Nano Banana Pro

by Google DeepMind · released 2025-11

Google's Gemini 3 Pro Image — native 4K stills with state-of-the-art text rendering and 14-image composition.

When should you use Nano Banana Pro?

Use Nano Banana Pro when on-frame text must render legibly (~94% accuracy on quoted text) or when up to 14 references must blend into one composition — posters, infographics, UI mocks and 4K hero stills are the sweet spot. Pick FLUX 2 Pro instead when iteration speed and per-image cost matter more than text rendering or native 4K.

TL;DR — Nano Banana Pro is the model to reach for when a still must hold legible on-frame text or compose up to 14 references — 4K native, 94%+ text accuracy, sub-12s generations.

Specs

Max resolution Native 4K — up to 4096 × 4096
Image composition Up to 14 image inputs blended
Text rendering 94%+ accuracy on on-frame text
Generation time Under 12 seconds at 4K
Modes Text-to-image, multi-image edit, web-search-grounded
Aspect ratios 1:1, 16:9, 9:16, 4:3, 3:4
Access Gemini app, AI Studio, Vertex AI, aggregators (ShortsFast)

Best for

  • • Posters, infographics, and UI mockups where on-frame text must render legibly
  • • Multi-reference composition: up to 14 input images blended into one output
  • • 4K hero stills and reference frames that feed video models downstream

Weak at

  • • Tight, fast iteration loops — sub-12s is fast but FLUX is still snappier per call
  • • Strict photo-realism on extreme close-ups when prompted vaguely
  • • Cost-sensitive bulk runs vs FLUX 2 Pro per-image pricing

Prompt structure

  1. Subject — specific noun phrase with one defining attribute
  2. Composition — shot size + framing + perspective
  3. Lighting — direction + quality + color temperature
  4. On-frame text — exact wording in quotes if any
  5. References — list each attached image and its role
  6. Style — photographic / illustrative reference, one or two anchors

Paste-ready recipes

Poster with legible headline (4K)

                A minimalist poster for a coffee brand. Subject: a single roasted coffee bean lit from one side, casting a long soft shadow on a cream paper background. Composition: centered, 1:1 square, subject occupying lower third. Lighting: hard rim from camera-left, deep shadow on right. On-frame text: top centered, sans-serif, exact wording: "SLOW ROAST 2026". Below in smaller weight: "Single Origin · Ethiopia". Style: 2020s Apple ad, matte print finish.

Note: Quote on-frame text exactly. Nano Banana Pro renders quoted text with ~94% accuracy.

14-image brand composite

                Reference images 1-14: brand_swatch_*.png. Compose: a single hero still that incorporates the dominant color and one geometric motif from each reference, arranged as a vertical poster. Subject: the brand's logotype rendered in 3D, suspended over the composition. Lighting: studio softbox, neutral. On-frame text: exact wording: "FOURTEEN STORIES, ONE BRAND." Style: editorial design.

Note: Reference index 1-14 in the prompt body — Nano Banana Pro binds by reference order.

UI mockup with copy

                A hero screenshot of a video generation app. Centered: a 9:16 video preview frame showing a sunset beach. Above the frame: a single bold headline in exact wording: "Every model. One subscription." Below: a primary button labeled "Try free". Background: deep navy gradient with subtle grain. Lighting: neutral, evenly lit, no glare. Style: clean SaaS landing page, 2026 design language.

Reference frame for video pipeline

                A photorealistic still: a 28-year-old woman in a sunlit kitchen, mid-stride, holding a matte-black mug. Composition: medium shot, 35mm equivalent, shallow depth of field. Lighting: soft window from camera-left, warm 4500K key, cool ambient fill. No on-frame text. Style: documentary photo, slight grain. (Output feeds image-to-video on Veo 3.1 or Seedance 2.0 downstream.)

FAQ

Does Nano Banana Pro really render 4K natively?

Yes — up to 4096 × 4096 in a single pass with no upscale. This is 4× the pixel count of FLUX 1.1 Pro Ultra at 4MP. Posters, infographics, and hero stills that get blown up downstream benefit most from the native 4K.

How accurate is on-frame text rendering?

Roughly 94% on quoted text — far above prior image models. Quote the text exactly in the prompt; do not describe it ("a sign that says hello" gets you garbled letters; `On-frame text: "HELLO"` lands clean).

Nano Banana Pro vs FLUX 2 Pro — which one?

Pick Nano Banana Pro when on-frame text or 4K is non-negotiable, or when you need to blend more than 4-5 references. Pick FLUX 2 Pro when iteration speed and per-image cost matter more than text rendering. Both are 2026-frontier; pick per-job.

Can I use Nano Banana Pro outputs commercially?

Outputs from paid Google surfaces (AI Studio paid tier, Vertex AI, Gemini paid) carry commercial use rights. Aggregator access (e.g., ShortsFast) inherits commercial rights on paid plans.

Primary sources

Use Nano Banana Pro without the per-model subscription

ShortsFast bundles Nano Banana Pro with every other frontier model under one flat $20/mo plan.

Start free See pricing

Last updated 2026-04-27. ShortsFast has no affiliation with Google DeepMind. Specs are compiled from the vendor's public documentation and verified against primary sources on the date above.