A year ago a $100 billion private valuation was remarkable. In 2026 the frontier AI labs blew through $1 trillion, and the deals that got them there reshaped the industry.

The deals, in order

February 2: SpaceX buys xAI. Elon Musk folded his AI company into SpaceX in an all-stock deal that, according to Nevada records seen by CNBC, closed on February 2. Bloomberg valued the combined company at about $1.25 trillion. Musk pitched it as a path to AI data centres in space.

March 31: OpenAI’s $122 billion round. OpenAI announced $122 billion in commitments at an $852 billion post-money valuation, according to TNW. Amazon committed up to $50 billion, Nvidia $30 billion and SoftBank $30 billion, with around $3 billion from retail investors. OpenAI said ChatGPT had more than 900 million weekly users and roughly $2 billion in monthly revenue.

May 28: Anthropic’s Series H. Anthropic raised $65 billion at a $965 billion post-money valuation, briefly above OpenAI’s March mark, TechCrunch reported. Its run-rate revenue was above $47 billion. About $15 billion came from earlier commitments by cloud providers.

June 12: The largest IPO ever. SpaceX listed under the ticker SPCX at $135 a share, raising $75 billion and then $85.7 billion once underwriters exercised their over-allotment option. It was worth about $2.1 trillion at the close of its first day, according to CNBC.

November 6: The first sign of limits. Bloomberg reported that OpenAI had made a first close of about $11 billion at a $1.25 trillion valuation, after targeting $30 billion or more at $1.4 trillion. OpenAI has not confirmed the figures.

Who is paying

Look at the investor lists and a pattern appears. Amazon, Nvidia, Microsoft, Google and other suppliers of chips and cloud capacity are among the biggest backers of the labs that buy their chips and cloud capacity. Much of the money raised flows straight back to them as compute spending. Supporters call that strategic alignment; sceptics call it circular.

Why it matters

  • Scale sets the frontier. Training and serving frontier models now costs tens of billions a year. Only companies that can raise at this scale can compete at the top.
  • Public markets are next. SpaceX has already listed, and Anthropic filed to go public in October. Public companies have to disclose their economics every quarter, which will put real numbers on how profitable frontier AI is.
  • Pushback has started. OpenAI’s smaller-than-planned November close is a small signal, but it is the first visible one that investor appetite has a ceiling.

Sources

  1. SiliconANGLE: Elon Musk confirms SpaceX acquired xAI (Feb 2, 2026)
  2. TNW: OpenAI raises $122 billion at $852 billion valuation (Mar 31, 2026)
  3. TechCrunch: Anthropic raises $65 billion ahead of IPO (May 28, 2026)
  4. CNBC: SpaceX IPO greenshoe over-allotment (Jun 15, 2026)
  5. Investing.com, citing Bloomberg: OpenAI closes $11 billion at $1.25 trillion valuation (Nov 6, 2026)

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