Google launched the Nano Banana 2 image generation model, technically named Gemini 3.1 Flash Image, which the company stated produces more realistic images faster than its predecessor. The model will become the default image generator in the Gemini app’s Fast, Thinking, and Pro modes.
This release expands the availability of Google’s image generation technology to a wider set of products and markets. It establishes the model as the standard for image creation across the Gemini app, the Flow video editing tool, and Google Search results via Lens and AI Mode in 141 countries. The rollout covers the Google app and web on desktop and mobile devices.
Nano Banana 2 retains high-fidelity characteristics from the November 2025 Pro model but generates images more quickly. The company said the model supports resolutions from 512px to 4K and various aspect ratios. It can maintain character consistency for up to five characters and fidelity for up to 14 objects in a single workflow.
The model enables complex requests with detailed nuances for image generation, according to Google. It allows media creation with more vibrant lighting, richer textures, and sharper details. These features support improved storytelling in generated images.
Subscribers to Google AI Pro and Ultra plans can continue to use the Nano Banana Pro model for specialized tasks. Users can regenerate images via the three-dot menu to access the Pro version. This option remains available for specific workflows.
For developers, Nano Banana 2 is available in preview through the Gemini API, Gemini CLI, and the Vertex API. It is also accessible via AI Studio and the Antigravity development tool released in November 2025. The company stated that all images created with the new model will carry a SynthID watermark denoting AI-generated content.
The images are interoperable with C2PA Content Credentials, created by an industry body including Adobe, Microsoft, Google, OpenAI, and Meta. Google said the SynthID verification feature, launched in the Gemini app in November, has been used over 20 million times. The original Nano Banana model launched in August 2025, generating millions of images in the Gemini app, particularly in India.
