Google launches Nano Banana 2 model with faster image generation

Source: TechCrunch

Google today announced the latest version of its popular image‑generation model, Nano Banana 2 (technically Gemini 3.1 Flash Image). The new model can create more realistic images than its predecessor and will become the default in the Gemini app for Fast, Thinking, and Pro modes.

Background

• Nano Banana was first released in August 2025, quickly gaining traction as users generated millions of images in the Gemini app, especially in countries like India.
• In November 2025, Nano Banana Pro launched, offering higher‑detail and higher‑quality image generation.

New Features of Nano Banana 2

• Retains many high‑fidelity characteristics of the Pro model while delivering faster generation.
• Supports resolutions from 512 px up to 4K and multiple aspect ratios.
• Maintains character consistency for up to five characters and fidelity for up to 14 objects in a single workflow, improving storytelling capabilities.
• Handles complex, nuanced prompts with more vibrant lighting, richer textures, and sharper detail.

Image Credits: Google

Image Credits: Google

Availability and Integration

• Default model for image generation across all Gemini app modes.
• Set as the default model in Google’s video‑editing tool Flow.
• Powers Google Search results via Google Lens and AI Mode in 141 countries on both desktop and mobile.
• Subscribers to Google AI Pro and Ultra plans can still access Nano Banana Pro for specialized tasks via the three‑dot menu.
• For developers, Nano Banana 2 is available in preview through:
  • Gemini API
  • Gemini CLI
  • Vertex API
  • AI Studio
  • The development tool Antigravity (released November 2025)

Watermark and Content Credentials

• All images generated with Nano Banana 2 include a SynthID watermark, Google’s marker for AI‑generated content.
• Images are interoperable with C2PA Content Credentials, an industry standard developed by Adobe, Microsoft, Google, OpenAI, Meta, and others.
• Since the SynthID verification launch in the Gemini app (November 2025), the watermark has been used over 20 million times.