What is the maximum prompt length for Nano Banana Pro?

The model accepts up to 1M input tokens, but practical limits are much lower. Keep prompts under 300 words for best results. Longer prompts cause the model to lose focus on key elements and may get truncated.

Why does my character's face keep changing?

Two common causes: missing identity lock phrase, or making too many changes at once. Always start your prompt with "Keep the facial features exactly consistent" and follow the one-change-at-a-time rule. If drift occurs after multiple edits, reset to your original reference image.

Can I use multiple reference images?

Yes, up to 14 total images. For human characters, limit to 5 references for best consistency. When using multiple images, explicitly assign roles: "Image 1 = face reference, Image 2 = pose reference, Image 3 = style reference." Without role assignment, the model may combine features unpredictably.

How do I avoid the plastic/airbrushed skin look?

Add explicit texture instructions to your prompt: "Render natural skin texture with visible pores, NOT airbrushed. Include subtle skin variations and imperfections. Add realistic catchlights in eyes." The model defaults to beautified output unless you specify otherwise.

What's the difference between Nano Banana Pro and Gemini 3 Pro Image?

They're the same model. "Nano Banana Pro" is fal.ai's commercial name for Google's Gemini 3 Pro Image (model ID: gemini-3-pro-image-preview). fal.ai provides the API infrastructure; Google provides the underlying model.

Nano Banana Pro: Complete Prompt Engineering Guide 2026

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Nano Banana Pro: Complete Prompt Engineering Guide 2026 | AI Deck