Uber is expanding its fleet of gig workers and creating a new category: AI annotation and data labeling.

The ride-hailing company has started hiring contractors for a new AI and data labeling division called Scaled Solutions. These workers complete projects for Uber’s internal business units but are also serving outside customers including self-driving vehicle company Aurora Innovation and video game developer Niantic, according to reporting from Bloomberg.

Uber has started recruiting contractors in countries including the U.S., Canada, and India, among others, Bloomberg reported.

Uber’s move into data labeling comes as that market has become increasingly hot, thanks to the rise of AI. For example, Scale AI is one company in the sector seeing increased demand. The company raised a $1 billion round at a $13.8 billion valuation earlier this year after only raising $600 million prior in its eight-year history.