Google DeepMind · Released Feb 26, 2026
Nano Banana 2 Online — Gemini 3.1 Flash Image with Pro Quality at Flash Speed
Nano Banana 2 (gemini-3.1-flash-image-preview) brings Pro-level world knowledge, text rendering, and subject consistency at Flash speed. Generate 4K visuals at any aspect ratio — including ultra-wide 8:1 and tall 1:8 — keep up to 5 characters and 14 objects consistent across a series, and ship in 15 to 40 seconds.
Image Creation
Enter a description or upload a reference image to generate creative images.
512px → 4K
Resolution
all aspect ratios
5 + 14
Subject Consistency
characters + objects
14 ratios
Aspect Ratios
1:1 → 8:1 / 1:8
Flash speed
Pro Quality
15–40s typical
Overview
What is Nano Banana 2?
Nano Banana 2 is Google DeepMind's gemini-3.1-flash-image-preview, released Feb 26, 2026 — the latest state-of-the-art image generation and editing model in the Gemini 3.1 family. The official positioning: Pro capabilities at Flash speed.
Pro Capabilities Meet Flash Speed
Nano Banana Pro (Gemini 3 Pro Image) introduced advanced world knowledge and studio-quality control. Nano Banana 2 brings the same Pro-level intelligence — world knowledge, text rendering, subject consistency, instruction following — at the latency of the Gemini Flash family. Most 1K outputs return in under 20 seconds, 2K in 20-30 seconds, 4K in 30-40 seconds. That makes it the right default for production workflows that previously had to choose between speed or fidelity.
4K at Any Aspect Ratio — Including 8:1 and 1:8
Most 4K-capable models lock 4K to widescreen ratios only. Nano Banana 2 lifts that constraint: production-ready specs span 512px to 4K with full control over aspect ratio. The expanded ratio set adds native 1:4, 4:1, 1:8, and 8:1 alongside standard formats — the formats you need for ultra-wide hero banners, tall mobile splash screens, sidebar ads, and dashboard headers that other models cannot produce directly.
World Knowledge & Subject Consistency
Two Pro-level capabilities define the upgrade: (1) Advanced world knowledge — the model pulls from Gemini's real-world knowledge base, with optional grounding from Google Search and Google Image Search for accurate rendering of specific subjects, infographics, diagrams, and data visualizations. (2) Subject consistency — Nano Banana 2 maintains the resemblance of up to 5 characters and the fidelity of up to 14 objects across a single workflow, enabling storyboards, product catalogs, and brand kits without per-frame fiddling.
API Model ID & Integration
The official Gemini API model ID is gemini-3.1-flash-image-preview. HappyHorse calls it under the hood — sign in above and you get auth, storage, credit refunds on failed runs, and a generator UI tuned for production. For direct API access, see Google AI Studio, Vertex AI, or the Gemini API documentation. The model is also available in Google Antigravity, Flow, and is the default image model in Gemini app.
Nano Banana 2 Features That Set It Apart
Eight capabilities — directly from Google DeepMind's release — that make Gemini 3.1 Flash Image the right default for production banner, ad, and editorial work in 2026.
Pro Capabilities + Flash Speed
Google's official positioning: the world knowledge, text rendering, and subject consistency of Nano Banana Pro, at the latency of Gemini Flash. Most 1K outputs in under 20 seconds.
Advanced World Knowledge
Pulls from Gemini's real-world knowledge base with optional Google Search grounding. Renders specific subjects, infographics, diagrams, and data visualizations more accurately than search-free models.
Precision Text Rendering & Translation
Accurate, legible in-image text for marketing mockups, posters, and greeting cards. Supports translating and localizing text inside an image without rebuilding the design.
Subject Consistency: 5 Characters + 14 Objects
Maintain character resemblance for up to 5 characters and fidelity for up to 14 objects across a single workflow — the official Google specification for storyboard and series work.
Production-Ready Specs: 512px → 4K, Any Ratio
Full control over resolution from 512px to 4K and over 14 aspect ratios. No 4K widescreen-only restriction — the same ratios work at every resolution.
Visual Fidelity Upgrade
Over Nano Banana 1: vibrant lighting, richer textures, sharper details. The quality-to-speed balance that makes Flash usable for shipped work, not just drafts.
Image Search Grounding
Optional grounding from Google Image Search helps the model match real reference imagery — useful when you need brand visuals to align with public web references.
Extreme Aspect Ratios (1:4 / 4:1 / 1:8 / 8:1)
Generate ultra-wide hero banners (8:1), tall mobile splashes (1:8), and sidebar/skyscraper ads (1:4 / 4:1) directly — formats other models cannot produce without crop-and-stretch.
What's new
Google Search Grounding & Translation — Real Facts in Generated Images
Nano Banana 2 can optionally consult Google Search and Google Image Search during generation, and can translate or localize text inside an image while preserving layout. Two Pro-level capabilities that change what AI image models can actually be used for.
Editorial & News Visuals With Real Facts
Generate cover art for current-event articles where the model knows what the subject actually looks like via Google Search grounding. Useful for blog headers, podcast episode art, and newsletter visuals where 'inspired by reality' matters more than pure imagination.
Data Infographics With Current Numbers
Ask for an infographic on 'global EV adoption 2026' and Nano Banana 2 can pull live numbers via search grounding rather than fabricating plausible-looking but wrong percentages. The advanced world knowledge handles labels, arrows, and structured information that broke earlier diffusion models.
Translate & Localize Text Inside Images
Upload a poster in English; ask Nano Banana 2 to render the same poster in Japanese, Arabic, or Korean — keeping the original layout, typography style, and visual hierarchy. Earlier models would re-generate the entire visual; Nano Banana 2 treats the text layer as a translatable element.
Brand Scenes Matching Real Reference
Generate product visuals or brand scenes that visually align with real existing imagery via Google Image Search grounding — useful when your brand has well-known visual language already on the public web. Today the toggle lives in the API; we keep it off in this generator UI for predictable cost and behavior.
How to Use Nano Banana 2 Online — 4 Steps
Generate your first image in under 1 minute. No API key, no setup, no install.
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Step 1: Step 1: Write a Prompt or Upload References
Type a clear, multi-part prompt. For editing or character consistency, upload up to 14 reference images (JPEG, PNG, WebP, GIF, 20MB each). Inside the generated output, the model maintains 5-character and 14-object consistency.
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Step 2: Step 2: Pick Aspect Ratio & Resolution
Pick from 14 aspect ratios including extreme 1:8 / 8:1. Resolution: 1K (8 cr) for drafts, 2K (12 cr, default), 4K (16 cr) for print. Every ratio works at every resolution — no widescreen-only restriction.
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Step 3: Step 3: Generate (15–40s)
Click Generate. Nano Banana 2 is Flash-tier — most images return in 15-40 seconds. Failed runs auto-refund credits. Generate up to 4 variations in parallel.
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Step 4: Step 4: Download or Iterate
Download as PNG, retry with a new seed, or feed the result back as a reference image. Iterate edits without paying full re-generation cost.
Nano Banana 2 Use Cases
Eight workflows where Nano Banana 2's speed, 4K-any-ratio output, world knowledge, and 5-character consistency ship production-ready visuals.
Ultra-Wide Hero Banners (8:1)
Generate 8:1 web banners, dashboard headers, and promotional billboards directly at 4K — most models cannot produce these without crop-and-stretch tricks.
Decision guide
Nano Banana 2 vs GPT Image 2 — Which Should You Pick?
HappyHorse hosts both flagship 2026 image models and they share the same credit balance. Here's the practical decision tree based on what each model is officially built for.
Pick Nano Banana 2 when…
(1) You need ultra-wide 8:1 banners or tall 1:8 splashes — GPT Image 2's 4K mode is widescreen-only, Nano Banana 2 has no such restriction. (2) You're iterating fast — Flash-tier latency means 15-40s per image versus GPT Image 2's 30-60s. (3) You need real-world facts in the image — Google Search grounding pulls live information that GPT Image 2 does not. (4) You're storyboarding 5 consistent characters across frames. (5) You want lower-cost iteration drafts (1K = 8 credits, often enough to lock composition before paying for 4K).
Pick GPT Image 2 when…
(1) Multilingual text rendering is the deciding factor — GPT Image 2 covers 30+ languages with the strongest typography fidelity. (2) The prompt is genuinely complex (magazine spread with myth-versus-fact callouts, multi-element editorial layout) — GPT Image 2's agentic reasoning plans the composition before rendering. (3) You need 16 reference images for image-to-image — Nano Banana 2 caps at 14. (4) Production posters and brand kits where multilingual headline accuracy matters more than speed.
How to use both on HappyHorse
One account, one credit balance. Use Nano Banana 2 for high-volume production, banners, storyboards, and grounded editorial. Switch to GPT Image 2 when you need multilingual headlines or maximum reasoning depth on a single hero asset. The two generators live at /nano-banana-2 and /gpt-image-2 — bookmark whichever you use more, and switch in one click via the header NEW menu.
Nano Banana 2 Example Gallery
Style examples curated for Nano Banana 2 — click any image to load the prompt into the generator above.
Model comparison
Nano Banana 2 vs GPT Image 2 vs Nano Banana Pro vs Midjourney v7 vs DALL-E 3 vs Flux Kontext
Objective comparison of leading AI image models — based on public specs and Google DeepMind's release notes as of April 2026.
| Capability | Nano Banana 2 | GPT Image 2 | Nano Banana Pro | Midjourney v7 | DALL-E 3 | Flux Kontext |
|---|---|---|---|---|---|---|
| Speed (1K typical) | 15–20s | 30–60s | 45–90s | 30–60s | 10–15s | 20–40s |
| Max resolution | 4K (any ratio) | 4K (widescreen only) | 4K (high fidelity) | 2048² | 1024² | 2048² |
| Extreme ratios (1:8 / 8:1) | Yes | No | Standard only | No | No | No |
| Reference images (input) | Up to 14 | Up to 16 | Up to 14 | 1 (cref) | 0 | Up to 4 |
| Subject consistency (output) | 5 chars + 14 objects | Strong | Strong multi-element | Limited | Limited | Limited |
| World knowledge | Advanced (Pro-level) | Strong reasoning | Deepest reasoning | None | Limited | None |
| Google Search grounding | Yes | No | Yes | No | No | No |
| In-image text translation | Yes | Limited | Yes | No | No | No |
| Multilingual text rendering | EN / ZH / JA strong | 30+ languages | 30+ languages | Garbled | EN only | EN-leaning |
| Image editing | Yes | Yes | Yes | No | Limited (inpaint) | Yes (kontext) |
| Free tier | Free credits | Free credits | Limited | Paid only | Paid only | Paid only |
| Best for | Banners, ads, storyboards, grounded editorial | Multilingual posters, brand kits | High-stakes single shots | Aesthetic art | Quick illustrations | Iterative inpaint edits |
Comparison based on Google DeepMind's Feb 26, 2026 release post and publicly available specs as of April 2026. Nano Banana Pro reflects Gemini 3 Pro Image. Pricing varies by platform.
Nano Banana 2 Prompt Templates — 20 Production-Tested Prompts
Twenty production-tested prompts for Gemini 3.1 Flash Image. Click 'Random' or any template to load it into the generator above and tweak as you like.
Ultra-Wide Hero Banner (8:1)
Misty Pacific coastline at golden hour, distant lighthouse, soft fog, cinematic color grading, ultra-wide hero banner, 4K, 8:1
Tall Mobile Splash (1:8)
Vertical lifestyle shot of a hiker on a mountain ridge at sunrise, mist below, deep depth, ultra-tall mobile splash composition, 4K, 1:8
Multi-Character Storyboard Frame
Same five characters seated around a campfire at dusk: a redhead in a denim jacket, an Asian man with glasses, a bald engineer in coveralls, a woman in a yellow raincoat, and a teenager with a skateboard — keep faces consistent, 16:9
Cinematic Movie Poster
A dramatic sci-fi movie poster, lone astronaut on alien planet, twin moons, lens flare, cinematic color grading, 4K
Product on Marble
Luxury perfume bottle on white marble surface, soft studio lighting from left, minimal shadow, photorealistic 4K commercial photography, white background
Brand Logo Concept
Minimalist logo for a fintech startup 'Nexus', abstract N letterform made of connected nodes, dark background, electric blue accent, vector-style clean lines
Tech Infographic (grounded)
Flat design infographic explaining blockchain in 5 steps, icons for each step, connecting arrows, text labels, blue and white color scheme, modern typography — use real-world facts
Sidebar Skyscraper Ad (1:4)
Vertical banner ad for a productivity app, 'Focus Mode' headline, gradient purple to blue background, subtle product UI mockup, 1:4
Anime Character
Anime-style teenage mage, long silver hair, deep blue robes with gold trim, purple magical aura, white background, detailed cel shading
Architecture Visualization
Minimalist Scandinavian house in winter, snow-covered pines, warm window light, blue hour photography, photorealistic 4K, 16:9
Food Photography
Overhead flat-lay of Japanese ramen bowl, perfectly arranged toppings, steaming, dark wooden background, professional food photography lighting, 4K
Mobile App Dashboard
Modern fintech mobile app home screen, dark mode, account balance, recent transactions, chart visualization, clean typography, status bar included
Translated Poster (EN → JA)
Event poster with bold English title 'DESIGN WEEK 2026', then re-render the same poster with the title translated to Japanese 'デザインウィーク 2026' — keep layout, color, and typography style identical
Book Cover Design
Psychological thriller novel cover, silhouette of woman in broken mirror fragments, blood red tones, moody, title space at top, author name at bottom
Portrait Photography Style
Studio portrait of a business executive, professional attire, confident expression, soft bokeh background, warm directional lighting, LinkedIn profile photo style, 2K
Fantasy Landscape
Enchanted forest at night with bioluminescent mushrooms, fireflies, ancient stone path, moonbeams through canopy, Studio Ghibli inspired, 4K
E-commerce Product Grid
4-product grid layout for a skincare brand, each product on clean white background, consistent lighting and shadow style, minimalist aesthetic, web-ready
Ultra-Wide Newsletter Header
Newsletter header for a travel magazine, tropical beach at sunrise, brand colors teal and coral, 'ESCAPE' clean serif, 8:1 ultra-wide
Wedding Invitation
Elegant wedding invitation, watercolor floral border in blush and sage, calligraphy-style text 'Sarah & James — June 14 2026', cream background, 4:3
Cyberpunk Portrait
Cyberpunk warrior portrait, half human half machine, circuit board tattoos, neon city reflected in chrome visor, hyper-detailed digital art, 1:1 square
How to Get Better Results from Nano Banana 2
Six prompt-engineering habits that consistently improve output quality on Gemini 3.1 Flash Image.
Lead with subject, finish with style
State the subject and composition first ('vertical portrait of a hiker on a ridge'), then style ('golden hour cinematic, lens flare'). Flash-tier models reward concrete subject anchoring.
Use extreme ratios when they fit
If you need an ultra-wide banner, ask for 8:1 directly — do not generate 16:9 and crop. Native ratio gives better composition.
Stay within the 5-character / 14-object limit
For storyboards or multi-element scenes, name up to 5 distinct characters and 14 distinct objects in your prompt — the official Google subject-consistency cap. Beyond that, the model starts blending identities.
1K is the right default for drafts
8 credits for 1K is half of 4K. Iterate at 1K to lock the composition, then re-render the winning seed at 2K or 4K.
Generate in pairs to compare
Output Number = 2 gives variant comparison without doubling editing time. Pick the winner, then refine in a second pass.
Iterate via image editing, not full re-generation
Once you have a draft, upload it as reference and ask for incremental edits ('change background to forests', 'remove the sign', 'translate this title to Japanese'). Faster and more controllable.
Nano Banana 2 FAQ — Free Tier, Pro vs 2, Model Name & More
Answers to the most frequently asked questions about Nano Banana 2 (Google Gemini 3.1 Flash Image) on HappyHorse.
Start Generating with Nano Banana 2
Join HappyHorse to access Google DeepMind's Gemini 3.1 Flash Image — Pro-level quality at Flash speed, 4K at any ratio, 5-character consistency, Google Search grounding. Free credits on signup.