Sources: Thrive invested $1B in OpenAI in 2025 at a $285B valuation in a transaction akin to a call option; OpenAI was separately raising at a $830B valuation (Yuliya Chernova/Wall Street Journal)

Yuliya Chernova / Wall Street Journal: Sources: Thrive invested $1B in OpenAI in 2025 at a $285B valuation in a transaction akin to a call option; OpenAI was separately raising at a $830B valuation   —  Joshua Kushner's firm Thrive Capital recently invested in OpenAI at a valuation of $285 billion, about a third of the price …