We are away for Christmas, so this is a repeat of a previous episode.

AI companies are seeing a monumental surge in investment – but some experts are now warning of the risks of an economic bubble.

Could AI be the biggest market bubble since the dot-com crash? Or is it a genuinely transformative technology that’s simply taking time to deliver? We speak to the BBC’s Evan Davis.

Producers: Aron Keller and Xandra Ellin

Executive Producer: James Shield

Mix: Travis Evans

Senior news editor: China Collins

Photo: Artificial Intelligence mobile apps. Hannibal Hanschke/EPA/Shutterstock