Google has spent the past few months making Gemini sound more natural, expressive, and conversational. Now, it appears the company is preparing to give users far more control over how the AI speaks.

Code spotted by Android Authority’s APK Insights – the latest beta version of the Google app suggests Gemini may soon allow users to customise its voice across four separate parameters: Energy, Formality, Warmth, and Speed. Instead of choosing from a fixed list of personalities, users could tweak these characteristics to create a voice that better suits their preferences.

The feature hasn’t been announced yet, but the discovery points to Google’s next step in making AI assistants feel more personal.

Gemini’s voice is getting more flexible

The upcoming controls were discovered in Google app 17.41.12 beta, where new strings reference a dedicated “Customize” section within Gemini’s voice settings.

According to the code, users will be able to adjust four characteristics:

• Energy: Low, Medium, High
• Formality: Low, Medium, High
• Warmth: Low, Medium, High
• Speed: Slow, Normal, Fast

Rather than replacing Gemini’s existing voices, these settings appear designed to build on them. Once configured, the customised voice is expected to carry over to both Gemini Live and the standard chat experience, ensuring a consistent personality across the app.

The approach marks a notable shift. Until now, selecting a Gemini voice has largely meant choosing from Google’s predefined personalities. These new controls suggest Google wants users to shape the assistant’s tone instead of simply picking one that feels closest.

Google already refreshed Gemini’s voices after I/O

The discovery comes shortly after Google rolled out a refreshed voice selection experience following Google I/O.

The redesigned picker replaces the previous carousel interface with a cleaner list view and introduces two new voices: Flare and Glow, replacing the older Nova and Lyra options.

The current lineup now includes:

• Ursa
• Vega
• Pegasus
• Dipper
• Eclipse
• Capella
• Orbit
• Orion
• Flare
• Glow

Interestingly, Google has also removed the descriptive labels that previously explained each voice’s personality, such as “Calm” or “Bright.” Users are now left to judge the voices by listening to them rather than relying on written descriptions.

The update also refreshes Gemini’s interface with thinner, more modern icons for features like the microphone, camera, gallery, file uploads, video, screen sharing, and Gemini Live. These visual changes are rolling out through a server-side update alongside Gemini version 1.0.913571982.

The timing is also interesting. During Google I/O, the company confirmed that regional dialects are on the roadmap for Gemini. Voice customisation would fit neatly into that broader effort to make AI conversations feel less robotic and more tailored to individual users.

Google also isn’t alone in moving in this direction. Apple’s iOS 27 introduces similar controls for Siri AI, allowing users to adjust Pace and Expressivity, with those preferences extending across Siri-powered experiences like Maps and Safari.

Giving users control over tone, warmth, and speaking style may seem like a small change, but it reflects a bigger shift in the AI race. Companies are no longer competing solely on what their assistants can do. Increasingly, they’re competing on how those assistants sound while doing it.