How is OpenAI funding all of these deals?

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OpenAI has now:

1. Signed $500 billion Stargate deal
2. Signed $100 billion Nvidia deal
3. Signed $100 billion AMD deal
4. Signed $38 billion Amazon deal
5. Signed $25 billion Intel deal
6. Signed $20 billion TSMC deal
7. Signed $13 billion Microsoft deal
8. Signed $10 Billion Oracle deal
9. Signed “Multi-Billion Dollar” Broadcom deal
10. Launched a browser to compete with Chrome
11. Become the world’s most valuable private company
12. Considered $1 trillion IPO by 2027