--- title: Flux Klien 9B API | Text to Image | ModelsLab description: Flux Klein 9B is a powerful AI text-to-image & image-to-image model that transforms existing images using text prompts. url: https://modelslab.com/models/modelslab/flux-klien-9b/api.md canonical: https://modelslab.com/models/modelslab/flux-klien-9b/api.md type: product component: Playground/Endpoint/Index generated_at: 2026-05-11T07:02:26.263984Z --- [![Flux Klien 9B thumbnail](https://assets.modelslab.ai/api-logos/01KPMZY676ZM0Z7YJWBM9C78QP.png)](https://modelslab.com/models/modelslab)Flux Klien 9B --- [by Modelslab](https://modelslab.com/models/modelslab)A distilled version of Flux Klien 9B that matches or exceeds leading competitors with only 8 NFEs (Number of Function Evaluations) `flux-klein` Open Source Model [Unlimited Usage](https://modelslab.com/pricing) [LLMs.txt](https://modelslab.com/models/modelslab/flux-klein/llms.txt) [Learn more](https://modelslab.com/flux-klien-9b) Endpoint:Select Endpoint [API Playground](/models/modelslab/flux-klien-9b) [API Documentation](/models/modelslab/flux-klien-9b/api)Vibe CodeRelated ModelsDeveloper SupportModel Specs Input --- Prompt A highly detailed, ultra-realistic scene inside a modern McDonald’s restaurant. At the counter stands a friendly anthropomorphic creature resembling a furry monster or gentle beast. The creature has thick golden-brown fur, expressive round eyes, a wide flat nose, and a soft, friendly facial expression. Advanced Settings Customize your input with more control. 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Model](https://modelslab.com/models/modelslab/object_remover) About Flux Klien 9B --- Flux Klien 9B is a text to image AI model available on ModelsLab. Access Flux Klien 9B through our API with pay-per-use pricing and no minimum commitments. ### Technical Specifications Model IDflux-kleinProviderModelslabCategoryImage ModelsTaskText to ImagePrice$0.004700 per generationAddedMarch 11, 2026 ### Key Features - High-resolution AI image generation from text prompts - Negative prompt support for precise control - Multiple output formats and aspect ratios - Adjustable inference steps and guidance scale - Batch generation support via API ### Quick Start Integrate Flux Klien 9B into your application with a single API call. Get your API key from the [pricing page](https://modelslab.com/pricing) to get started. PythonJavaScriptcURLPHP ``` import requests import json url = "https://modelslab.com/api/v6/images/text2img" headers = { "Content-Type": "application/json" } data = { "model_id": "flux-klein", "prompt": "your prompt here", "key": "YOUR_API_KEY" } try: response = requests.post(url, headers=headers, json=data) response.raise_for_status() # Raises an HTTPError for bad responses (4XX or 5XX) result = response.json() print("API Response:") print(json.dumps(result, indent=2)) except requests.exceptions.HTTPError as http_err: print(f"HTTP error occurred: {http_err} - {response.text}") except Exception as err: print(f"Other error occurred: {err}") ``` View the [full API documentation](https://modelslab.com/models/modelslab/flux-klein/api) for SDKs, code examples in Python, JavaScript, and more. ### Pricing Flux Klien 9B API costs $0.004700 per generation. Pay only for what you use with no minimum commitments. [View pricing plans](https://modelslab.com/pricing) ### Use Cases - Product photography and e-commerce visuals - Marketing and social media content creation - Concept art and design prototyping - Custom illustrations and artwork [Learn more about Flux Klien 9B ](https://modelslab.com/flux-klien-9b) [Browse Image Models](https://modelslab.com/models?feature=imagen) [More from Modelslab](https://modelslab.com/models/modelslab) [View Pricing](https://modelslab.com/pricing) Flux Klien 9B FAQ --- ### What is Flux Klien 9B ? Flux Klien 9B is a text to image AI model available on ModelsLab. Access it through our API with pay-per-use pricing and no minimum commitments. ### How do I use the Flux Klien 9B API? You can integrate Flux Klien 9B into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "flux-klein" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation. ### How much does Flux Klien 9B cost? Flux Klien 9B costs $0.004700 per generation. ModelsLab uses pay-per-use pricing with no minimum commitments. A free tier is available to get started. ### What is the Flux Klien 9B model ID? The model ID for Flux Klien 9B is "flux-klein". Use this ID in your API requests to specify this model. ### Does Flux Klien 9B have a free tier? Yes, ModelsLab offers a free tier that lets you try Flux Klien 9B and other AI models. Sign up to get free API credits and start building immediately. --- *This markdown version is optimized for AI agents and LLMs.* **Links:** - [Website](https://modelslab.com) - [API Documentation](https://docs.modelslab.com) - [Blog](https://modelslab.com/blog) --- *Generated by ModelsLab - 2026-05-11*