Chat with Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Gemini 3.1 Flash Image Preview, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual qual

No signup required — try it as a guest. 30,000 free tokens every day once you sign up.

Provider
Google
Model slug
google/gemini-3.1-flash-image-preview
Typical cost
Around 1,950–4,875 tokens per typical message. 15M Pro tokens buy roughly 3,076–…
Availability
On Faceb.ai · chat + API

About Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Gemini 3.1 Flash Image Preview, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines...

What it's good at

1

131,072-token context window — enough for long documents.

2

Extremely low per-token price compared to frontier models — good for high-volume workloads.

3

Hosted by Google — you can access it here alongside GPT-4o, Claude, Gemini and 100+ more on one plan.

4

Switch to any other model mid-conversation from the picker.

Pricing on Faceb.ai

Around 1,950–4,875 tokens per typical message. 15M Pro tokens buy roughly 3,076–7,692 messages.

Use Nano Banana 2 (Gemini 3.1 Flash Image Preview) from the API

OpenAI-compatible. Same Faceb.ai tokens cover chat and API. Drop-in replacement for the OpenAI SDK.

curl https://api.faceb.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-faceb-YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "google/gemini-3.1-flash-image-preview",
    "messages": [{"role": "user", "content": "Hello!"}],
    "stream": true
  }'
from openai import OpenAI

client = OpenAI(
    base_url="https://api.faceb.ai/v1",
    api_key="sk-faceb-YOUR_KEY",
)

stream = client.chat.completions.create(
    model="google/gemini-3.1-flash-image-preview",
    messages=[{"role": "user", "content": "Hello!"}],
    stream=True,
)
for chunk in stream:
    print(chunk.choices[0].delta.content or "", end="", flush=True)
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.faceb.ai/v1",
  apiKey: "sk-faceb-YOUR_KEY",
});

const stream = await client.chat.completions.create({
  model: "google/gemini-3.1-flash-image-preview",
  messages: [{ role: "user", content: "Hello!" }],
  stream: true,
});
for await (const chunk of stream) {
  process.stdout.write(chunk.choices[0]?.delta?.content || "");
}

Also works for image generation (image-output model slugs return image_url content parts) and web search (add "web_search": true to the payload). Same endpoint, same wallet.

Full API docs → · Get an API key →

Frequently asked — Nano Banana 2 (Gemini 3.1 Flash Image Preview)

What is Nano Banana 2 (Gemini 3.1 Flash Image Preview)?

Nano Banana 2 (Gemini 3.1 Flash Image Preview) is a chat/completion model served by Google and accessed through Faceb.ai. Try it without signing up — guest users get a small pool of session tokens to experiment.

Is Nano Banana 2 (Gemini 3.1 Flash Image Preview) free on Faceb.ai?

You get 30,000 tokens free every day — usually enough for a handful of messages a day on this model. Need more? Pro is $14.99/month for 15M tokens, or top-ups from $5.

What's Nano Banana 2 (Gemini 3.1 Flash Image Preview)'s context window?

131,072 tokens. Paste your source material in, no need to truncate.

Can I call Nano Banana 2 (Gemini 3.1 Flash Image Preview) from the API?

Yes. Any API key from /account/api/ works with model slug `google/gemini-3.1-flash-image-preview`. The OpenAI SDK works with base_url=https://api.faceb.ai/v1.

How does Nano Banana 2 (Gemini 3.1 Flash Image Preview) compare to GPT-4o or Claude?

Depends on the task. Faceb.ai lets you switch models per message — benchmark side-by-side by asking both the same prompt, which is more reliable than abstract comparisons.

How much does Nano Banana 2 (Gemini 3.1 Flash Image Preview) cost per message here?

Around 1,950–4,875 tokens per typical message. 15M Pro tokens buy roughly 3,076–7,692 messages.

Does Faceb.ai train on my Nano Banana 2 (Gemini 3.1 Flash Image Preview) prompts?

No. We contractually request that upstream providers not train on content routed through us. Your chat history lives only on your account.

Is Nano Banana 2 (Gemini 3.1 Flash Image Preview) good for coding?

It depends on the model size and training mix. For serious code work the developer favourites are Claude 3.5 Sonnet and DeepSeek V3; for quick edits, most capable models work fine.

Can I use Nano Banana 2 (Gemini 3.1 Flash Image Preview) on the API with the OpenAI SDK?

Yes — point your SDK at https://api.faceb.ai/v1 and use this model's slug as the model parameter. Everything else works as normal.

Does Nano Banana 2 (Gemini 3.1 Flash Image Preview) support image inputs?

Check the model catalog — multimodal models are marked in the picker. If it accepts images, you can drop screenshots and diagrams straight into the chat.

Can I switch from Nano Banana 2 (Gemini 3.1 Flash Image Preview) to another model mid-chat?

Yes — the picker is always at the top of the chat. Previous context carries over.

Will newer versions of Nano Banana 2 (Gemini 3.1 Flash Image Preview) show up here automatically?

Yes. Our catalog auto-fetches from the upstream aggregator, so provider updates and new versions appear in the picker as soon as they're available.

Or try a different model

Your Faceb.ai tokens work for every model — switch per message, no extra subscriptions.

Ready to chat?

One subscription covers every frontier model — switch between them per message. No extra API keys, no extra bills.

Start chatting with Nano Banana 2 (Gemini 3.1 Flash Image Preview) → Go Pro · $14.99/mo