Funding round
OpenAI Growth
Reported as "Growth Equity"
OpenAI, which works in AI model design and development in San Francisco, raised $40.00B in a Growth round announced on 31 Mar 2025, led by SoftBank Group, at a $300.00B post-money valuation. 5 firms took part, 1 of them already investors. It is OpenAI's fifth venture round on record; the one before was a Growth in Oct 2024.
$40.00B
Amount raised
$300.00B
Post-money valuation
$260.00B pre-money
5
Investors
1 lead
1.9x
Step-up from the Growth
$157.00B in Oct 2024
13%
Stake sold
new money over the post-money
Valuation
What this round says about the price
This round priced OpenAI at $300.00B after the new money, 1.9 times the $157.00B of its Growth (Oct 2024). The $40.00B bought investors about 13% of the company. It came 5 months after OpenAI's Growth. It is 60% of the $66.20B OpenAI has raised in the venture rounds on record. OpenAI raised again 5 months later: a Growth round of $8.30B in Aug 2025, at $300.00B post-money.
OpenAI's funding rounds
OpenAI has 6 venture rounds on record and 2 other deals. This one is highlighted.
- Growth 22 Jul 2019, led by Microsoft $1.00B
- Growth 1 Jan 2023, led by Microsoft $10.00B$29.00B post-money
- Growth 30 Apr 2023 $300M$29.00B post-money
- Growth 2 Oct 2024, led by Thrive Capital $6.60B$157.00B post-money
- Debt not a venture round 3 Oct 2024 $4.00B
- Growth this round 31 Mar 2025, led by SoftBank Group $40.00B$300.00B post-money
- Growth 1 Aug 2025, led by Dragoneer Investment Group $8.30B$300.00B post-money
- Other not a venture round 31 Mar 2026 $122.00B$852.00B post-money
Investors
Who put money in
SoftBank Group led the round with 4 other firms. SoftBank Group had backed OpenAI before.
Lead investor
- SoftBank Group existing investor
Also in the round
- Microsoft new investor
- Coatue backs 229 venture-backed companies new investor
- Altimeter backs 67 venture-backed companies new investor
- Thrive Capital backs 130 venture-backed companies new investor
Use of proceeds
What the money is for
According to the announcement, the money goes to product development, scaling operations and working capital.
- Product development
- Scaling operations
- Working capital
Comparable rounds
How it compares
429 Growth rounds in Tech Companies within a year either side disclosed an amount; the median was $50M, and this round was 800 times the median. The closest in time, other companies' Growth rounds in Tech Companies:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| ReliaQuest Tech Companies | 31 Mar 2025 | $500M | $3.40B | EQT and KKR |
| Tech Companies | 13 Mar 2025 | $275M | $7.50B | Andreessen Horowitz |
| Tech Companies | 10 Mar 2025 | $250M | not disclosed | not named |
| Tech Companies | 5 Mar 2025 | $140M | $1.00B | KKR and Partners Group |
| Nexthop AI Tech Companies | 25 Mar 2025 | $110M | not disclosed | Lightspeed Venture Partners and Kleiner Perkins |
| Dataminr Tech Companies | 19 Mar 2025 | $85M | not disclosed | NightDragon |
| Mews Tech Companies | 4 Mar 2025 | $75M | not disclosed | Tiger Global |
| Tech Companies | 17 Mar 2025 | $60M | not disclosed | Climate Investment |
Sources
Where this comes from
Reported by 16 sources.
Questions
Frequently asked
How much did OpenAI raise in its Growth round?
OpenAI raised $40.00B in its Growth round, announced in Mar 2025.
Who led OpenAI's Growth round?
SoftBank Group led it, with Microsoft, Coatue, Altimeter and Thrive Capital.
What was OpenAI's valuation at the Growth round?
$300.00B post-money ($260.00B pre-money).
How does it compare with other Growth rounds in Tech Companies?
429 Growth rounds in Tech Companies within a year either side disclosed an amount; the median was $50M, and this round was 800 times the median.
Did OpenAI raise again after this round?
Yes: a Growth round in Aug 2025 of $8.30B at $300.00B post-money.