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SpaceXAI (formerly xAI)

AI & Machine Learning · Palo Alto, California · Subsidiary

SpaceXAI (formerly xAI) was a standalone private AI company before becoming a wholly owned subsidiary of publicly traded SpaceX.

$230B+Last funding-round valuationSeries E, January 2026; $20B raised
~$250BSpaceX acquisition valuationReuters-reported, February 2026
$33BX acquisitionAll-stock, March 2025
Public parentCurrent statusNow part of public SpaceX

The Company

Founded by Elon Musk in 2023, SpaceXAI develops the Grok model family, with distribution through X and its own applications.

SpaceX acquired xAI on February 2, 2026, making it a wholly owned subsidiary. In July 2026, the brand rebranded as SpaceXAI. SpaceX completed its IPO on Nasdaq (SPCX) in June 2026, so SpaceXAI should no longer be treated as a standalone private company.

Why It Matters

SpaceXAI remains relevant to AI competition, but its economics and ownership now sit inside SpaceX. This profile preserves the private-company record; SpaceXAI is no longer a standalone private-company valuation comparable to the active private businesses in this directory.

Valuation History

  1. $24.0B→May 2024$6B Series BSource ↗
  2. $80.0B→Mar 2025$33B all-stock acquisition of X (xAI valued at $80B)Source ↗
  3. $230.0B→Jan 2026$20B Series ESource ↗
  4. $250.0B→Feb 2026SpaceX all-stock acquisition (Reuters-reported)Source ↗

What Changed

  1. Acquired X for $33B of equity value in an all-stock transaction, combining the model business and social platform.

  2. Raised a $20B Series E before the SpaceX transaction.

  3. SpaceX acquired xAI, making it a wholly owned subsidiary.

  4. SpaceX completed its IPO on Nasdaq (SPCX); SpaceXAI is now part of a public-company group.

  5. xAI rebranded as SpaceXAI.

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