OpenAI has officially closed the largest private tech funding round in history — $40 billion — valuing the ChatGPT creator at $300 billion, per the company’s announcement Monday. The round eclipses previous records nearly 3x over, with SoftBank alone contributing $30 billion, joined by Microsoft, Coatue, Thrive, and Altimeter.

That places OpenAI among the three most valuable private tech firms globally, just behind SpaceX ($350B) and tied with ByteDance ($300B).

Funding Breakdown

  • $30B: SoftBank
  • $10B: Syndicate (Microsoft, others)
  • $18B earmarked for Stargate compute initiative
  • Initial $10B invested now, remainder by end of 2025

⚠️ Caveat: SoftBank’s full commitment is contingent on OpenAI restructuring into a for-profit entity by Dec. 31 — or its investment could be reduced to $20B.

The Restructuring Race

OpenAI’s hybrid “capped-profit” LP structure must shift for investor equity to trigger — a legal and regulatory maze involving Microsoft, the California Attorney General, and a lawsuit from Elon Musk.

If successful, the original nonprofit would spin out, and current convertible notes would turn into equity.

Why It Matters

  • 500M weekly ChatGPT users (up 100M in 30 days)
  • Revenue forecast: $12.7B by end of 2025
  • Market: Generative AI expected to top $1T in revenue within a decade

“We added one million users in the last hour,” CEO Sam Altman posted on X Monday.

Meanwhile, Altman is stepping back from daily ops to refocus on research and product, while COO Brad Lightcap will oversee day-to-day execution.

This isn’t just a capital injection — it’s a bet on OpenAI becoming the operating system for the AI economy. The pressure is on to deliver scale, profit, and a clean structure before year-end.

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