Microsoft announced a new multiyear, multibillion-dollar investment with ChatGPT-maker OpenAI on Monday.

Microsoft declined to provide a specific dollar amount, but Semafor reported earlier this month that Microsoft was in talks to invest as much as $10 billion.

The deal marks the third phase of the partnership between the two companies, following Microsoft’s previous investments in 2019 and 2021. Microsoft said the renewed partnership will accelerate breakthroughs in AI and help both companies commercialize advanced technologies in the future.

“We formed our partnership with OpenAI around a shared ambition to responsibly advance cutting-edge AI research and democratize AI as a new technology platform,” Microsoft CEO Satya Nadella said in the release.

OpenAI works closely with Microsoft’s cloud service Azure. In July 2019, Microsoft backed OpenAI with $1 billion, and the investment made Microsoft the “exclusive” provider of cloud computing services to OpenAI. Microsoft said Monday that Azure will continue to serve as OpenAI’s exclusive provider.