Nano Banana Pro (Gemini 3 Pro Image Preview)
Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro.
Input per 1M
$2.10
Images per 1M
$126.00
Context
66Ktokens
Per 1M tokens
$2.10 · $126.00
Context
66Ktokens
Supports
- Reads images
- Thinks before it answers
- Makes images
Terminal
curl https://deference.si/v1/chat/completions \
-H "Authorization: Bearer $DEFERENCE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "google/gemini-3-pro-image-preview",
"modalities": ["image", "text"],
"messages": [{ "role": "user", "content": "Say hello in one sentence." }]
}'import os
from openai import OpenAI
client = OpenAI(base_url="https://deference.si/v1", api_key=os.environ["DEFERENCE_API_KEY"])
completion = client.chat.completions.create(
model="google/gemini-3-pro-image-preview",
extra_body={"modalities": ["image", "text"]},
messages=[{"role": "user", "content": "Say hello in one sentence."}],
)
print(completion.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://deference.si/v1", apiKey: process.env.DEFERENCE_API_KEY });
const completion = await client.chat.completions.create({
model: "google/gemini-3-pro-image-preview",
...{ modalities: ["image", "text"] },
messages: [{ role: "user", content: "Say hello in one sentence." }],
});
console.log(completion.choices[0].message.content);Needs an API keyGet one
Pricing and limits
- Cache read$0.21per 1M tokens
- Cache write$0.3938per 1M tokens
- Image output$126.00per 1M image tokens
- Max output32,768tokens
OpenRouter's price plus OpenRouter's 5% platform fee. Deference adds no markup.