Chinese artificial intelligence start-up DeepSeek has overtaken rivals including OpenAI's ChatGPT to become the most downloaded free application in the United States. The results sent a shock wave through the AI sector worldwide and cast doubt on whether US technology firms could sustain their leadership position.

Universal Music Group (UMG) , the world's biggest music label, and Swedish streaming giant Spotify have reached a new multi-year agreement for recorded music and music publishing, they said on Sunday.

The buzz around Chinese AI startup DeepSeek began picking up steam earlier this month, when the startup released R1, its model that rivals OpenAI’s o1.