YC Research

Tracked participation in 1 Atlas company, with 0 explicitly attributed leads.

1portfolio companies

1round participations

0lead positions

Dec 2015latest activity

Capital activity

Portfolio

CompanyLatest valuationFirst → latestRoundsRoleAttributed partner

OOpenAIFrontierOpenAI is a frontier AI research and deployment organization structured around a nonprofit mission and a for-profit…$730Bvaluation$399.6BraisedRecent roundsFunding round (new investment + valuation) · Sep 2026$110B · Amazon, NVIDIA +1Funding round (committed capital at close) · Mar 2026$122B · Altimeter, Amazon +37Equity financing (new investment) · Feb 2026$110B · Amazon, NVIDIA +1OpenAI—Dec 2015 → Dec 20151 roundParticipant—

DateCompanyRoundRaisedValuationRoleEvidence

Dec 11, 2015OOpenAIFrontierOpenAI is a frontier AI research and deployment organization structured around a nonprofit mission and a for-profit…$730Bvaluation$399.6BraisedRecent roundsFunding round (new investment + valuation) · Sep 2026$110B · Amazon, NVIDIA +1Funding round (committed capital at close) · Mar 2026$122B · Altimeter, Amazon +37Equity financing (new investment) · Feb 2026$110B · Amazon, NVIDIA +1OpenAIInitial funding commitment (nonprofit donors)$1B—Participant

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DateCompanyRoundRaisedValuationRoleEvidence

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