Nano Banana (Gemini 2.5 Flash Image)
VerifiedGoogle's fast multimodal model for image and text tasks.
About Nano Banana (Gemini 2.5 Flash Image)
Designed around Google's Gemini architecture, the model combines image and text modalities in a single system. It remains proprietary with no open weights released. The 32k context supports extended multimodal conversations without parameter details disclosed.
Strengths center on efficient handling of visual content alongside textual prompts. It suits developers needing quick image-related outputs in production settings. Typical usage includes content creation, image description, and iterative visual editing tasks.
Capabilities
How Nano Banana (Gemini 2.5 Flash Image) compares
Nano Banana (Gemini 2.5 Flash Image) (striped bar) vs other image models on intelligence, speed and price.
Price
USD per 1M output tokens · Lower is better · Nano Banana (Gemini 2.5 Flash Image) ranks #2 of 6
Sources: Artificial Analysis (intelligence, speed) · OpenRouter (price).
Best for
Fast Visual Prototyping
The model quickly turns detailed text prompts into image variations, helping designers and marketers explore concepts during early project stages.
Long-Context Image Analysis
Its 32768-token window supports reviewing extended documents paired with multiple images for tasks like report summarization or visual data extraction.
Conversational Image Refinement
Users can iteratively edit generated images through ongoing dialogue while staying within the same context session for consistent results.
Strengths & limitations
Strengths
- +Optimized for speed on image tasks
- +Strong native vision capabilities
- +Efficient handling of combined image-text inputs
- +Practical context window for multimodal work
Limitations
- –Moderate context length compared to larger models
- –Prioritizes speed over deepest reasoning
- –Image-focused variant may trade off some text-only performance
Cost calculator
Estimate what Nano Banana (Gemini 2.5 Flash Image) would cost for your usage.
Based on Nano Banana (Gemini 2.5 Flash Image)'s $0.30/1M input · $2.50/1M output. Estimate only — actual cost varies by provider and caching.
Quick start
OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. Only the model slug changes between models.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: process.env.OPENROUTER_API_KEY,
});
const completion = await client.chat.completions.create({
model: "google/gemini-2.5-flash-image",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(completion.choices[0].message.content);Model slug: google/gemini-2.5-flash-image
Editor's verdict
Nano Banana (Gemini 2.5 Flash Image) is Google's proprietary image models with a 33K-token context window.
At $2.50 per 1M output tokens, it is mid-priced for its class.
It is available through Google's API and aggregators like OpenRouter.
Best suited to optimized for speed on image tasks and strong native vision capabilities.
Frequently asked questions
Access follows Google AI platform usage-based rates that vary by volume and subscription tier.
User reviews
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