(Reuters) -OpenAI co-founder Greg Brockman has returned to the artificial intelligence startup three months after taking a leave from his role as president, Bloomberg News reported on Tuesday, citing a person familiar with the matter.

Brockman has been working with CEO Sam Altman on creating a new role for him to focus on significant technical challenges, the report said, citing an internal memo.

His return comes after a series of departures at OpenAI, including its former Chief Technology Officer Mira Murati.

OpenAI and Brockman did not immediately respond to Reuters requests for comment.

(Reporting by Jaspreet Singh in Bengaluru; Editing by Shailesh Kuber)

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