Khosla Ventures has reportedly raised $405 million to support OpenAI, as revealed in a recent regulatory filing. This new funding is part of a larger $6.6 billion round, where Khosla's stake is estimated at 6%. However, Khosla may not have directly contributed any substantial capital, as the funds were primarily sourced from other investors through a special purpose vehicle (SPV). The terms of Khosla's participation remain undisclosed, but it is known that their previous investment in OpenAI in 2019 has paid off significantly as OpenAI's valuation soared to $157 billion.