(Reuters) - Apple has left negotiations to participate in an OpenAI funding round expected to raise about $6.5 billion, the Wall Street Journal said on Friday.

The tech giant recently fell out of the talks for the round, set to close next week, the newspaper said, citing a person familiar with the matter.

Other firms, such as Microsoft and Nvidia, have also been in talks to participate, the report said, adding that Microsoft was expected to invest about $1 billion after having already poured $13 billion into the company.