Google: Nano Banana (Gemini 2.5 Flash Image)

google/gemini-2.5-flash-image

33KContext Window

33KMax Output

Supported Protocols:max_tokenstemperaturetop_pseedresponse_formatstopstructured_outputs

Normal

Gemini 2.5 Flash Image, a.k.a. "Nano Banana," is now generally available. It is a state of the art image generation model with contextual understanding. It is capable of image generation, edits, and multi-turn conversations. Aspect ratios can be controlled with the [image_config API Parameter](https://openrouter.ai/docs/features/multimodal/image-generation#image-aspect-ratio-configuration)

Capabilities

👁 VisionText GenerationCode GenerationAnalysis & ReasoningReasoning

Technical Specs

Input Modality

Image、Text

Output Modality

Image、Text

Arch

—

Default Temperature

0.7

Default Top_P

Pricing

Pay per use, no monthly fees

Billing Type	Unit	Price
Text Input	—	$0.3000/M tokens
Text Output	—	$2.5000/M tokens
Cache Read	—	$0.0300/M tokens
Cache Write 1h	—	$0.0833/M tokens
Cache Write	—	$0.0833/M tokens
Audio Cache Read	—	$0.1000/M tokens
Image Input	—	< $0.001/张
Audio Input	—	$1.0000/分钟
Web Search	—	$0.0140/次

Quick Start

from openai import OpenAI

client = OpenAI(
    base_url="https://api.uniontoken.ai/v1",
    api_key="YOUR_UNIONTOKEN_API_KEY",
)

response = client.chat.completions.create(
    model="google/gemini-2.5-flash-image",
    messages=[
        {"role": "user", "content": "Hello!"}
    ],
)

print(response.choices[0].message.content)