OpenAI is phasing out the work it does with data-labeling startup Scale AI, cutting ties with the company days after Meta Platforms Inc. invested billions of dollars in it and hired its founder.

Scale AI built its business on the labor of gig workers. But those workers likely won't benefit from their new deal with Meta.

Meta is making its first major minority investment in an outside company as it tries to catch up to a growing field of artificial intelligence rivals.