> 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-pro-by-black-forest-labs.md).

# Flux Pro (by Black Forest Labs)

### **Overview**

High performing text-to-image model with exceptional quality and detail.

***

### **Quick facts**

* **Modes:** Text → 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

***

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

* Professional-grade image generation with superior quality
* Complex prompts requiring high adherence and detail
* Commercial and creative projects demanding best-in-class results
* Wide range of artistic and photographic styles

***

### 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 |
| `Seed`         | Number   | Random  | Optional for repeatable results                 |

***

### **Modes**

| Mode         | Estimated time | Required inputs | Typical use                           |
| ------------ | -------------: | --------------- | ------------------------------------- |
| Text → Image |          \~24s | Prompt          | Professional text-to-image generation |

***

### **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 |

***

### **Prompt tips**

* Detailed prompts produce better results with this model
* Style descriptors work exceptionally well
* Seed values enable exact reproduction
* Longer generation time reflects higher quality processing

***

### **Safety**

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

***


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.flora.ai/models/image-models/flux-pro-by-black-forest-labs.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.