Apple will be rolling out the iOS 26 update to compatible iPhone models next month. Among other enhancements and AI features, Apple has confirmed to integrate OpenAI’s new GPT-5 model into Apple Intelligence following the launch. This will further enhance its capabilities.
In addition to iPhones, the new ChatGPT-5 will also be rolled out to other devices supporting Apple Intelligence with iPadOS 26, and macOS Tahoe 26 next month.
The current iPhones use OpenAI’s GPT-4o model to resolve user queries. Now, with the new model, users can take advantage of advanced ChatGPT capabilities. It is however, unclear if GPT-5 will be rolled out to iPhone users as part of developer or public beta testing, before its official release.
IPhone users can add ChatGPT as a default AI assistant to work with Apple Intelligence. Once it's activated, iPhone users can activate Siri to access GPT-5 capabilities. This way, users can prompt ChatGPT directly via Siri for their small queries, tasks, and others.

Another way to use GPT-5 on iPhone is via the Writing Tools. iPhone users can leverage ChatGPT-5 to compose, refine or rewrite text with first-party apps. It also helps users generate AI images.
ChatGPT-5 can also be used with visual intelligence, where users can ask questions related to places and objects. iOS 26 also gives iPhones the ability to conduct image search; therefore, it also gets access to ChatGPT’s latest AI model.
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