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OpenAI

OpenAI

AI · Cloud Computing · Venture Funding

Funding

Amazon completes $50B OpenAI investment, secures roughly 5% stake

July 31, 2026

Raised

$50B

Series C

Amazon paid the full amount even though neither of its own trigger conditions was met, betting the stake locks in years of AWS and chip demand.

  • Amazon wired the final $21.3 billion tranche after June 30, closing out its $50 billion commitment to OpenAI first struck in February and giving it roughly 5% ownership of the company.
  • OpenAI, the maker of ChatGPT, is weighing a delay to its IPO from late 2026 into 2027 while CEO Sam Altman reportedly pushes for a valuation near $1 trillion.
  • Amazon's $50 billion was the largest piece of OpenAI's $110 billion funding round announced February 27 at a $730 billion pre-money valuation, alongside $30 billion each from Nvidia and SoftBank.
  • The money moved in three installments — $15 billion in Q1 for Series C preferred stock, $13.7 billion in Q2, and $21.3 billion after June 30 — completed even though neither an IPO nor an AGI milestone triggered the payout.
  • The deal makes AWS the exclusive third-party cloud provider for OpenAI's Frontier agent platform, expanding a cloud agreement that could total $100 billion over eight years, with OpenAI committing to roughly two gigawatts of Trainium chip capacity.
  • AWS's role became possible only after OpenAI renegotiated its Microsoft contract in April; Microsoft had reportedly been weighing legal action over the Amazon tie-up before that.
  • Amazon is using equity to bind OpenAI more tightly to its own infrastructure, effectively recouping the investment through future AWS cloud and Trainium chip revenue rather than relying on an IPO payoff.

Lead Investors

Amazon

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