The story so far
written Nov 1What is happening
OpenAI is seeking to sustain a valuation that requires between $733 billion and $2.79 trillion in annual revenue by its tenth year to justify current equity prices 1. The company closed a funding round on March 31, 2026, which raised $122 billion in committed capital 6. This investment established a post-money valuation of $852 billion 68.
Amazon committed up to $50 billion in equity, beginning with a $15 billion tranche 5. This investment followed a November 3, 2025, agreement where OpenAI pledged to buy $38 billion in cloud capacity from Amazon Web Services over seven years 5. Nvidia contributed $30 billion to the round, while SoftBank served as an anchor investor 57.
What to watch
A public announcement from OpenAI would confirm the final close of the current funding round. A press release or regulatory filing would disclose if the final valuation reaches $1.25 trillion.
The filing of a Form D with the SEC would confirm the total amount of capital raised. The absence of further equity raise announcements within the next 30 days would signal the conclusion of this funding cycle. Full deployment of OpenAI's contracted capacity at Amazon data centers is scheduled for completion before the end of 2026 5.
Read the full brief · how we got here
How we got here
Microsoft filings disclosed that OpenAI lost $11.5 billion in the quarter ending September 30, 2025 3. As of that date, Microsoft had funded $11.6 billion of a total $13 billion commitment to the company 3.
The March 31, 2026, capital raise of $122 billion marked a transition in the company's capital structure 69. Analysts have identified structural vulnerabilities in the AI investment network due to the circular nature of investors also serving as primary suppliers and customers 25.
References · 8
- 1arxiv.org — Is the business of frontier AI companies selling tokens? Value capture and equity prices
- 2papers.ssrn.com — Structural Vulnerability in the AI Investment and Revenue Network: From Pilot Study to a Disclosure-based Extension
- 3techstartups.com — OpenAI is hemorrhaging billions: Microsoft filing reveals OpenAI lost $11.5B last quarter amid AI bubble hype - Tech Startups
- 5stefanus.ai — Capex Entanglement: The Circular Architecture of AI's Interlocked Investors, Customers, and Suppliers
- 6openai.com — Accelerating the next phase of AI | OpenAI
- 7sterlingcharts.com — OpenAI: Valuation, Funding & Metrics | Sterling
- 8iabrief.com — OpenAI's $852 Billion Valuation in 2026: The Largest Private Funding ...
- 9finance.yahoo.com — OpenAI's $122B Capital Raise Signals a Definitive Transition to ...
What would close this
0 of 4 metTimeline
2newest firstWhen we started following: OpenAI closes $122 billion funding round at $852 billion valuation
OpenAI announced on March 31, 2026, that it closed a record-breaking funding round totaling $122 billion in committed capital 1. The financing established a post-money valuation of $852 billion for the company 1. SoftBank co-led the round alongside Andreessen Horowitz and D. E. Shaw Ventures 1. This final total represents an increase from the $110 billion figure OpenAI announced in February 2026, which at the time included investments of $50 billion from Amazon and $30 billion each from Nvidia and SoftBank 12.
As part of the earlier February agreements, Amazon entered a multiyear strategic partnership to develop customized models and expanded its existing agreement with Amazon Web Services by $100 billion over eight years 2. OpenAI reported generating $2 billion in monthly revenue as of March 2026 1. The company has made over $1.4 trillion in infrastructure commitments, including agreements with Nvidia, Advanced Micro Devices, and Broadcom 4. SoftBank's total investment in OpenAI reached approximately $41 billion by December 2025, resulting in an 11% stake in the company 4.
When we started following: OpenAI closes $122 billion funding round at $852 billion valuation
OpenAI closed a funding round on March 31, 2026, raising $122 billion in committed capital 6. The round established a post-money valuation of $852 billion 67.
Investor Participation
- Amazon: Committed up to $50 billion in equity investment, starting with a $15 billion tranche 5. This followed a November 3, 2025, agreement where OpenAI committed to purchase $38 billion in cloud capacity from Amazon Web Services over seven years 5.
- Nvidia: Contributed $30 billion 5.
- SoftBank: Identified as an anchor investor in the round 78.
- Microsoft: Previously funded $11.6 billion of a $13 billion total commitment as of September 30, 2025 3.
Financial Performance Microsoft SEC filings disclosed that OpenAI lost $11.5 billion in the quarter ending September 30, 2025 3. As of early 2026, economic analysis indicates OpenAI and Anthropic face combined year-ten revenue requirements of either $733 billion or $2.79 trillion to support their valuations, depending on financial assumptions 1. Full deployment of OpenAI's contracted capacity at Amazon data centers is scheduled for completion before the end of 2026 5.