Truecaller Partners with Microsoft to Let AI Answer Calls in Your Own Voice

Truecaller, the popular caller ID service, has announced a groundbreaking feature that allows customers to use AI to answer phone calls in their own voice. 

This development, enabled by a partnership with Microsoft, leverages Microsoft's Personal Voice technology, part of Azure AI Speech.

“We firmly believe that the personal voice feature will revolutionize the way our users manage their calls and elevate their overall experience with Truecaller Assistant.

"We look forward to further exploring the potential of AI-powered voice technologies in partnership with Microsoft and delivering even more innovative solutions to our global user base,” said Raphael Mimoun, Product Director and General Manager of Truecaller Israel, in a statement announcing the partnership.

The new feature will be available to Truecaller’s paid users through its AI-powered Assistant. By using Microsoft's Personal Voice technology, introduced in November, Truecaller’s Assistant can now replicate users' voices to greet and respond to callers.

This advancement adds to the existing system-generated voice options that assist in answering phone calls, screening unknown calls, taking messages, responding on behalf of users, or even recording calls.

To activate this feature, Truecaller users must record a short script in their voice after providing consent. This recording creates a digital copy of their voice, which the Assistant can use to answer calls.

While Truecaller’s Assistant typically allows users to edit the introductory greeting template for callers, the company has confirmed to TechCrunch that this template will be restricted when using the personal voice feature.

This restriction ensures that callers are aware they are hearing a digital version of the user's voice. However, users can customize follow-up responses based on their preferences.

Azure AI Speech’s personal voice feature, which is currently available through limited registration-only access, also includes watermarks in the speech outputs it generates.

These watermarks enable detector tools to identify synthetic audio, maintaining transparency and authenticity.

The personal voice feature on Truecaller’s Assistant will begin rolling out over the next few weeks, initially to public beta users in the U.S., Canada, Australia, South Africa, India, Sweden, and Chile. It will later become available to all users in these eligible markets.