Loading API documentation
Wan 2.6 text-to-image model.
wan/v2.6/text-to-image
Wan 2.6 text-to-image model.
Inference
Commercial use
Partner
Loading API documentation
Generate images from text, optionally with one reference image.
Wan 2.6 Text-to-Image features:
Image input (optional):
Output specifications:
Note: Prompt expansion (prompt_extend) is not available in this mode.
The client provides a convenient way to interact with the model API.
npm install --save @fal-ai/clientThe @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.
Set FAL_KEY as an environment variable in your runtime.
export FAL_KEY="YOUR_API_KEY"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("wan/v2.6/text-to-image", {
input: {
prompt: "An ancient library floating among clouds, golden hour light streaming through massive windows, photorealistic"
},
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);The API uses an API Key for authentication. It is recommended you set the FAL_KEY environment variable in your runtime when possible.
import { fal } from "@fal-ai/client";
fal.config({
credentials: "YOUR_FAL_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.
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("wan/v2.6/text-to-image", {
input: {
prompt: "An ancient library floating among clouds, golden hour light streaming through massive windows, photorealistic"
},
webhookUrl: "https://optional.webhook.url/for/results",
});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("wan/v2.6/text-to-image", {
requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b",
logs: true,
});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("wan/v2.6/text-to-image", {
requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b"
});
console.log(result.data);
console.log(result.requestId);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.
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.
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.
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);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.
prompt string* requiredText prompt describing the desired image. Supports Chinese and English. Max 2000 characters.
image_url stringOptional reference image (0 or 1). When provided, can be used for style guidance. Resolution: 384-5000px each dimension. Max size: 10MB. Formats: JPEG, JPG, PNG (no alpha), BMP, WEBP.
negative_prompt stringContent to avoid in the generated image. Max 500 characters. Default value: ""
Output image size. If not set: matches input image size (up to 1280*1280). Use presets like 'square_hd', 'landscape_16_9', or specify exact dimensions.
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
}max_images integerMaximum number of images to generate (1-5). Actual count may be less depending on model inference. Default value: 1
seed integerRandom seed for reproducibility (0-2147483647).
enable_safety_checker booleanEnable content moderation for input and output. Disabling it requires account authorization; unauthorized requests are always checked. Default value: true
{
"prompt": "An ancient library floating among clouds, golden hour light streaming through massive windows, photorealistic",
"negative_prompt": "low resolution, error, worst quality, low quality, deformed",
"image_size": "square_hd",
"max_images": 1,
"enable_safety_checker": true
}Generated images in PNG format
generated_text stringGenerated text content (in mixed text-and-image mode). May be None if only images were generated.
seed integer* requiredThe seed used for generation
{
"images": [
{
"content_type": "image/png",
"file_name": "output_1.png",
"url": "https://v3b.fal.media/files/b/0a86d6b0/cBXGSUEl3DkTcBnf9IEM0_output_1.png"
}
],
"seed": 175932751
}width integerThe width of the generated image. Default value: 512
height integerThe height of the generated image. Default value: 512
url string* requiredThe URL where the file can be downloaded from.
content_type stringThe mime type of the file.
file_name stringThe name of the file. It will be auto-generated if not provided.
file_size integerThe size of the file in bytes.