OpenAI
→ PBC · $340B · Founded 2015
Total Raised
~$190B+
7 rounds
Current Valuation
$852B
as of Series C
Investor Mix
4
2 strategic · 2 financial
Funding Story
OpenAI raised its first capital ($1B+, Non-profit) in 2015 — philanthropy. Over 11 years and 7 rounds, total funding reached ~$190B+. The most recent raise (Series C, $40B) was backed by SoftBank ($30B) — largest raise. The single largest backer is SoftBank at $30B+ invested.
Cumulative Capital Raised
Round-by-Round Timeline
Non-profit
Est.Jan 1, 2015
Investors
Why this round
“Philanthropy”
MSFT R1
Est.Mar 1, 2019
Investors
Why this round
“Azure engine”
MSFT R2
Est.Jan 1, 2023
Investors
Why this round
“GPT-4; Copilot”
Tender
tenderEst.Jan 1, 2024
Investors
Why this round
“Post-crisis”
Series B
Est.Oct 1, 2024
Investors
Why this round
“Growth”
Stargate
jvEst.Jan 1, 2025
Investors
Why this round
“20 DCs”
Series C
Est.Mar 1, 2026
Investors
Why this round
“Largest raise”
Who Benefits Most?
Strategic calculus behind every major backer — what they invested, what they get back, and what could go wrong.
Microsoft
strategic$14B+ invested
Rank
#1
What they get back (3 benefits)
Risk Assessment
Restructuring risk
Verdict
Concentrated thesis. Returns depend on core investment thesis playing out.
SoftBank
financial$30B+ invested
Rank
#2
What they get back (2 benefits)
Risk Assessment
Huge concentration
Verdict
Concentrated thesis. Returns depend on core investment thesis playing out.
Thrive
financial$3B+ invested
Rank
#3
What they get back (2 benefits)
Risk Assessment
No strategic hedge
Verdict
Hedged bet. Diversified across competing platforms to capture upside either way.
NVIDIA
strategic$1B+ invested
Rank
#4
What they get back (2 benefits)
Risk Assessment
Minimal
Verdict
Strong position. Hardware demand ensures returns regardless of AI market outcomes.
Key Takeaway
OpenAI has a balanced investor base of strategic and financial backers. SoftBank ($30B+) stands out as the anchor investor, with the deepest strategic alignment and most to gain fromOpenAI's continued growth.