Google is developing a new feature that will allow users to customize the voices of their Gemini AI assistant across four distinct parameters. According to code analysis of the latest Google app beta (version 17.41.12), the company is preparing sliders for Energy, Formality, Warmth, and Speed. This move follows the release of two new voice options after Google I/O.
The four parameters for Gemini voice customization
The new controls will let users adjust Energy (low, medium, high), Formality (low, medium, high), Warmth (low, medium, high), and Speed (slow, normal, fast). These options will enhance the experience in both Gemini Live and the standard chat interface, offering a level of adaptation previously unseen. Google has not yet officially announced the feature, but at I/O it had already hinted at the arrival of regional dialects.
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This initiative comes amid fierce competition in the voice assistant market. Apple, with iOS 27, introduced the ability to customize Siri AI's pace and expressivity, extending modifications to Maps and Safari as well. Other companies like Anthropic are also pushing for greater transparency and control over AI, as discussed in our article Anthropic Pushes States for Stricter AI Laws.
Why voice customization matters in AI interaction
The ability to fine-tune an assistant's voice has deep implications for accessibility and user engagement. A more formal voice may suit professional contexts, while a warmer, faster tone can improve daily use. Industry experts believe that customizing these parameters reduces the perceived gap between human and machine, fostering more natural conversations. Unsurprisingly, Google has invested heavily in Gemini, as seen in recent integrations like Instacart and Canva into AI search.
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Internally, the code indicates that customized voices will apply to both Gemini Live and text chat, ensuring consistency across modes. For a deeper look at AI safety challenges, read our article on OpenAI's GPT-Red.
Comparison with iOS 27 and future outlook
Google's move aligns with Apple's, but with a key difference: while Siri focuses on pace and expressivity, Gemini offers a broader set of emotional parameters. This could be a competitive advantage, especially as conversational AI becomes more central. The feature is likely to be officially announced later this year, possibly alongside regional dialect expansion. For additional context, see the Wikipedia page on Gemini (chatbot).
Source: https://9to5google.com/2026/07/16/customize-gemini-voices
