Nano Banana models (built on the Gemini 3 family) are advanced image generation and editing models that use deep reasoning to understand your prompt before generating a pixel.
Core Capabilities at a Glance
Resolution & Ratio: Up to 4K resolution. Supports custom aspect ratios (16:9, 9:16, 21:9, 1:1, and more).
Multimodal Input: Mix up to 14 reference images alongside text/PDF documents (up to 131k tokens for Nano Banana 2).
Real-time Data: Connected to web search for generating images based on live information (e.g., current weather, live data).
Safety: Built-in SynthID watermarking and C2PA Content Credentials.
The 5 Master Prompt Formulas
Stop relying on random keywords. Start your prompt with a strong verb that tells the model the primary operation, then follow one of these structural formulas:
1. From Scratch (Text-to-Image)
When you have a blank canvas, you must act as the director.
Formula: [Subject] + [Action] + [Location/Context] + [Composition] + [Style]
Example: “A striking fashion model wearing a tailored brown dress (Subject) posing with a confident stance (Action) against a deep cherry red studio backdrop (Context). Medium-full shot, center-framed (Composition). Fashion magazine editorial style, shot on medium-format film, pronounced grain (Style).”
2. With References (Multimodal)
Best for maintaining character consistency or placing a specific product into a new scene.
Formula: [Reference Images] + [Relationship Instruction] + [New Scenario]
Example: “[Attach napkin sketch + fabric sample] Using the attached sketch as the structure and the fabric sample as the texture, transform this into a high-fidelity 3D armchair. Place it in a sun-drenched, minimalist living room.”
3. Image Editing & Inpainting
Focus heavily on what is changing versus what is staying the same.
Semantic Masking: Tell it exactly what to touch. “Remove the man from the photo, keep the background completely unchanged.”
Style Transfer: Upload a photo and apply a style. “Recreate the exact layout of this modern city street photo, but as a Van Gogh-style oil painting.”
4. Real-Time Data Visualization
Because Nano Banana can search the web, you can prompt it to react to live conditions.
Formula: [Search Request] + [Analytical Task] + [Visual Translation]
Example: “Search for the current weather in San Francisco. Use this data to modify the scene (if raining, make it grey and wet). Visualize this weather inside a miniature city-in-a-cup concept.”
5. Typography & Text Rendering
Nano Banana 2 excels at rendering sharp text in over 10 languages.
Use Quotes: Always enclose exact text in quotes (e.g., “URBAN EXPLORER”).
Name the Font: Specify “bold sans-serif” or “Century Gothic”.
The Text-First Hack: Have a conversation to finalize your copy first, then ask it to generate the image containing that text.
🎬 How to Prompt Like a Creative Director
To move from “good” to “breathtaking,” use specific studio terminology.
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