Semafor earlier reported that the potential investment would involve other venture firms and could value OpenAI at about $29 billion, citing people familiar with the talks. Documents sent to investors had targeted end-2022 for a deal closing, it added.
Microsoft Corp. is in discussions to invest as much as US$10 billion in OpenAI, the creator of viral artificial intelligence bot ChatGPT, according to people familiar with its plans.
The proposal under consideration calls for the Redmond, Washington-based software giant to put the money in over multiple years, though the final terms may change, the people said, asking not to be named discussing a private matter. The two companies have been discussing the deal for months, they added.

