operate under a unified holding entity, frequently referred to in corporate filings as X.AI Holdings Corp. (or simply xAI). Now SpaceX has moved to acquire or merge with xAI. This effectively brings the social media data from x.com, the AI development of x.ai, and the satellite infrastructure of Starlink/SpaceX under one "super-conglomerate" roof.