With the latest iOS 27 developer beta, Apple is giving testers an early look at one of the upcoming improvements to its AI-powered Siri: the ability to adjust how quickly and expressively the AI assistant speaks. In iOS 27 beta 3, available today, Apple has enabled voice controls for “Rhythm” and “Expressiveness” that were previously
With the latest iOS 27 developer beta, Apple is giving testers an early look at one of the upcoming improvements to its AI-powered Siri: the ability to adjust how quickly and expressively the AI assistant speaks. In iOS 27 beta 3, available today, Apple has enabled voice controls for “Rhythm” and “Expressiveness” that were previously labeled “Coming Soon” in early developer betas.
The update is part of Apple’s broader effort to make Siri feel more natural and personal, as it rebuilds the assistant around generative AI. Like ChatGPT and others that offer AI voice assistants, allowing users to customize how the AI sounds is an important aspect of helping connect people with new technology.
However, ChatGPT’s voice customization options allow users to go even further, as the ability to adjust the warmth and enthusiasm of the AI was shot Available in December 2025, along with options to configure the style and base tone. The latter allows users to adjust the OpenAI assistant to be more friendly, professional, sincere or quirky, among other styles. This is reflected not only in how ChatGPT speaks, but also in how it presents information to the user.
First introduced at Apple’s Worldwide Developers Conference (WWDC 26) in June, Siri voice controls allow users to personalize their Siri experience beyond simply choosing a male or female-sounding assistant. Now, beta testers will be able to switch between a variety of voices with different accents and then use sliders to change how slowly or quickly Siri speaks and how much human emotion her voice conveys.
As you make adjustments, Siri will practice saying some common things, like “You have a new message,” so you can get a feel for what different voices sound like.
The AI version of Siri is deeply integrated into the updated version of iOS, where it will allow iPhone owners to start conversations by speaking, swiping down from the Dynamic Island at the top of the screen and typing, tapping the phone’s side button, or even using the new standalone Siri app.
Other minor updates are also rolling out with iOS 27 beta 3, including an updated Reminders app icon. (We should note that some people on
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