OpenAI — Funding History
Total raised: $13 billion4 rounds
Valuation History
| Date | Valuation | Source |
|---|---|---|
| Dec 2024 | $157 billion | |
| Oct 2025 | $500 billion |
Funding Rounds
Growth Round
Oct 2024Raised$6.6 billion
Valuation$157 billion
Cumulative$18.6 billion
Lead investor: thrive-capital
Led by Thrive Capital; investors included Microsoft, NVIDIA, SoftBank, and others
wsj.comMicrosoft Extension
Jan 2023Raised$10 billion
Cumulative$12 billion
Lead investor: Microsoft AI
Microsoft's multi-year, multi-billion dollar investment reported at ~$10B; brought total Microsoft commitment to ~$13B
blogs.microsoft.comMicrosoft Investment
Jul 2019Raised$1 billion
Cumulative$2 billion
Lead investor: Microsoft AI
Microsoft's initial $1B investment; coincided with creation of capped-profit entity OpenAI LP
openai.comFounding
Dec 2015Raised$1 billion
Cumulative$1 billion
Initial $1B commitment from founders and backers including Elon Musk, Sam Altman, Peter Thiel, Reid Hoffman, Jessica Livingston
openai.com