How much does Flux 2 Klein 4b cost?

Flux 2 Klein 4b is available on the free tier at no token cost — create an API key and start building. Paid plans add higher rate limits.

What can Flux 2 Klein 4b do?

Flux 2 Klein 4b is Bfl.ai's image generation model, accessible through the Api.Airforce API.

Is Flux 2 Klein 4b free to use?

Yes — Flux 2 Klein 4b is on the free tier. You can use it with an Api.Airforce API key at no cost.

How do I use Flux 2 Klein 4b via the API?

Flux 2 Klein 4b is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID flux-2-klein-4b with your Api.Airforce API key.

Who makes Flux 2 Klein 4b?

Flux 2 Klein 4b is Bfl.ai's image generation model, served through the unified Api.Airforce gateway alongside 100+ other models.

Bfl.aiFreeOperational

Flux 2 Klein 4b

API model name: flux-2-klein-4b

Flux 2 Klein 4b is Bfl.ai's image generation model, served on the Api.Airforce unified API. It is available on the free tier at no per-token cost. Access it through the OpenAI-compatible API with one key, alongside 100+ other models on Api.Airforce.

Get an API key View pricing

Pricing

Input / 1M tokens

Free

Output / 1M tokens

Free

Specifications

Provider: Bfl.ai
Type: image generation model

What is Flux 2 Klein 4b used for?

Image generation — marketing visuals, concept art, product shots and illustrations.

Flux 2 Klein 4b — frequently asked questions

How much does Flux 2 Klein 4b cost?: Flux 2 Klein 4b is available on the free tier at no token cost — create an API key and start building. Paid plans add higher rate limits.
What can Flux 2 Klein 4b do?: Flux 2 Klein 4b is Bfl.ai's image generation model, accessible through the Api.Airforce API.
Is Flux 2 Klein 4b free to use?: Yes — Flux 2 Klein 4b is on the free tier. You can use it with an Api.Airforce API key at no cost.
How do I use Flux 2 Klein 4b via the API?: Flux 2 Klein 4b is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID flux-2-klein-4b with your Api.Airforce API key.
Who makes Flux 2 Klein 4b?: Flux 2 Klein 4b is Bfl.ai's image generation model, served through the unified Api.Airforce gateway alongside 100+ other models.

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Use Flux 2 Klein 4b via the API

OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass flux-2-klein-4b as the model.

cURL

curl https://api.airforce/v1/images/generations \
  -H "Authorization: Bearer $AIRFORCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "flux-2-klein-4b",
    "prompt": "a red panda coding"
  }'

Python

from openai import OpenAI
client = OpenAI(base_url="https://api.airforce/v1", api_key="$AIRFORCE_API_KEY")
img = client.images.generate(model="flux-2-klein-4b", prompt="a red panda coding")
print(img.data[0].url)

JavaScript

import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.airforce/v1", apiKey: process.env.AIRFORCE_API_KEY });
const img = await client.images.generate({ model: "flux-2-klein-4b", prompt: "a red panda coding" });
console.log(img.data[0].url);