What is OpenAI worth?

Spearhead's calibrated mark for OpenAI is $765B as of 2026-06-10, with an 80% conformal interval of $389B–$1.5T (illustrative/backtest).

How is OpenAI's valuation calculated?

The mark blends typed observations from publicly reported events on a disclosed recency half-life; the interval comes from split conformal prediction on walk-forward residuals, widened by staleness. Full methodology: https://pegasusthreesixty.com/methodology

◆ SPEARHEADCOMPANY PAGE2026-06-14

OpenAI

Name: OpenAI pre-IPO valuation mark (Spearhead)
License: https://pegasusthreesixty.com/methodology

Frontier AI research and deployment company behind GPT models and ChatGPT. Closed the largest private raise in history in March 2026 and confidentially filed for an IPO in June 2026.

$765B[$389B – $1.5T]0.0%

80% BAND · AS OF 2026-06-10 · STALENESS 71D · CONFIDENCE 85% · 3 SOURCES · METHODOLOGY v0.2.0 →

00 / Mark history

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Company detail pages on Research show the headline mark and provenance only. Pro unlocks charts, mark events, and both interval bands. Illustrative / backtest — not investment advice.

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The headline mark and 80% band above are public. Full history, 95% bands, and mark events require Pro. Sign up · See plans. Illustrative / backtest — not investment advice.

01 / Provenance

Every input, with its citation

Marks are derived exclusively from the rows below. Excluded rows are shown for completeness and never enter the calculation.

Observed	Type	Implied valuation	Source	Quality	In mark	Cited
2026-03-31	Funding round	$852B	CNBC	0.90	INPUT	VERIFIED
2025-10-02	Secondary print	$500B	Bloomberg	0.65	INPUT	VERIFIED
2025-03-31	Funding round	$300B	CNBC	0.90	INPUT	VERIFIED
2024-10-02	Funding round	$157B	CNBC	0.90	INPUT	VERIFIED
2024-02-16	Tender offer	$80B	The Information	0.80	INPUT	VERIFIED

This page is a backtest replay of publicly reported events. Indicative valuations, not transactable prices. Underlying assets are illiquid; inputs are limited to publicly reported events with source attribution. Pegasus Three Sixty and SpearHead are an information-only valuation product, do not hold client balances, and do not provide investment recommendations. Reported valuations inherit the share-count basis of the cited articles; bases differ between outlets and are recorded in event notes.