Frontier AI lab building general-purpose AI systems including ChatGPT and GPT-5
OpenAI is the AI lab behind ChatGPT, GPT-5, and the o-series reasoning models. Originally founded as a non-profit, it now operates a capped-profit subsidiary majority-funded by Microsoft and SoftBank. In March 2026 it closed a record $122B primary round at an $852B post-money valuation (anchored by Amazon, Nvidia, and SoftBank) — the largest private fundraise on record, ranking it among the most valuable private companies in the world.
AI📍 San Francisco, CAFounded 2015
Current Valuation
$852B
as of 2026-Q1
CENTURION
QL Price
$723B
-15% vs last round
QuantLogix's current estimate for OpenAI, published 2026-09-18 — below the last disclosed round of $852B (2026-Q1).
Confidence
medium
Basis
blended
What backs this price
Last disclosed round
$852B
2026-Q1
weight 0.72
Secondary market print
$852B
2026-06-27
weight 0.61
Public-company comparables
$163B
2025
weight 0.31
How this price has held up
No round has priced for OpenAI since QuantLogix began publishing a price for it, so there is nothing to grade yet. The claim above is on the record from 2026-09-18 and will be graded against the next priced round. See the full accuracy record →
Which publicly-traded funds already hold it, what $10,000 buys, and whether any route is open to you.
Cite this price as QuantLogix QL Price, OpenAI, 2026-09-18 (069e95ba1537bfe5).
The id pins this exact claim, so a citation stays checkable after the price moves.
Model estimate for research — not a quote, target price, or investment advice.
IPO Outlookrumored
Is OpenAI going public in 2027?
An IPO is rumored for 2027, with nothing filed. OpenAI remains private and the date is not the company's.
What is OpenAI's valuation in 2026?
OpenAI is valued at $852B as of 2026-Q1, set by its Late-stage primary ($122B, Mar 2026). That is the last confirmed mark, not a live price — private shares do not trade continuously.
Has OpenAI filed an S-1?
No public S-1 is on file for OpenAI as of 09/18/2026; the IPO is rumored.
Who are OpenAI's investors?
OpenAI's investors include Microsoft, SoftBank, Nvidia, Amazon, Thrive Capital, Khosla Ventures and 4 more.
Can you buy OpenAI stock?
No. OpenAI is a private company — its shares are not listed on any exchange and there is no ticker. The routes to exposure are pre-IPO secondary marketplaces and funds (accredited investors), employee tender offers when the company runs one, and public companies with read-through exposure. QuantLogix maps every route it can verify for OpenAI on its Pre-IPO Access Desk.
Answers are derived from the roster record shown on this page — filing status, last round and confirmed marks. Where the record is silent, the answer says so rather than guessing.
Step-up compares disclosed post-money valuations. Round / post-money is a financing-size ratio, not an ownership or dilution estimate.
Secondary Market
Implied price / share
$703.69
Secondary price return by period
Implied per-share price from private secondary transactions, as of Jun 2026. This is a point estimate, not a quote — the feed carries no bid, ask or spread, and a secondary print is evidence of what someone paid on that date rather than a live market. Compare across every tracked name →
Growth & Valuation
Valuation across funding rounds
Valuation step-up per round
Capital raised per round
Estimated revenue trend
Charts built from publicly disclosed funding rounds and revenue estimates. Approximate, not real-time, not investment advice.
Funding History
Round
Amount
Date
Lead Investor
Post-Money
Late-stage primary
$122B
Mar 2026
SoftBank
$852B
Secondary (tender)
$6.6B
Oct 2025
Employee tender
$500B
Late-stage
$40B
Mar 2025
SoftBank
$300B
Late-stage
$6.6B
Oct 2024
Thrive Capital
$157B
Microsoft investment
$10B
Jan 2023
Microsoft
$29B
Vertical Intelligence — AI / ML
Open models
39
verified organization
Downloads (30d)
64,117,369
across all models
Followers
40,657
Top model
clip-vit-base-patch32
20,755,211 downloads / 30d
Attributed to Hugging Face organization "OpenAI" as of 2026-09-05. Open-weights footprint only — closed-model usage is not publicly measurable. Verify on Hugging Face ↗
Talent Signal
Hiring trend
▶ Hiring steady
+8% vs 2026-08
Open roles
805
via ashby
Product-build share
65%
engineering, research, product, design
Trajectory
steady
heavy product build — 65% of open roles are product-building functions (engineering/research/product) — 239 of 805 open roles are engineering.
Counted from OpenAI's live job board as of 2026-09-15; role functions classified from posting titles. Open-role counts are an activity signal, not headcount. Refreshed monthly.
Founders & Key People
Sam AltmanGreg BrockmanIlya SutskeverElon MuskWojciech Zaremba
Investors
Microsoft · SoftBank · Nvidia · Amazon · Thrive Capital · Khosla Ventures · Sequoia · Andreessen Horowitz · MGX · T. Rowe Price
Products
ChatGPT (consumer)
GPT-5 / o-series API
Sora (video)
DALL-E 4
Operator (agents)
ChatGPT Enterprise
Competitors
Anthropic · xAI · Google DeepMind · Mistral AI
AIFoundation ModelsTop 3 AI Lab
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2026-Q1. Refreshed quarterly.