OpenAI · Series A

Creator of ChatGPT, GPT-4, and the leading frontier AI lab.

Amount

$11M

Round

Series A

Valuation

—

Announced

Jul 2019

Notes

Microsoft strategic investment

Other OpenAI rounds

Date	Round	Amount
Mar 2026	Series E	$122B	Details →
Oct 2025	Series b	$10.3B	Details →
Mar 2025	Series D	$40B	Details →
Jan 2024	Series a	$10B	Details →
Jan 2023	Series C	$10B	Details →
Jan 2021	Series B	$1B	Details →