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Nano Banana 2

ان پٹ:$0.4/M
آؤٹ پٹ:$2.4/M
جاری کیا گیا:Feb 26, 2026

Core Capabilities Overview: Resolution: Up to 4K (4096×4096), on par with Pro. Reference Image Consistency: Up to 14 reference images (10 objects + 4 characters), maintaining style/character consistency. Extreme Aspect Ratios: New 1:4, 4:1, 1:8, 8:1 ratios added, suitable for long images, posters, and banners. Text Rendering: Advanced text generation, suitable for infographics and marketing poster layouts. Search Enhancement: Integrated Google Search + Image Search. Grounding: Built-in thinking process; complex prompts are reasoned before generation.

نیا
مقبول
تجارتی استعمال

Nano Banana 2 کے لیے Playground

Nano Banana 2 کا Playground دریافت کریں — ماڈلز کو ٹیسٹ کرنے اور حقیقی وقت میں سوالات چلانے کے لیے ایک متحرک ماحول۔ پرامپٹس آزمائیں، پیرامیٹرز ایڈجسٹ کریں، اور فوری طور پر دہرائیں تاکہ ترقی کو تیز کریں اور استعمال کے معاملات کی تصدیق کریں۔

Technical Specifications of Gemini 3.1 Flash Image Preview

ItemGemini 3.1 Flash Image Preview
ProviderGoogle
Model familyGemini 3.1 (Flash tier)
Primary focusFast multimodal generation with image preview
Input typesText, Image
Output typesText, Image (preview generation)
Context windowUp to 1M tokens (Gemini 3.x Flash tier standard)
Latency tierLow-latency, high-throughput
Streaming supportYes
Tool callingYes (Gemini API tools framework)
Version3.1

What is Nano Banana 2

Nano Banana 2 is the popular nickname used by the press and developer community for the newly released Gemini-3.1-Flash-Image model. Google positions it as the “Flash”-tier image engine that brings near-Pro visual fidelity to a much lower latency and cost tier — suitable for high-volume generation, rapid iterative editing, and integrated product workflows across Google services. It inherits Gemini 3.1’s multimodal reasoning and adds image-centric capabilities (legible text in images, multi-image composition, wide aspect ratio support, native 4K).

Main features

  • High-speed, multi-resolution generation: Flash-tier speed with options for 0.5K / 1K / 2K / 4K outputs and new extreme aspect ratios (1:4, 4:1, 1:8, 8:1).
  • Real-time web grounding: Integrates both text and image search results to ground generated content in current web information when “Thinking” or search grounding is enabled. Useful for up-to-date references and factual infographics.
  • Improved text rendering: Better short-text and graphic text rendering (fonts, sizes) than earlier Flash models; still imperfect on long paragraphs/small text.
  • Multi-input editing and multi-turn workflows: Strong support for combining several images as inputs and for iterative edits across turns.

📊 Benchmark Performance — Image Generation & Editing (Elo scores)

CapabilityGemini 3.1 Flash Image (Nano Banana 2)Gemini 2.5 Flash Image (Nano Banana)Gemini 3 Pro Image (Nano Banana Pro)GPT-Image 1.5Seedream 5.0 LiteGrok Imagine Image Pro
Text-to-Image — Overall Preference1079.0 ± 7.01073.0 ± 5.0942.0 ± 6.01021.0 ± 5.01047.0 ± 5.0928.0 ± 8.0
Text-to-Image — Visual Quality1140.0 ± 6.01129.0 ± 6.0929.0 ± 6.01043.0 ± 5.0975.0 ± 5.0759.0 ± 10.0
Text-to-Image — Infographics (Factuality)1114.0 ± 14.01074.0 ± 12.0881.0 ± 13.01102.0 ± 13.0985.0 ± 12.0890.0 ± 22.0
Editing — General1065.0 ± 9.01047.0 ± 9.0913.0 ± 9.01051.0 ± 10.0995.0 ± 8.0937.0 ± 9.0
Editing — Character1056.0 ± 7.01049.0 ± 7.0952.0 ± 7.01050.0 ± 8.01025.0 ± 7.0894.0 ± 8.0
Editing — Creative1023.0 ± 7.01031.0 ± 7.0976.0 ± 7.01004.0 ± 7.01017.0 ± 7.0938.0 ± 7.0
Editing — Object/Environment1029.0 ± 8.01018.0 ± 8.0945.0 ± 8.01042.0 ± 10.0976.0 ± 8.0946.0 ± 9.0
Editing — Multi-Input1037.0 ± 8.01016.0 ± 8.0919.0 ± 9.01056.0 ± 12.01014.0 ± 9.0N/A
Editing — Stylization1045.0 ± 7.01031.0 ± 7.0862.0 ± 8.01045.0 ± 9.0996.0 ± 7.0984.0 ± 7.0

Key takeaways from this benchmark table:

  • Across text-to-image generation and image editing categories, Gemini 3.1 Flash Image consistently leads or matches the highest scores among Flash-tier and many competitive image models.
  • The model shows especially strong results in Visual Quality and Infographic (Factuality) benchmarks—signaling that it excels not only in aesthetic quality but also in rendering structurally accurate content.
  • On Multi-Input editing, Nano Banana 2 also shows robust generalization, with higher scores than its previous Flash generation.

These evaluations are conducted via human side-by-side Elo comparisons on a diverse benchmark suite, reflecting both preference and fidelity across commonly used image generation/editing tasks.

Nano Banana 2 vs Nano Banana vs Nano Banana Pro

ModelPositioningRepresentative benchmark/notes
Gemini 3.1 Flash Image (Nano Banana 2)Flash tier: speed + high visual quality (2K–4K)Overall preference 1079.0 ± 7.0; visual quality 1140 ± 6.0 (internal GenAI-Bench).
Gemini 2.5 Flash Image (Nano Banana)Earlier Flash release (lower fidelity)Slightly lower preference/visual scores vs 3.1.
Gemini 3 Pro Image (Nano Banana Pro)Pro tier: higher perceived fidelity for complex tasks, higher cost/latencyDifferent tradeoffs; some metrics show different relative rankings in specialty tasks.
GPT-Image 1.5 / other commercial modelsCompetitors (open/closed)In Google’s internal benchmarks GPT-Image and others scored below Gemini 3.1 on visual quality and overall preference in the reported eval. Independent third-party comparisons vary.

When to choose Flash Image Preview:

  • Real-time image preview in apps
  • Cost-sensitive large-scale image generation
  • Interactive design assistants

How to access and integrate Nano Banana 2

Step 1: Sign Up for API Key

Log in to cometapi.com. If you are not our user yet, please register first. Sign into your CometAPI console. Get the access credential API key of the interface. Click “Add Token” at the API token in the personal center, get the token key: sk-xxxxx and submit.

Step 2: Send Requests to Nano Banana 2 API

Select the “gemini-3.1-flash-image-preview8” endpoint to send the API request and set the request body. The request method and request body are obtained from our website API doc. Our website also provides Apifox test for your convenience. Replace <YOUR_API_KEY> with your actual CometAPI key from your account. Where to call it:Gemini generates image

Nano Banana 2 supports image editing, image generation, and multi-image workflows. For image editing, you need to upload the image URL. For more parameters, please refer to the documentation.

Step 3: Retrieve and Verify Results

Process the API response to get the generated answer. After processing, the API responds with the task status and output data. You can directly download the image to your local machine in the playground (usually in PNG format). An image URL is generated in the API process; please download it promptly.

اکثر پوچھے جانے والے سوالات

Nano Banana 2 کی قیمتیں

[ماڈل کا نام] کے لیے مسابقتی قیمتوں کو دریافت کریں، جو مختلف بجٹ اور استعمال کی ضروریات کے مطابق ڈیزائن کیا گیا ہے۔ ہمارے لچکدار منصوبے اس بات کو یقینی بناتے ہیں کہ آپ صرف اسی کے لیے ادائیگی کریں جو آپ استعمال کرتے ہیں، جس سے آپ کی ضروریات بڑھنے کے ساتھ ساتھ اسکیل کرنا آسان ہو جاتا ہے۔ دریافت کریں کہ [ماڈل کا نام] کیسے آپ کے پروجیکٹس کو بہتر بنا سکتا ہے جبکہ اخراجات کو قابو میں رکھتا ہے۔

nano-banana-2（image）

variant / aliasPrice
gemini-3.1-flash-image (0.5K)≈ $0.03600
gemini-3.1-flash-image (1K)≈ $0.05360
gemini-3.1-flash-image (2K)≈ $0.08080
gemini-3.1-flash-image (4K)≈ $0.12080
gemini-3.1-flash-image-preview (0.5K)≈ $0.03600
gemini-3.1-flash-image-preview (1K)≈ $0.05360
gemini-3.1-flash-image-preview (2K)≈ $0.08080
gemini-3.1-flash-image-preview (4K)≈ $0.12080

Nano Banana 2 کے لیے نمونہ کوڈ اور API

Nano Banana 2 کے لیے جامع نمونہ کوڈ اور API وسائل تک رسائی حاصل کریں تاکہ آپ کے انضمام کے عمل کو آسان بنایا جا سکے۔ ہماری تفصیلی دستاویزات قدم بہ قدم رہنمائی فراہم کرتی ہیں، جو آپ کو اپنے پروجیکٹس میں Nano Banana 2 کی مکمل صلاحیت سے فائدہ اٹھانے میں مدد کرتی ہیں۔

# Get your CometAPI key from https://api.cometapi.com/console/token
# Export it as: export COMETAPI_KEY="your-key-here"

mkdir -p ./output

curl -s "https://api.cometapi.com/v1beta/models/gemini-3.1-flash-image-preview:generateContent" \
  -H "Authorization: $COMETAPI_KEY" \
  -H 'Content-Type: application/json' \
  -X POST \
  -d '{
    "contents": [
      {
        "role": "user",
        "parts": [
          {
            "text": "A woman leaning on a wooden railing of a traditional Chinese building. She is wearing a blue cheongsam with pink and red floral motifs and a headdress made of colorful flowers, including roses and lilacs. Realistic painting style, focusing on the textural details of the clothing patterns and wooden buildings."
          }
        ]
      }
    ],
    "generationConfig": {
      "responseModalities": ["IMAGE"],
      "imageConfig": {
        "aspectRatio": "9:16"
      }
    }
  }' | python3 -c "
import sys, json, base64
data = json.load(sys.stdin)
parts = data['candidates'][0]['content']['parts']
for part in parts:
    if 'text' in part:
        print(part['text'])
    elif 'inlineData' in part:
        img = base64.b64decode(part['inlineData']['data'])
        with open('./output/gemini-3.1-flash-image-preview.png', 'wb') as f:
            f.write(img)
        print('Image saved to ./output/gemini-3.1-flash-image-preview.png')
"

cURL Code Example

# Get your CometAPI key from https://api.cometapi.com/console/token
# Export it as: export COMETAPI_KEY="your-key-here"

mkdir -p ./output

curl -s "https://api.cometapi.com/v1beta/models/gemini-3.1-flash-image-preview:generateContent" \
  -H "Authorization: $COMETAPI_KEY" \
  -H 'Content-Type: application/json' \
  -X POST \
  -d '{
    "contents": [
      {
        "role": "user",
        "parts": [
          {
            "text": "A woman leaning on a wooden railing of a traditional Chinese building. She is wearing a blue cheongsam with pink and red floral motifs and a headdress made of colorful flowers, including roses and lilacs. Realistic painting style, focusing on the textural details of the clothing patterns and wooden buildings."
          }
        ]
      }
    ],
    "generationConfig": {
      "responseModalities": ["IMAGE"],
      "imageConfig": {
        "aspectRatio": "9:16"
      }
    }
  }' | python3 -c "
import sys, json, base64
data = json.load(sys.stdin)
parts = data['candidates'][0]['content']['parts']
for part in parts:
    if 'text' in part:
        print(part['text'])
    elif 'inlineData' in part:
        img = base64.b64decode(part['inlineData']['data'])
        with open('./output/gemini-3.1-flash-image-preview.png', 'wb') as f:
            f.write(img)
        print('Image saved to ./output/gemini-3.1-flash-image-preview.png')
"

Python Code Example

from google import genai
from google.genai import types
from PIL import Image
import os

# Get your CometAPI key from https://api.cometapi.com/console/token, and paste it here
COMETAPI_KEY = os.environ.get("COMETAPI_KEY") or "<YOUR_COMETAPI_KEY>"
BASE_URL = "https://api.cometapi.com"

client = genai.Client(
    http_options={"api_version": "v1beta", "base_url": BASE_URL},
    api_key=COMETAPI_KEY,
)

prompt = (
    "A woman leaning on a wooden railing of a traditional Chinese building. "
    "She is wearing a blue cheongsam with pink and red floral motifs and a headdress "
    "made of colorful flowers, including roses and lilacs. Realistic painting style, "
    "focusing on the textural details of the clothing patterns and wooden buildings."
)
aspect_ratio = "9:16"  # "1:1","2:3","3:2","3:4","4:3","4:5","5:4","9:16","16:9","21:9"

response = client.models.generate_content(
    model="gemini-3.1-flash-image-preview",
    contents=[prompt],
    config=types.GenerateContentConfig(
        response_modalities=["IMAGE"],
        image_config=types.ImageConfig(aspect_ratio=aspect_ratio),
    ),
)

os.makedirs("./output", exist_ok=True)

for part in response.parts:
    if part.text is not None:
        print(part.text)
    elif part.inline_data is not None:
        image = part.as_image()
        output_path = "./output/gemini-3.1-flash-image-preview.png"
        image.save(output_path)
        print(f"Image saved to {output_path}")

JavaScript Code Example

import fs from "fs";
import path from "path";

// Get your CometAPI key from https://api.cometapi.com/console/token, and paste it here
const api_key = process.env.COMETAPI_KEY || "<YOUR_COMETAPI_KEY>";
const base_url = "https://api.cometapi.com/v1beta";
const model = "gemini-3.1-flash-image-preview";

const prompt =
  "A woman leaning on a wooden railing of a traditional Chinese building. " +
  "She is wearing a blue cheongsam with pink and red floral motifs and a headdress " +
  "made of colorful flowers, including roses and lilacs. Realistic painting style, " +
  "focusing on the textural details of the clothing patterns and wooden buildings.";

const response = await fetch(`${base_url}/models/${model}:generateContent`, {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    Authorization: api_key,
  },
  body: JSON.stringify({
    contents: [
      {
        role: "user",
        parts: [{ text: prompt }],
      },
    ],
    generationConfig: {
      responseModalities: ["IMAGE"],
      imageConfig: {
        aspectRatio: "9:16",
      },
    },
  }),
});

const data = await response.json();

const outputDir = "./output";
if (!fs.existsSync(outputDir)) {
  fs.mkdirSync(outputDir, { recursive: true });
}

for (const candidate of data.candidates) {
  for (const part of candidate.content.parts) {
    if (part.text) {
      console.log(part.text);
    } else if (part.inlineData) {
      const imageBuffer = Buffer.from(part.inlineData.data, "base64");
      const outputPath = path.join(outputDir, "gemini-3.1-flash-image-preview.png");
      fs.writeFileSync(outputPath, imageBuffer);
      console.log(`Image saved to ${outputPath}`);
    }
  }
}

Nano Banana 2 کے ورژن

Nano Banana 2 کے متعدد سنیپ شاٹس کی وجوہات میں ممکنہ عوامل شامل ہوسکتے ہیں جیسے اپ ڈیٹس کے بعد آؤٹ پٹ میں تبدیلیاں جس کی وجہ سے مستقل مزاجی کے لیے پرانے سنیپ شاٹس کی ضرورت ہوتی ہے، ڈویلپرز کو ایڈاپٹیشن اور مائیگریشن کے لیے منتقلی کا وقت فراہم کرنا، اور عالمی یا علاقائی اینڈ پوائنٹس کے مطابق مختلف سنیپ شاٹس کا ہونا تاکہ صارف کے تجربے کو بہتر بنایا جاسکے۔ ورژنز کے درمیان تفصیلی فرق کے لیے براہ کرم سرکاری دستاویزات کا حوالہ دیں۔

Model iddescriptionAvailabilityRequest
gemini-3.1-flash-imageRecommend, Pointing to the latest model✅Gemini generates image
gemini-3.1-flash-image-previewOfficial Preview✅Gemini generates image