HISTORICAL P100 / #2

OpenAI

Artificial Intelligence · United States

Historical ranking valuation$840.0BSource snapshot: Jun 19, 2026

Disclosed primary funding in this record

$170.6B

Sum of non-overlapping disclosed USD amounts in confirmed primary financing entries in this record, including separately labeled equity components; not verified lifetime funding. Excludes amounts already included in a later round, announced, reported, database-only, debt, secondary and unclassified events.

4 confirmed primary rounds with disclosed USD amounts · Record through 2026-11-01

THE BUSINESS

Get to know OpenAI.

OpenAI researches and deploys artificial intelligence. Its public products include ChatGPT, while its developer platform provides model access and tools for building AI applications.

OpenAI company overview ↗Source checked Sep 24, 2026

Valuation history

Valuations reported at the time of each round.

Mar 31, 2026$852B post-money2026 financing (final close) · ConfirmedSource ↗

Feb 27, 2026$730B pre-money2026 financing (initial announcement) · AnnouncedSource ↗

Dec 26, 2025$300B post-money at initial announcement2025 SoftBank-led financing (final funded close) · ConfirmedSource ↗

Oct 2, 2025$500BEmployee share sale (secondary) · ReportedSource ↗

Aug 1, 2025$300B at initial announcement2025 financing (interim investor tranche) · ReportedSource ↗

Mar 31, 2025$300B post-money2025 financing (initial announcement) · AnnouncedSource ↗

Oct 2, 2024$157B2024 financing · ConfirmedSource ↗

Apr 28, 2023$27B–$29BVC purchase of existing shares (secondary) · ReportedSource ↗

Funding history

Funding rounds, debt and other financing events.

20sourced events · record as of 2026-11-01

March 2026 $122B committed capital supersedes February's $110B announcement; it does not prove every dollar was drawn. SoftBank says the March 2025 $40B announcement and partial closes became one $41B fully funded financing, not additive rounds. The April 2023 ~$300M tender/share sale was not issuer proceeds. Microsoft's 2021 amount and 2023 investment cash-versus-compute split remain undisclosed by the partners. Founding donor commitments were not 2015 equity raised. Headline association; not a reviewed issuer link. Unlinked article observations are not independently reconciled financing events. This is covered public-source history, not an exhaustive issuer ledger.

Oct 22, 2026LATEST SOURCED

rumor

OpenAI’s up-to-$30B round targets $1.25T

Investors undisclosed

Amount$30BValuationUndisclosed

Oct 7, 202619

rumor

Broadcom works on $50B-plus debt for OpenAI chips

Investors undisclosed

Amount$50BValuationUndisclosed

Oct 5, 202618

rumor

OpenAI approaches MGX and BlackRock for $30B round

Investors undisclosed

Amount$30BValuationUndisclosed

Oct 1, 202617

rumor

Nvidia, SoftBank finish reported $20B OpenAI tranches

Investors undisclosed

Amount$20BValuationUndisclosed

Sep 29, 202616

rumor

OpenAI reportedly seeks at least $30B at about $1.4T

Investors undisclosed

Amount$30BValuationUndisclosed

Sep 15, 202615

rumor

SB Energy plans up to $500M Japan share sale

Investors undisclosed

Amount$500MValuationUndisclosed

Mar 31, 202614

primary

2026 financing (final close)

SoftBank Group (lead) · Andreessen Horowitz (lead) · D. E. Shaw Ventures (lead) · MGX (lead) · TPG (lead) · Accounts advised by T. Rowe Price Associates (lead) · Amazon · NVIDIA · +8 more

Amount$122B committed capitalValuation$852B post-money

Feb 27, 202613

primary

2026 financing (initial announcement)

SoftBank ($30B announced) · NVIDIA ($30B announced) · Amazon ($50B announced)

Included in 2026-03-31 $122B final close; not added again to the confirmed-raised sum.

Amount$110BValuation$730B pre-money

Dec 26, 202512

primary

2025 SoftBank-led financing (final funded close)

SoftBank Group ($30B total) (lead) · Third-party co-investors ($11B total)

SoftBank says its $22.5B December second closing plus $7.5B April first closing and $11B of third-party co-investment fully funded a final $41B aggregate. This is one financing with partial closes, not $41B plus the earlier $40B announcement or $8.3B interim tranche.

Amount$41B final aggregate fundingValuation$300B post-money at initial announcement

Oct 2, 202511

secondary

Employee share sale (secondary)

Thrive Capital · SoftBank Group · Dragoneer Investment Group · MGX (Abu Dhabi) · T. Rowe Price

Reported employee/ex-employee liquidity, not issuer capital raised; the sale valued OpenAI at about $500B.

Amount$6.6B of employee shares soldValuation$500B

Aug 1, 202510

primary

2025 financing (interim investor tranche)

Investors undisclosed

Included in 2025-12-26 $41B final funded close; not added again to the confirmed-raised sum.

Reported $8.3B tranche of the SoftBank-led 2025 financing, not a separate additive round. Exact investor allocations and an independent August close are not issuer-confirmed here.

Amount$8.3BValuation$300B at initial announcement

Mar 31, 202509

primary

2025 financing (initial announcement)

SoftBank Group (lead)

Included in 2025-12-26 $41B final funded close; not added again to the confirmed-raised sum.

Amount$40BValuation$300B post-money

Oct 3, 202408

debt

Revolving credit facility (undrawn at announcement)

Investors undisclosed

The $4B facility was undrawn at announcement and is debt capacity, not equity raised or $4B of proceeds received.

Amount$4B undrawn borrowing capacityValuationUndisclosed

Oct 2, 202407

primary

2024 financing

Investors undisclosed

The issuer confirms $6.6B raised but does not label this a Series E extension; investor names are not all confirmed by this announcement.

Amount$6.6BValuation$157B

Apr 28, 202306

secondary

VC purchase of existing shares (secondary)

Sequoia Capital · Andreessen Horowitz · Thrive Capital · Founders Fund · K2 Global

Corrected: Thrive replaces Tiger; secondary, not issuer proceeds.

Amount~$300MValuation$27B–$29B

Jan 23, 202305

other

Microsoft multiyear strategic investment

Microsoft (lead)

Microsoft and OpenAI confirmed a multiyear, multibillion-dollar investment but disclosed neither exact value nor cash/compute split. Approximately $10B is media-reported, not verified issuer equity proceeds.

Amount~$10B reported; partner amount undisclosedValuationUndisclosed

202104

other

Microsoft follow-on investment (year disclosed)

Microsoft (lead)

The partners refer to investments in 2019 and 2021 without an amount or exact 2021 close date. The previous database's $2B Series C designation is uncorroborated.

AmountUndisclosedValuationUndisclosed

Jul 22, 201903

primary

Microsoft strategic investment

Microsoft (lead)

Amount$1B investmentValuationUndisclosed

201902

primary

Khosla Ventures early OpenAI investment

Khosla Ventures (lead) · Reid Hoffman’s charitable organization

Khosla described a 2018 commitment and 2019 investment; precise close date and implied valuation are not established. The ~$50M size is founder-interview reporting, not issuer-confirmed.

Amount~$50M (Khosla)ValuationUndisclosed

Dec 11, 201501

grant

Founding donor commitments

Elon Musk · Sam Altman · Peter Thiel · Reid Hoffman · Amazon Web Services

The issuer described $1B in pledged donations, expected to spend only a tiny fraction in the next few years. This is not a $1B or $130M 2015 company equity round.

Amount$1B pledged donor commitments (not equity capital raised)ValuationUndisclosed

Financing participants

Investors, lenders and other parties named in funding announcements.

SoftBank Group

2026 financing (final close) · Mar 31, 2026 · Lead participant · primary · Confirmed · Confirmed source ↗

Employee share sale (secondary) · Oct 2, 2025 · Participant · secondary · Reported · Reported source ↗

2025 financing (initial announcement) · Mar 31, 2025 · Lead participant · primary · Announced · Announced source ↗

Andreessen Horowitz

2026 financing (final close) · Mar 31, 2026 · Lead participant · primary · Confirmed · Confirmed source ↗

VC purchase of existing shares (secondary) · Apr 28, 2023 · Participant · secondary · Reported · Reported source ↗

D. E. Shaw Ventures

2026 financing (final close) · Mar 31, 2026 · Lead participant · primary · Confirmed · Confirmed source ↗

MGX

2026 financing (final close) · Mar 31, 2026 · Lead participant · primary · Confirmed · Confirmed source ↗

TPG

2026 financing (final close) · Mar 31, 2026 · Lead participant · primary · Confirmed · Confirmed source ↗

Accounts advised by T. Rowe Price Associates

2026 financing (final close) · Mar 31, 2026 · Lead participant · primary · Confirmed · Confirmed source ↗