The launch of OpenAI's updated Sora 2 AI video service kicked off another round of anxiety among musicians, actors and other content creators.

Sora allows users to generate short videos for free by typing in a prompt. The app is only available on iOS devices and is limited to invitees, meaning people need a code to access it. Still, Sora has climbed to the No. 1 spot in Apple's App Store , and OpenAI said this week it hit 1 million downloads in less than five days after launch.

Major Hollywood groups like the Motion Picture Association have objected to OpenAI's copyright policies , and top Hollywood agencies are calling it "exploitation." That's led to changes in how the model handles prompts for certain sensitive categories of generated content.

CNBC's Julia Boorstin got a

See Full Page