Google Previews Gemini Nano 4 for Android, Launching on Flagship Devices This Year

Google has unveiled Gemini Nano 4, a new generation of on-device language models for Android, built on the foundation of Gemma 4. The model is available now in early access through the AICore Developer Preview and will ship on new flagship Android devices later in 2026.

Two Model Variants

Google is releasing two versions of Gemini Nano 4:

Gemini Nano 4 Fast (E2B variant): Optimized for speed, claimed to be 3x faster than the E4B model with lower latency and fastest response times.

Gemini Nano 4 Full (E4B variant): Designed for higher reasoning power and complex task handling, positioning it as the more capable version.

Performance Improvements

Compared to previous versions, Gemina 4 claims to deliver:

• 4x faster execution speed on Android
• 60% lower battery consumption
• Multimodal understanding across text, image, and audio
• Support for 140+ languages natively

Expanded Capabilities

Google highlights four key capability improvements in the new model:

Reasoning: Chain-of-thought and conditional logic now return higher-quality results. Example use case includes content moderation decisions with structured reasoning.

Math: Improved numerical reasoning for financial calculations, budgeting, and quantitative problem-solving.

Time understanding: Enhanced temporal reasoning for calendar, reminder, and alarm applications.

Image understanding: Better optical character recognition (OCR) for chart understanding, visual data extraction, and handwriting recognition.

Developer Access and Roadmap

Developers can sign up for the AICore Developer Preview immediately. Code written for Gemma 4 will automatically work on Gemini Nano 4-enabled devices, simplifying the development transition.

Google plans several updates during the preview period, including:

• Tool calling support
• Structured output
• System prompts
• Thinking mode in Prompt API

The company has not disclosed specific pricing, parameter counts, or detailed benchmark comparisons against competing on-device models.

What This Means

Gemini Nano 4 positions Google to compete more effectively in the on-device AI market, particularly against Apple's integration of language models into iOS. The 3x speed improvement and 60% battery reduction are material gains for Android manufacturers building AI-native devices. The multimodal capabilities and 140+ language support expand use cases beyond simple text completion. The spring 2026 availability window suggests Gemini Nano 4 will be integrated into Google's own Pixel flagships and Samsung's Galaxy S series by summer. Developers should note that early API design (thinking mode, structured outputs) is still in flux, making this preview period critical for feedback before general availability.