Exclusive: Nvidia, SoftBank Make Final $20 Billion Investment in OpenAI’s Last Round

Julia Hornstein & Phoebe Liu (Exclusive briefing): Nvidia and SoftBank each funded the final $10B of their separate $30B pledges into OpenAI’s last round (person with knowledge + SoftBank statement). March round: $122B commitments at $852B post-money including money raised; Amazon committed up to $50B in two parts and completed the full investment in July after OpenAI renegotiated with Microsoft to run on competing clouds. Closing March round clears path for OpenAI’s next private raise targeting $30B at ~$1.4T. SoftBank TSE statement: final installment brings SoftBank’s total OpenAI investment to $64.6B and ownership to ~13%; funded via $11.1B HY bond offering in late September.