The BBC's full voice service for smart speakers has recorded one million unique browsers since its launch in December according to James Purnell, director, radio and education.
In a blog post, Purnell revealed Radios 1, 2 and 4 have proved the most popular services with listeners.
Purnell said the corporation is now working on launching audio content for kids, which should be available "later this spring."
"We'll start small but add new experiences and narratives as time goes on, as we learn about the kinds of interactions that children really like and benefit from," wrote Purnell. "We also aim to offer some of our best children’s stories for bedtime in audio form, but activated by voice - building ways for children to choose a story for themselves."
Purnell said the BBC is also looking at other genres of content including news, current affairs, food and music.