--- title: "Nutrient iOS SDK 27.2 release notes" canonical_url: "https://www.nutrient.io/guides/ios/releases/27-2/" md_url: "https://www.nutrient.io/guides/ios/releases/27-2.md" last_updated: "2026-11-11T00:00:00.000Z" description: "Nutrient iOS SDK 27.2 adds an API for interacting with documents through a language model and extends progressive rendering to more pages." --- 11 November 2026 Nutrient iOS SDK 27.2 adds an API for interacting with documents through a language model. Apps can use it without presenting the built-in AI Assistant chat UI. This release also improves AI Assistant context retrieval, document editing, and progressive rendering, with layout fixes for iPhone Duo. For Instant, a new API reports changes that Document Engine rejects during synchronization. Nutrient iOS SDK 27.2 requires Xcode 27.2. For the full list of changes, see our [changelog](https://www.nutrient.io/guides/ios/changelog.md#27.2.0). ## Use AI Assistant in your own interface Until now, on-device AI Assistant only worked through its chat UI. [`AIAssistantModelSession`](https://www.nutrient.io/api/ios/documentation/pspdfkit/aiassistantmodelsession) gives your app the same document context and language model for its own features, such as summaries, explanations, or generated values. It can search the whole document or limit retrieval to a page and its nearby pages. Use a text response for a conversation or a typed response for data your app can process. The session uses Apple’s system model by default. On iOS 27 or later, you can provide your own model that conforms to the Foundation Models `LanguageModel` protocol. The [Catalog example](https://github.com/PSPDFKit/pspdfkit-ios-catalog/blob/master/Catalog/Examples/Top/AIAssistantExample/AIStudyCompanionExample.swift) and video below show the API in use. On-device AI Assistant now combines semantic and full-text search to find more relevant passages. This gives each question better document context, including in large PDFs. After each save to the PDF file, it rebuilds its index for the next question, so answers reflect the saved changes. The SDK rebuilds existing indexes once after you update it. On-device AI Assistant is a license component for Nutrient iOS SDK. The default Apple model also requires a compatible device with Apple Intelligence enabled. See the [on-device AI Assistant guide](https://www.nutrient.io/guides/ios/ai-assistant/on-device.md) for details. ## Progressive rendering for more pages Progressive rendering now covers more pages. Pages with blend modes such as Lighten show partial updates as they render. Before 27.2, iOS waited for the full render on these pages. Progressive rendering remains enabled by default, so no code changes are needed. ## iPhone Duo On iPhone Duo, search results and toolbars respect the uneven safe areas, and popovers opened from the vertical bar are wide enough to read. When the device is unfolded, pages also use the space left by the bar when it hides. These changes build on the [27.1 improvements](https://www.nutrient.io/guides/ios/releases/27-1.md) and require no code changes in your app. --- ## Related pages - [14 12](/guides/ios/releases/14-12.md) - [26 1](/guides/ios/releases/26-1.md) - [26 10](/guides/ios/releases/26-10.md) - [26 11](/guides/ios/releases/26-11.md) - [26 12](/guides/ios/releases/26-12.md) - [26 2](/guides/ios/releases/26-2.md) - [26 3](/guides/ios/releases/26-3.md) - [26 4](/guides/ios/releases/26-4.md) - [26 5](/guides/ios/releases/26-5.md) - [26 6](/guides/ios/releases/26-6.md) - [26 7](/guides/ios/releases/26-7.md) - [26 8](/guides/ios/releases/26-8.md) - [26 9](/guides/ios/releases/26-9.md) - [26](/guides/ios/releases/26.md) - [27 1](/guides/ios/releases/27-1.md) - [27](/guides/ios/releases/27.md)