Generates images from a text prompt at resolutions up to 2048×2048, with automatic prompt rewriting and prompt-guided resolution selection, building on Qwen's strength in complex text rendering and precise prompt adherence

alibaba/qwen-image-3/text-to-image

Learn more about Qwen Image 3

Inference

Commercial use

Partner

Schema

Playground API Examples

alibaba/qwen-image-3/text-to-image

Schema

alibaba/qwen-image-3/text-to-image

Learn more about Qwen Image 3

Inference

Commercial use

Partner

Schema

Playground API Examples

About

Generate images from text using Qwen Image 3 Pro.

1. Calling the API#

Install the client#

The client provides a convenient way to interact with the model API.

npm install --save @fal-ai/client

Migrate to @fal-ai/client

The @fal-ai/serverless-client package has been deprecated in favor of @fal-ai/client. Install the new package and update your imports — see client setup.

Setup your API Key#

Set FAL_KEY as an environment variable in your runtime.

export FAL_KEY="YOUR_API_KEY"

Submit a request#

The client API handles the API submit protocol. It will handle the request status updates and return the result when the request is completed.

import { fal } from "@fal-ai/client";

const result = await fal.subscribe("alibaba/qwen-image-3/text-to-image", {
  input: {
    prompt: "A cute baby koala holding a card that says \"Qwen Image 3 is now available on fal\" while on a water slide"
  },
  logs: true,
  onQueueUpdate: (update) => {
    if (update.status === "IN_PROGRESS") {
      update.logs.map((log) => log.message).forEach(console.log);
    }
  },
});
console.log(result.data);
console.log(result.requestId);

2. Authentication#

The API uses an API Key for authentication. It is recommended you set the FAL_KEY environment variable in your runtime when possible.

API Key#

In an environment where you cannot set environment variables, you can configure the API key manually on the client.

import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY"
});

Protect your API Key

When running code on the client-side (e.g. in a browser, mobile app or GUI applications), make sure to not expose your FAL_KEY. Instead, use a server-side proxy to make requests to the API. For more information, check out our server-side integration guide.

3. Queue#

Long-running requests

For long-running requests, such as training jobs or models with slower inference times, it is recommended to check the Queue status and rely on Webhooks instead of blocking while waiting for the result.

Submit a request#

The client API provides a convenient way to submit requests to the model.

import { fal } from "@fal-ai/client";

const { request_id } = await fal.queue.submit("alibaba/qwen-image-3/text-to-image", {
  input: {
    prompt: "A cute baby koala holding a card that says \"Qwen Image 3 is now available on fal\" while on a water slide"
  },
  webhookUrl: "https://optional.webhook.url/for/results",
});

Fetch request status#

You can fetch the status of a request to check if it is completed or still in progress.

import { fal } from "@fal-ai/client";

const status = await fal.queue.status("alibaba/qwen-image-3/text-to-image", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b",
  logs: true,
});

Get the result#

Once the request is completed, you can fetch the result. See the Output Schema for the expected result format.

import { fal } from "@fal-ai/client";

const result = await fal.queue.result("alibaba/qwen-image-3/text-to-image", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b"
});
console.log(result.data);
console.log(result.requestId);

4. Files#

Some attributes in the API accept file URLs as input. Whenever that's the case you can pass your own URL or a Base64 data URI.

Data URI (base64)#

You can pass a Base64 data URI as a file input. The API will handle the file decoding for you. Keep in mind that for large files, this alternative although convenient can impact the request performance.

Hosted files (URL)#

You can also pass your own URLs as long as they are publicly accessible. Be aware that some hosts might block cross-site requests, rate-limit, or consider the request as a bot.

Uploading files#

We provide a convenient file storage that allows you to upload files and use them in your requests. You can upload files using the client API and use the returned URL in your requests.

import { fal } from "@fal-ai/client";

const file = new File(["Hello, World!"], "hello.txt", { type: "text/plain" });
const url = await fal.storage.upload(file);

Auto uploads

The client will auto-upload the file for you if you pass a binary object (e.g. File, Data).

Read more about file handling in our file upload guide.

5. Schema#

Input#

prompt string* required

Text prompt describing the desired image. Supports Chinese and English. Max 5000 characters.

negative_prompt string

Content to avoid in the generated image. Max 500 characters. Default value: ""

image_size ImageSize | Enum

The size of the generated image. Total number of pixels must be between 512x512 and 2048x2048. Default value: square_hd

Possible enum values: square_hd, square, portrait_4_3, portrait_16_9, landscape_4_3, landscape_16_9

Note: For custom image sizes, you can pass the width and height as an object:

"image_size": {
  "width": 1280,
  "height": 720
}

enable_prompt_expansion boolean

Enable automatic LLM prompt rewriting for better results. Default value: true

seed integer

Random seed for reproducibility (0-2147483647).

enable_safety_checker boolean

Enable content moderation for input and output. Disabling it requires account authorization; unauthorized requests are always checked. Default value: true

sync_mode boolean

If True, the media will be returned as a data URI and the output data won't be available in the request history.

num_images integer

The number of images to generate. Default value: 1

output_format OutputFormatEnum

The format of the generated image. Default value: "png"

Possible enum values: jpeg, png, webp

{
  "prompt": "A cute baby koala holding a card that says \"Qwen Image 3 is now available on fal\" while on a water slide",
  "negative_prompt": "low resolution, error, worst quality, low quality, deformed",
  "image_size": {
    "width": 1024,
    "height": 1024
  },
  "enable_prompt_expansion": true,
  "enable_safety_checker": true,
  "num_images": 1,
  "output_format": "png"
}

Output#

images list<File>* required

Generated images.

seed integer* required

The seed used for generation.

{
  "images": [
    {
      "url": "https://v3b.fal.media/files/b/0a8bf02b/bKyzcdmA_kYq4ru5s9H7k_sQ893ydD.png"
    }
  ],
  "seed": 42
}

Other types#

File#

url string* required

The URL where the file can be downloaded from.

content_type string

The mime type of the file.

file_name string

The name of the file. It will be auto-generated if not provided.

file_size integer

The size of the file in bytes.

ImageSize#

width integer

The width of the generated image. Default value: 512

height integer

The height of the generated image. Default value: 512

Related Models

About

Generate images from text using Qwen Image 3 Pro.

1. Calling the API#

Install the client#

The client provides a convenient way to interact with the model API.

npm install --save @fal-ai/client

Migrate to @fal-ai/client

The @fal-ai/serverless-client package has been deprecated in favor of @fal-ai/client. Install the new package and update your imports — see client setup.

Setup your API Key#

Set FAL_KEY as an environment variable in your runtime.

export FAL_KEY="YOUR_API_KEY"

Submit a request#

The client API handles the API submit protocol. It will handle the request status updates and return the result when the request is completed.

import { fal } from "@fal-ai/client";

const result = await fal.subscribe("alibaba/qwen-image-3/text-to-image", {
  input: {
    prompt: "A cute baby koala holding a card that says \"Qwen Image 3 is now available on fal\" while on a water slide"
  },
  logs: true,
  onQueueUpdate: (update) => {
    if (update.status === "IN_PROGRESS") {
      update.logs.map((log) => log.message).forEach(console.log);
    }
  },
});
console.log(result.data);
console.log(result.requestId);

2. Authentication#

The API uses an API Key for authentication. It is recommended you set the FAL_KEY environment variable in your runtime when possible.

API Key#

In an environment where you cannot set environment variables, you can configure the API key manually on the client.

import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY"
});

Protect your API Key

3. Queue#

Long-running requests

Submit a request#

The client API provides a convenient way to submit requests to the model.

import { fal } from "@fal-ai/client";

const { request_id } = await fal.queue.submit("alibaba/qwen-image-3/text-to-image", {
  input: {
    prompt: "A cute baby koala holding a card that says \"Qwen Image 3 is now available on fal\" while on a water slide"
  },
  webhookUrl: "https://optional.webhook.url/for/results",
});

Fetch request status#

You can fetch the status of a request to check if it is completed or still in progress.

import { fal } from "@fal-ai/client";

const status = await fal.queue.status("alibaba/qwen-image-3/text-to-image", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b",
  logs: true,
});

Get the result#

Once the request is completed, you can fetch the result. See the Output Schema for the expected result format.

import { fal } from "@fal-ai/client";

const result = await fal.queue.result("alibaba/qwen-image-3/text-to-image", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b"
});
console.log(result.data);
console.log(result.requestId);

4. Files#

Some attributes in the API accept file URLs as input. Whenever that's the case you can pass your own URL or a Base64 data URI.

Data URI (base64)#

Hosted files (URL)#

You can also pass your own URLs as long as they are publicly accessible. Be aware that some hosts might block cross-site requests, rate-limit, or consider the request as a bot.

Uploading files#

We provide a convenient file storage that allows you to upload files and use them in your requests. You can upload files using the client API and use the returned URL in your requests.

import { fal } from "@fal-ai/client";

const file = new File(["Hello, World!"], "hello.txt", { type: "text/plain" });
const url = await fal.storage.upload(file);

Auto uploads

The client will auto-upload the file for you if you pass a binary object (e.g. File, Data).

Read more about file handling in our file upload guide.

5. Schema#

Input#

prompt string* required

Text prompt describing the desired image. Supports Chinese and English. Max 5000 characters.

negative_prompt string

Content to avoid in the generated image. Max 500 characters. Default value: ""

image_size ImageSize | Enum

The size of the generated image. Total number of pixels must be between 512x512 and 2048x2048. Default value: square_hd

Possible enum values: square_hd, square, portrait_4_3, portrait_16_9, landscape_4_3, landscape_16_9

Note: For custom image sizes, you can pass the width and height as an object:

"image_size": {
  "width": 1280,
  "height": 720
}

enable_prompt_expansion boolean

Enable automatic LLM prompt rewriting for better results. Default value: true

seed integer

Random seed for reproducibility (0-2147483647).

enable_safety_checker boolean

Enable content moderation for input and output. Disabling it requires account authorization; unauthorized requests are always checked. Default value: true

sync_mode boolean

If True, the media will be returned as a data URI and the output data won't be available in the request history.

num_images integer

The number of images to generate. Default value: 1

output_format OutputFormatEnum

The format of the generated image. Default value: "png"

Possible enum values: jpeg, png, webp

{
  "prompt": "A cute baby koala holding a card that says \"Qwen Image 3 is now available on fal\" while on a water slide",
  "negative_prompt": "low resolution, error, worst quality, low quality, deformed",
  "image_size": {
    "width": 1024,
    "height": 1024
  },
  "enable_prompt_expansion": true,
  "enable_safety_checker": true,
  "num_images": 1,
  "output_format": "png"
}

Output#

images list<File>* required

Generated images.

seed integer* required

The seed used for generation.

{
  "images": [
    {
      "url": "https://v3b.fal.media/files/b/0a8bf02b/bKyzcdmA_kYq4ru5s9H7k_sQ893ydD.png"
    }
  ],
  "seed": 42
}

Other types#

File#

url string* required

The URL where the file can be downloaded from.

content_type string

The mime type of the file.

file_name string

The name of the file. It will be auto-generated if not provided.

file_size integer

The size of the file in bytes.

ImageSize#

width integer

The width of the generated image. Default value: 512

height integer

The height of the generated image. Default value: 512

Related Models

Qwen Image 3 Text to Image API Docs | fal

alibaba/qwen-image-3/text-to-image

Table of contents

Table of contents

alibaba/qwen-image-3/text-to-image

About

1. Calling the API#

Install the client#

Migrate to @fal-ai/client

Setup your API Key#

Submit a request#

2. Authentication#

API Key#

Protect your API Key

3. Queue#

Long-running requests

Submit a request#

Fetch request status#

Get the result#

4. Files#

Data URI (base64)#

Hosted files (URL)#

Uploading files#

Auto uploads

5. Schema#

Input#

Output#

Other types#

File#

ImageSize#

Related Models

Table of contents

About

1. Calling the API#

Install the client#

Migrate to @fal-ai/client

Setup your API Key#

Submit a request#

2. Authentication#

API Key#

Protect your API Key

3. Queue#

Long-running requests

Submit a request#

Fetch request status#

Get the result#

4. Files#

Data URI (base64)#

Hosted files (URL)#

Uploading files#

Auto uploads

5. Schema#

Input#

Output#

Other types#

File#

ImageSize#

Related Models