Gemini 2.5 Flash Image (Nano Banana)

Approved Data Classifications

Description

Gemini 2.5 Flash Image is optimized for image understanding and generation with a balance of price and performance. It uses the speed and cost-effectiveness of Gemini 2.5 Flash to enable fast image generation and editing, and is also known as Nano Banana.

Capabilities

Model	Training Data	Input	Output	Context Length	Cost (per 1 million tokens / per image)
gemini-2.5-flash-image	June 2025	Text, Image	Text, Image	32,768 (in) / 32,768 (out)	$0.30/1M input (text/image) $0.039 per image (1024x1024)

info

• 1M represents 1 Million Tokens
• Image outputs up to 1024x1024 use 1290 output tokens (about $0.039 per image)

Availability

Cloud Provider

Usage

curl

curl -X POST https://api.ai.it.ufl.edu/v1/images/generations \
-H "Content-Type: application/json" \
-H "Authorization: Bearer <API_TOKEN>" \
-d '{
  "model": "gemini-2.5-flash-image",
  "prompt": "A cheerful alligator mascot in UF colors, poster style.",
  "size": "1024x1024"
}'

python

from openai import OpenAI

client = OpenAI(
    api_key="your_api_key",
    base_url="https://api.ai.it.ufl.edu/v1"
)

response = client.images.generate(
    model="gemini-2.5-flash-image",
    prompt="A cheerful alligator mascot in UF colors, poster style.",
    size="1024x1024",
    response_format="url"
)

image_url = response.data[0].url

javascript

import OpenAI from 'openai';

const openai = new OpenAI({
  apiKey: 'your_api_key',
  baseURL: 'https://api.ai.it.ufl.edu/v1'
});

const completion = await openai.images.generate({
    model: "gemini-2.5-flash-image",
    prompt: "A cheerful alligator mascot in UF colors, poster style.",
    size: "1024x1024",
    response_format: "url",
});

image_url = completion.data[0].url;

When to Use

• Fast, cost-efficient image generation at scale
• Iterative image edits and quick concepting
• Multimodal workflows that mix text and images
• High-volume creative production

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References

1. Gemini 2.5 Flash Image (Vertex AI)
   https://cloud.google.com/vertex-ai/generative-ai/docs/models/gemini/2-5-flash-image
2. Gemini API Pricing
   https://ai.google.dev/gemini-api/docs/pricing
3. Nano Banana announcement (Google Cloud Blog)
   https://cloud.google.com/blog/products/ai-machine-learning/now-available-nano-banana-pro-for-enterprise