Overview of Google’s Nano Banana image generation APIs for developers.

What is Nano Banana?

“Nano Banana” is the nickname for Google’s Gemini image generation models:

  • Nano Banana = Gemini 2.5 Flash Image (faster, lower cost)
  • Nano Banana Pro = Gemini 3 Pro Image (higher quality, advanced features)

These are standalone image generation APIs available to developers, separate from NotebookLM’s Video Overview feature.

Documents

DocumentDescription
API Access GuideComplete guide to accessing Nano Banana APIs, including setup, pricing, and capabilities

Quick Start

  1. Visit Google AI Studio
  2. Get API key from left sidebar
  3. Enable billing on Google Cloud project
  4. Use model identifiers:
    • gemini-2.5-flash-image (Nano Banana)
    • gemini-3-pro-image-preview (Nano Banana Pro)

Key Capabilities

  • Text-to-image generation
  • Image editing and enhancement
  • Multi-image composition
  • High-fidelity text rendering (logos, diagrams, posters)
  • Support for 2K and 4K outputs

Pricing

  • Free tier: 500 requests/day for Gemini 2.5 Flash Image
  • Paid: ~$0.15 per 4K generation