AI Stack Monitor

Market closed · last close Oct 30

The stack / labs

OpenAI

Private Primary layer Labs Roles Apps
Last closed mark
$852B
Weight in AIX
Not a constituent

Valuation marks

Dashed step line: closed rounds. Hollow markers: press reports and secondary estimates, never part of the line.

$350B$700B$1.05T$1.40TAprJulOct2026AprJulOct2025-03-31: $300B2026-03-31: $852B2026-09-29: $1.40T (reported)reported2026-10-01: $1.20T (estimate)estimate
DateValuationBasisKind and statusNoteSource
Oct 1, 2026$1.20TimpliedSecondary estimate reportedsecondary mark; month onlypremieralts.com
Sep 29, 2026$1.40TimpliedReported talks reportedtalks for at least $30B pre-IPOtechcrunch.com
Mar 31, 2026$852Bpost-moneyPrimary round closed$122B committedbuiltin.com
Mar 31, 2025$300Bpost-moneyPrimary round closed$40B round; source dates it April 2025; verify daynairametrics.com

Relationships

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RelationshipTypeStatusAmountSinceSource
Backed by Amazon
Anchor investor in the $122B round
equityactiveundisclosedMar 31, 2026alphaspread.com
Backed by Nvidia
Anchor investor in the $122B round
equityactiveundisclosedMar 31, 2026alphaspread.com

News

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