[OpenAI is in deep discussions with TPG, Bain Capital, and others about forming a joint venture to distribute AI products] Sources say OpenAI is in deep discussions with TPG, Bain Capital, Advent, and Brookfield about forming a joint venture to distribute AI products. Sources also state that private equity firms may commit $4 billion in equity investment to OpenAI's $10 billion joint venture. Sources reveal that OpenAI plans to offer preferred shares in the joint venture, while Anthropic has proposed offering common shares.