Gemini Nano 4 ships on Samsung foldables with ML Kit Prompt API access

Google’s Android developer blog states that Samsung’s new foldable devices come with Gemini Nano 4, which it calls its latest on-device model. The post credits Nano 4 with support for more than 140 languages and better multimodal understanding.

Apps reach the model through ML Kit’s Prompt API, which sends natural language requests on-device to Gemini Nano. It takes text, or a combination of image and text, and returns text or structured output. Google names structured output and thinking mode as the features to use for on-device intelligence.

The ML Kit release notes dated 14 July 2026 record the structured output API, system instructions and thinking mode arriving in the Prompt API, along with multi-image support and an output token limit raised to 4,096 tokens. A note dated 21 July records a fix for Gemini Nano v4 compatibility in the Prompt API on non-Pixel devices. The Prompt API moved from alpha to beta in January 2026 and carries no service level agreement or deprecation policy.

The post also points developers to app functions, which share an app’s capabilities with the Gemini Intelligence system. Its remaining sections cover adaptive layouts, fold-aware design, CameraX and Wear OS widgets.