Nano Banana 2 Text-to-Image
テキストから画像

Nano Banana 2 Text-to-Image API by Google

google/nano-banana-2/text-to-image
Text-to-image

Google's lightweight yet powerful AI image generation model, built for creators who need fast, high-quality visuals from simple text prompts.

Nano Banana 2 — プロ品質をFlashスピードで

V2

Gemini 3.1 Flash Image としても知られています

Google DeepMindの最新画像モデルは、Nano Banana Proの高度な機能とGemini Flashのスピードを融合し、3-5倍高速な生成、最大4K解像度、1つのワークフローで最大5キャラクターの一貫性を実現します。

次世代画像生成
  • 最大4K解像度出力(512px / 1K / 2K / 4K ティア)
  • 21:9、1:4、8:1など10+のアスペクト比に対応
  • 画像内の正確で読みやすいテキストレンダリング
  • Flashスピードでほぼプロレベルの品質(約95%)
インテリジェント編集と一貫性
  • シーン間で最大5キャラクターのキャラクター一貫性
  • 1つのワークフローで最大14オブジェクトの忠実度
  • 自然言語による的確な編集(削除、置換、ポーズ変更)
  • マルチ画像ブレンディングとシームレスな合成

Nano Banana 2 の新機能

Proより3-5倍高速

Gemini 3.1 Flashアーキテクチャをベースに構築されたNano Banana 2は、標準画像を4-8秒で生成します。Nano Banana Proの10-20秒と比較してください。

画像検索グラウンディング

NB2の際立った機能 — 生成時にGoogle検索を通じて実世界の参考画像を取得し、ランドマーク、著名人、ブランドロゴの精度を大幅に向上させます。

正確なテキストレンダリング

マーケティングモックアップ、グリーティングカード、ローカライズコンテンツ向けに正確で読みやすいテキストを生成。画像内のテキストの翻訳やローカライズも可能です。

マルチキャラクター一貫性

シーン間で最大5キャラクターと14オブジェクトの視覚的一貫性を維持 — ストーリーボード、漫画、マーケティングキャンペーンに最適です。

Prompt Examples & Templates

Explore curated prompt templates showcasing Nano Banana 2's key capabilities — text rendering, character consistency, search grounding, and 4K output.

Marketing Mockup with Text
Text Rendering

Marketing Mockup with Text

Generate marketing visuals with accurate, legible text — one of NB2's standout improvements
Prompt

A minimalist coffee shop promotional poster with the text 'MORNING BREW — Fresh Roasted Daily' in elegant serif font, warm earth tones, steam rising from a ceramic cup, clean layout with plenty of whitespace

Multi-Scene Character
Character Consistency

Multi-Scene Character

Maintain character consistency across multiple scenes — supports up to 5 characters per workflow
Prompt

A young woman with short red hair and freckles, wearing a green jacket, standing in a rainy Tokyo street at night with neon reflections on wet pavement, cinematic lighting, photorealistic

Person to Action Figure
Photo to Action Figure

Person to Action Figure

Transform people from photos into collectible action figures with custom packaging
Prompt

Transform the person in the photo into an action figure, styled after [CHARACTER_NAME] from [SOURCE / CONTEXT]. Next to the figure, display the accessories including [ITEM_1], [ITEM_2], and [ITEM_3]. On the top of the toy box, write "[BOX_LABEL_TOP]", and underneath it, "[BOX_LABEL_BOTTOM]". Place the box in a [BACKGROUND_SETTING] environment.

Real-World Reference Generation
Search Grounding

Real-World Reference Generation

Leverage Image Search Grounding to generate accurate real-world subjects like landmarks and brands
Prompt

A photorealistic aerial view of the Eiffel Tower at golden hour, with the Seine River winding through Paris below, warm sunset light casting long shadows, high detail, 4K resolution

Product Design Render
Product Photography

Product Design Render

Create professional product photography with precise control over lighting and composition
Prompt

A frosted glass perfume bottle with a marble cap on a white marble surface, soft studio lighting from the left, subtle reflections, minimalist luxury aesthetic, product photography style

Artistic Style Transformation
Style Transfer

Artistic Style Transformation

Apply diverse artistic styles while maintaining subject integrity
Prompt

Transform this photo into Studio Ghibli animation style, keeping the same composition and subjects, lush watercolor backgrounds, soft diffused lighting, whimsical atmosphere

Ultra High Resolution Scene
4K Output

Ultra High Resolution Scene

Generate detailed scenes at up to 4K resolution with rich textures
Prompt

A cozy Japanese ramen shop interior at night, steam rising from bowls, warm amber lighting, detailed wooden counter with various condiments, a chef working in the background, 4K, ultra detailed

ユースケース

🎬
ストーリーボードと漫画
📸
商品写真撮影
📊
マーケティングモックアップ
📱
ソーシャルメディアコンテンツ
🔤
テキストオーバーレイデザイン
👤
キャラクターデザイン
写真編集とレタッチ
🎨
ブランドビジュアルコンテンツ

なぜNano Banana 2を選ぶのか?

Flashスピード

Nano Banana Proより3-5倍高速、標準生成時間は4-8秒
🎯

ほぼプロ品質

ほとんどのシナリオでProの画像品質の約95%を達成
💰

コスト効率

Nano Banana Proの約半分のコスト — 高品質なAI画像生成をより身近に

技術仕様

アーキテクチャ:Gemini 3.1 Flash (GEMPIX2)
解像度サポート:512pxから4K(512px / 1K / 2K / 4K ティア)
アスペクト比:1:1, 4:3, 3:4, 2:3, 3:2, 16:9, 9:16, 1:4, 4:1, 8:1, 21:9
一貫性:ワークフローごとに最大5キャラクター + 14オブジェクト
コンテンツ安全性:SynthID透かし、C2PA標準対応
APIアクセス:Gemini API, Vertex AI, AI Studio, Gemini CLI

Nano Banana 2 を体験する

Flashスピードのプロレベル画像生成 — キャラクター一貫性、テキストレンダリング、4K解像度サポートで美しいビジュアルを作成。

無料クレジットで開始
即座にAPIアクセス
🌐セットアップ不要

Google Nano Banana 2 Text-to-Image

Nano Banana 2 Text-to-Image (Gemini 3.1 Flash Image) is Google’s lightweight yet powerful AI image generation model, built for creators who need fast, high-quality visuals from simple text prompts. It transforms words into expressive, realistic images with remarkable clarity, composition, and style diversity — all within seconds.

Why Choose This?

  • Fast generation Optimized for speed while maintaining high visual quality.

  • Multi-resolution support Output in 1K, 2K, or 4K resolution based on your needs.

  • Flexible aspect ratios Multiple options including 1:1, 3:2, 2:3, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, and 21:9.

  • Cinematic quality Excels at photorealistic scenes with atmospheric lighting and anamorphic lens effects.

  • Prompt Enhancer Built-in tool to automatically improve your descriptions.

  • Format choice Export in PNG or JPEG format.

Parameters

ParameterRequiredDescription
promptYesText description of the desired image
aspect_ratioNoAspect ratio: 1:1, 3:2, 2:3, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9
resolutionNoOutput resolution: 1k (default), 2k, 4k
output_formatNoOutput format: png (default), jpeg

How to Use

  1. Write your prompt — describe the image in detail, including style, lighting, and composition.
  2. Choose aspect ratio (optional) — select a preset or leave empty for default.
  3. Select resolution — choose 1K, 2K, or 4K based on your needs.
  4. Choose output format — PNG for transparency support, JPEG for smaller file size.
  5. Use Prompt Enhancer (optional) — click to automatically refine your description.
  6. Run — submit and download your generated image.

Pricing

ResolutionCost
1k$0.08
2k$0.12
4k$0.16

Best Use Cases

  • Cinematic Imagery — Generate atmospheric scenes with anamorphic lens effects and film-like quality.
  • Character Portraits — Create detailed character illustrations with specific attributes.
  • Social Media Content — Produce eye-catching visuals for various platforms with flexible aspect ratios.
  • Marketing & Ads — Generate professional images for campaigns and promotions.
  • Concept Art — Visualize creative ideas with photorealistic rendering.

Pro Tips

  • Use cinematic language like "anamorphic lens look," "neon signs reflected in puddles," or "rainy Tokyo street at night" for atmospheric results.
  • Be specific about character attributes (hair color, clothing, accessories) for consistent results.
  • Match aspect ratio to your target platform: 9:16 for Stories/Reels, 16:9 for banners, 1:1 for feeds.
  • Try the Prompt Enhancer to automatically improve your descriptions.
  • 2K offers the best value — same price as 1K with higher resolution.

Notes

  • Prompt is the only required field.
  • If aspect_ratio is not selected, the model uses a default ratio.
  • 4K resolution costs 2× the standard rate.
  • Ensure your prompts comply with Google's Safety Guidelines.

300以上のモデルから始める、

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