What is OpenAI worth?
$475.5Bimplied by the PA Mark · Sep 2026
OpenAI last raised $520.0M in its Debt - General (Jul 2026).
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See the evidence behind this price
- ·Post-money valuations for all 24 rounds
- ·The complete investor list — 194 names
- ·Watchlist + deal alerts for OpenAI
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Valuation timeline
10 marks · Jan 2023 – Sep 2026▮▮
Secondary Transaction - Private8 roundsPA Mark
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Funding history
24 rounds| Date | Round | Raised | Post-money | $/share |
|---|---|---|---|---|
| Jul 2026 | Debt - General | $520.0M | ▮ | ▮ |
| Jun 2026 | IPO | — | ▮ | ▮ |
| Mar 2026 | Later Stage VC | $122.0B | ▮ | ▮ |
| Dec 2025 | Later Stage VC | — | ▮ | ▮ |
| Oct 2025 | Secondary Transaction - Private | $6.6B | ▮ | ▮ |
| Mar 2025 | Series F | $40.0B | ▮ | ▮ |
| + 18 earlier rounds · a free account shows the full history | ||||
How OpenAI's valuation is determined
Private company valuations aren’t quoted on an exchange — they’re established in moments: a priced funding round sets a post-money valuation, secondary trades print at a price per share, and SEC-registered funds holding the stock report fair-value marks in their N-PORT filings.
For OpenAI, we compose those signals into the PA Mark — a weighted composite of 13 recent pricing inputs, decayed by age and reset on new rounds. The implied valuation multiplies the mark by shares outstanding. Full methodology →
Frequently asked
- What is OpenAI worth?
- OpenAI's implied valuation is $475.5B, based on the PA Mark composite price of about $688 per share as of Sep 2026.
- How much has OpenAI raised?
- OpenAI has raised $178.1B in total funding across 24 recorded rounds.
- When did OpenAI last raise?
- OpenAI last raised in Jul 2026 (Debt - General), raising $520.0M.