---
description: FLUX.2 [klein] is an ultra-fast, distilled image model. It unifies image generation and editing in a single model, delivering state-of-the-art quality enabling interactive workflows, real-time previews, and latency-critical applications.
title: flux-2-klein-4b
image: https://developers.cloudflare.com/og-docs.png
---

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# flux-2-klein-4b

Text-to-Image • Black Forest Labs

Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/workers-ai/models/flux-2-klein-4b/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

`@cf/black-forest-labs/flux-2-klein-4b`

* Cloudflare-hosted
* Partner

FLUX.2 \[klein\] is an ultra-fast, distilled image model. It unifies image generation and editing in a single model, delivering state-of-the-art quality enabling interactive workflows, real-time previews, and latency-critical applications.

| Model Info        |                                                                     |
| ----------------- | ------------------------------------------------------------------- |
| Terms and License | [link ↗](https://bfl.ai/legal/terms-of-service)                     |
| Partner           | Yes                                                                 |
| Unit Pricing      | $0.000059 per input 512x512 tile, $0.000287 per output 512x512 tile |

## Parameters

▶multipart{}

`object`required

image

`string`Generated image as Base64 string.

## API Schemas (Raw)

Input

Output

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