Sources: a16z, Sequoia Capital, and Tribe Capital commit to joining xAI’s new funding round, in which the company seeks to raise ~$6B at an $18B valuation (Financial Times)

Financial Times:
Sources: a16z, Sequoia Capital, and Tribe Capital commit to joining xAI's new funding round, in which the company seeks to raise ~$6B at an $18B valuation  —  Billionaire's artificial intelligence start-up closes in on $6bn funding round as it seeks more financial firepower