While AI is “most likely going to be great,” Musk said “there’s some chance, which could be, 10 to 20%, that it goes bad,” during an interview with Peter Diamandis at the Future Investment Initiative in Riyadh, Saudi Arabia on Tuesday.

Diamandis asked Musk about predictions the billionaire made at the Abundance Summit in March that AI is growing “as fast as 100 times per year,” and that by the end of the decade, AI could become “as capable as 8 billion humans.”