Google · 131K context
Nano Banana 2 (Gemini 3.1 Flash Image) API
Use Nano Banana 2 (Gemini 3.1 Flash Image) in the Synaps chat or through one OpenAI-compatible API key. Pay per message from a balance you top up with ETH or USDC. No subscription, no card.
Prices include the 20% Synaps fee and update automatically. “List” is what the provider charges.
Call Nano Banana 2 (Gemini 3.1 Flash Image) from code
Synaps speaks the OpenAI Chat Completions format. Point any OpenAI SDK at Synaps and set model to google/gemini-3.1-flash-image.
curl https://www.synaps.chat/api/v1/chat/completions \
-H "Authorization: Bearer $SYNAPS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "google/gemini-3.1-flash-image",
"messages": [{ "role": "user", "content": "Hello!" }]
}'from openai import OpenAI
client = OpenAI(base_url="https://www.synaps.chat/api/v1", api_key="syn_...")
reply = client.chat.completions.create(
model="google/gemini-3.1-flash-image",
messages=[{"role": "user", "content": "Hello!"}],
)
print(reply.choices[0].message.content)Privacy
This model's maker runs it and can read requests under its own policy. Synaps doesn't store your prompts.
Questions
How much does Nano Banana 2 (Gemini 3.1 Flash Image) cost on Synaps?
$0.600 per million input tokens and $3.60 per million output tokens, including the 20% Synaps fee. A typical chat message costs about $0.0027. You only pay for what you use.
Can I pay for Nano Banana 2 (Gemini 3.1 Flash Image) with crypto?
Yes. Top up your Synaps balance with ETH on Robinhood Chain or Base, or USDC on Base, from $1. Each message is deducted from that balance. There is no subscription or card.
Is there a Nano Banana 2 (Gemini 3.1 Flash Image) API?
Yes. Create an API key on Synaps and call google/gemini-3.1-flash-image through the OpenAI-compatible endpoint https://www.synaps.chat/api/v1/chat/completions. Any OpenAI SDK works by changing the base URL.
What can Nano Banana 2 (Gemini 3.1 Flash Image) do?
It accepts image, text and produces image and text, with a context window of 131K tokens. You can attach photos in the chat. Turn on Image mode in the chat to generate pictures.