> For the complete documentation index, see [llms.txt](https://docs.flora.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.flora.ai/models/image-models/flux-kontext-max-by-black-forest-labs.md).

# Flux Kontext Max (by Black Forest Labs)

### **Overview**

High performing text-to-image model with multi-image support and flexible aspect ratios.

***

### **Quick facts**

* **Modes:** Text → Image · Image → Image · Images → Image
* **Default output / size:** 1024×1024 (1:1)
* **Aspect ratios:** 21:9, 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16, 9:21

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### **What it's great for**

* High-quality text-to-image generation with excellent prompt adherence
* Multi-image blending and composition tasks
* Image editing with reference images
* Creative workflows requiring diverse aspect ratios

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### Parameters

| Control        | Type     | Default | Notes                                                                   |
| -------------- | -------- | ------- | ----------------------------------------------------------------------- |
| `Prompt`       | Text     | —       | Natural-language instruction (required)                                 |
| `Aspect Ratio` | Dropdown | 1:1     | 21:9, 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16, 9:21 (auto for image inputs) |
| `Seed`         | Number   | Random  | Optional for repeatable results                                         |

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### **Modes**

| Mode           | Estimated time | Required inputs | Typical use               |
| -------------- | -------------: | --------------- | ------------------------- |
| Text → Image   |           \~8s | Prompt          | Generate images from text |
| Image → Image  |           \~8s | Prompt, Image   | Edit or transform images  |
| Images → Image |           \~8s | Prompt, Images  | Blend up to 5 images      |

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### **Output options**

| Option       | Values / notes                                  |
| ------------ | ----------------------------------------------- |
| Aspect ratio | 21:9, 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16, 9:21 |

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### **Prompt tips**

* Use specific style descriptors for better results
* Seed values enable reproducible outputs
* For multi-image blending, describe the desired composition clearly

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### **Safety**

Text moderation is applied according to platform rules — avoid disallowed content.

***


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