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OpenAI closes record $122B funding round at $852B valuation

★★★★businessOpenAIAmazonNvidiaSoftBankconfidence: high

On March 31, 2026 OpenAI closed the largest private funding round in history — $122B of committed capital at an $852B post-money valuation — led by Amazon ($50B, $35B of it contingent on an IPO or AGI), Nvidia ($30B) and SoftBank ($30B).

Key facts

What happened

OpenAI completed a $122B raise at an $852B valuation, with Amazon as the largest investor and a sizable portion of its check tied to an IPO or AGI milestone. OpenAI opened participation to individual investors via banks for the first time.

Why it matters

The round funds OpenAI's massive compute build-out (Stargate) and anchors expectations of an eventual IPO; the AGI-contingent tranche makes "AGI" a contractual financial trigger. The September reports of a $1.2–1.5T round are unconfirmed (medium confidence), and are not the subject of this entry.

Changelog

  • 2026-09-29: created

Related events

  1. Sam Altman rules out a 2026 OpenAI IPO, calling it "ill-advised" given AI safety concerns ★★★
  2. SoftBank sells more than $11B of junk bonds to fund its OpenAI investment ★★★

Sources (4)

id: 2026-03-31-openai-122b-funding-round · updated 2026-09-29 · open in the interactive timeline