OpenAI just announced its GPT-5 AI model on Thursday, but you won’t be able to use it with Apple Intelligence’s ChatGPT integration until iOS 26, iPadOS 26, and macOS Tahoe 26, Apple confirmed to 9to5Mac.

However, the chat portion of Siri will be mostly the same, so ChatGPT will still be a major part of Apple Intelligence throughout 2026. Apple is reportedly working on a “true modernized, conversational version of Siri,” using a homegrown large-language model, but that isn’t expected to arrive until iOS 27.

Your iPhone's Apple Intelligence will be upgraded to use OpenAI’s new GPT-5 model with the release of iOS 26 next month. More details here.

OpenAI finally released its long-awaited GPT-5 model this week, unsurprisingly proclaiming it its best yet with regards to coding, accuracy, safety and more. CEO Sam Altman even compared the jump up in quality to when the iPhone first adopted a Retina display in a press briefing ahead of the announcement. Big talk indeed.

Following OpenAI's announcement of ChatGPT's upgrade to GPT-5, iPhone owners are probably wondering when the new version will be made available to iPhone and Apple Intelligence owners.

Apple is reportedly planning to upgrade Apple Intelligence’s ChatGPT integration with GPT-5 with the release of iOS 26, iPadOS 26, and macOS Tahoe 26 later this fall.

OpenAI's GPT-5 model went live for most ChatGPT users this week, but lots of people use ChatGPT not through OpenAI's interface but through other platforms or tools. One of the largest deployments is iOS,

Apple is set to integrate OpenAI’s GPT-5 into iOS 26, iPadOS 26, and macOS Tahoe 26 in September alongside the iPhone 17 launch. The upgrade will replace GPT-4o, bringing smarter Siri responses, advanced AI features,

Apple Intelligence's ChatGPT integration will use GPT-5 in next-gen software updates for the iPhone and more, Apple has confirmed.