Samsung will allow third-party developers to build apps for Bixby from later this year in a bid to boost the voice assistant's capability, the CEO of the technology giant's mobile division has told CNBC.

The news comes after Samsung announced the Galaxy Home smart speaker last month, its answer to the Amazon Echo and Google Home and which will have Bixby built in, so users can ask it questions and request it to carry out tasks.

But Bixby is much newer than both its voice assistant competitors Google Assistant and Amazon Alexa. As a result, Samsung wants to boost its use cases by opening up to developers.

DJ Koh, the CEO of Samsung's mobile unit, told CNBC that the company will release a software developer kit (SDK), as well as an application programming interface (API). The SDK will allow developers to make apps with Bixby, while the API will allow Bixby to be integrated with other apps.

Koh said that these updates would be released in November at the Samsung Developer Conference in San Francisco.