SpaceX is in advanced talks to combine with xAI, according to people familiar with the matter, as billionaire Elon Musk moves quickly to consolidate his empire.

The rocket and satellite maker and the artificial intelligence firm have informed some of their investors about the plans, the people said, asking not to be identified because the information is private. They could announce an agreement as soon as this week, some of the people said.

Deliberations are ongoing and talks could still drag on longer or fall apart, the people said. Representatives for SpaceX and xAI didn’t immediately respond to requests for comment outside regular business hours.

According to Bloomberg News, SpaceX has also explored the possibility of collaborating with Tesla.