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Free FLUX.2 [klein] API on Cloudflare Workers AI

Get high-speed free access to flux-2-klein on Cloudflare's global edge network.

Updated 6/9/2026Provider trust 99/1002 code examples

About the Model

Why choose FLUX.2 [klein]?

If you need cinematic quality AI image generation in seconds, FLUX.2 [klein] is the current industrial standard. It maintains rich detail while significantly reducing inference overhead.

View all free providers for FLUX.2 [klein]

How to Access for Free (via Cloudflare Workers AI)

Cloudflare 免费政策

Cloudflare Workers AI 为所有免费账户提供每天 10,000 Neurons 的免费额度。这一额度足够支撑每天上百次的文本生成、数十张高质量生图或多段长音频转录。

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Pick a model, paste your own free key, and run. Your key is sent once to call the provider and never stored on our servers.

Code Examples

curl

curl https://api.cloudflare.com/client/v4/accounts/$CF_ACCOUNT_ID/ai/run/@cf/black-forest-labs/flux-2-klein-9b \
  -H "Authorization: Bearer $CF_API_TOKEN" \
  -d '{"prompt":"a cozy cabin in a snowy forest, warm light"}'

python

import os, base64, requests

account = os.environ["CF_ACCOUNT_ID"]
token = os.environ["CF_API_TOKEN"]

resp = requests.post(
    f"https://api.cloudflare.com/client/v4/accounts/{account}/ai/run/@cf/black-forest-labs/flux-2-klein-9b",
    headers={"Authorization": f"Bearer {token}"},
    json={"prompt": "a cozy cabin in a snowy forest, warm light"},
)
image_b64 = resp.json()["result"]["image"]
with open("output.png", "wb") as f:
    f.write(base64.b64decode(image_b64))