SpaceX's $1.25 Trillion Acquisition of xAI Becomes the Largest Deal in History

SpaceX's acquisition of xAI, valuing the artificial intelligence company at approximately $1.25 trillion, has been recorded as the largest merger and acquisition transaction in history, according to deal trackers that reviewed first-quarter 2026 activity. The combination brings xAI's large language model business under the same corporate umbrella as Musk's rocket and satellite ventures.

The deal anchored a broader surge in dealmaking during the first quarter, with global M&A activity spanning energy, finance, technology, healthcare, and infrastructure surpassing $1.3 trillion in total transaction value, among the strongest opening quarters for mergers in recent memory.

Analysts have noted the unusual structure of combining a capital-intensive aerospace company with an AI research lab, with SpaceX executives framing the deal as a bet that advanced AI models will become increasingly central to autonomous spacecraft systems, satellite constellation management, and long-term space exploration planning.

Regulators have so far signaled limited appetite to intervene, given that the two companies operate in largely non-overlapping markets, though the sheer scale of the transaction has drawn scrutiny from lawmakers concerned about consolidation of both AI and space infrastructure under a small number of firms.