--- title: Flux 3 Klein Text To Image API | ModelsLab description: Generate images from text with Flux 3 Klein Text To Image. High-resolution AI image generation. Plans from $21/month. url: https://modelslab.com/models/modelslab/flux-3-klein.md canonical: https://modelslab.com/models/modelslab/flux-3-klein type: product component: Playground/Endpoint/Index generated_at: 2026-10-16T23:29:41.546673Z --- [![Flux 3 Klein Text To Image thumbnail](https://assets.modelslab.ai/api-logos/01KPMZY676ZM0Z7YJWBM9C78QP.png)](https://modelslab.com/models/modelslab)Flux 3 Klein Text To Image --- [by ModelsLab](https://modelslab.com/models/modelslab)FLUX 3 Klein is Black Forest Labs’ compact, fast text-to-image model. Turn a prompt into photos, illustrations, and text-heavy designs with accurate typography, at up to 2K resolution. `flux-3-klein` Closed Source Model [Unlimited Usage](https://modelslab.com/pricing) [LLMs.txt](https://modelslab.com/models/modelslab/flux-3-klein/llms.txt) [API Playground](/models/modelslab/flux-3-klein)API DocumentationVibe 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. Width Height Number of Images Layout Add region burger DescriptionBurger Label (optional) Target placement Draw, drag or resize the box. Use arrow keys when focused for fine adjustments (Shift for larger steps, Alt to resize). **$0.0047** per image generation Login to Generate Output --- Idle Unknown content type Looking for something different? --- Models that trade off differently against the one you are viewing ### Better quality Newer flagship models that generally produce stronger results. 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API access starts at $21/month, and open-source models are unlimited on the $149/month plan. ### Technical Specifications Model IDflux-3-klein ProviderModelsLab CategoryImage Models TaskText to Image AddedOctober 16, 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 3 Klein Text To Image 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-3-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}") ``` ### Use Cases - Product photography and e-commerce visuals - Marketing and social media content creation - Concept art and design prototyping - Custom illustrations and artwork [Flux API](/flux-api) [Browse Image Models](https://modelslab.com/models?feature=imagen) [More from ModelsLab](https://modelslab.com/models/modelslab) [View Pricing](https://modelslab.com/pricing) Flux 3 Klein Text To Image FAQ --- ### What is Flux 3 Klein Text To Image? Flux 3 Klein Text To Image is a text to image AI model by ModelsLab available on ModelsLab. API access starts at $21/month, and open-source models are unlimited on the $149/month plan. ### How do I use the Flux 3 Klein Text To Image API? You can integrate Flux 3 Klein Text To Image into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "flux-3-klein" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation. ### What is the Flux 3 Klein Text To Image model ID? The model ID for Flux 3 Klein Text To Image is "flux-3-klein". Use this ID in your API requests to specify this model. ### Do I need a paid plan to use Flux 3 Klein Text To Image? Yes. ModelsLab is subscription-based with no free tier — plans start at $21/month (Basic, 3,250 API calls). The $149/month Open Source Unlimited plan includes unlimited generation across open-source models; premium third-party models are billed per call from your wallet. --- *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 - 2026-10-17*