She said in a LinkedIn post that she will be taking some time to observe and to reflect before jumping into a new adventure.

Pineau’s departure concludes an eight-year tenure at Meta. She joined the company in 2017 to lead an A.I. lab in Montreal and remains a professor of computer science at McGill University, where she co-directs the school’s reasoning and learning lab. She is also a member of the Mila Quebec A.I. Institute.

Joelle Pineau is leaving at a challenging time for Meta as it invests billions of dollars to become the market leader ahead of rivals like OpenAI and Google.