Virtual Try On APIs

Explore fal’s Collection Of The Best Virtual Try-On APIs

fal is the best developer-friendly, one-stop shop for AI virtual try-on models. Every virtual try-on model on fal runs through the same SDK pattern, so once you’ve integrated one, switching between Kling Kolors v1.5, FASHN v1.6, image-apps-v2, or FLUX 2 LoRA Gallery is a one-line endpoint change.

How do I run a virtual try-on through fal?

The static try-on endpoints take a person image plus a garment image and return a composited result. Here’s what it looks like after installing @fal-ai/client and setting your FAL_KEY.

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

const result = await fal.subscribe("fal-ai/kling/v1-5/kolors-virtual-try-on", {
  input: {
    human_image_url: "https://your-host.com/person.jpg",
    garment_image_url: "https://your-host.com/shirt.jpg"
  }
});

console.log(result.data.image.url);

The same call shape works across static virtual try-on endpoints. You swap the endpoint string and adjust the input fields each model expects.

Which models on fal handle image-based virtual try-on?

Here are four models that handle static image-based virtual try-on.

• Kling Kolors v1.5 takes a person image and a garment image, returning a composited output via diffusion-based inpainting. It works well with front-facing model photos paired with flat-lay or clean-background garment shots.
• FASHN v1.6 renders garment details like text and patterns at 864×1296 resolution and accepts both on-model and flat-lay garment photos. Its category parameter handles tops, bottoms, or one-pieces, with auto-detection as the default.
• image-apps-v2 try-on takes a person image and clothing image, with a preserve_pose toggle and aspect ratio control for 4K output.
• FLUX 2 LoRA Gallery applies LoRA fine-tuning to FLUX.2 for garment transfer, with batch output of 1-4 variations per call and a lora_scale parameter to balance garment visibility against photorealism.

Use these models when you need static try-on results for ecommerce, catalog imagery, personalization flows, or creative styling previews.

How does the real-time virtual try-on endpoint work?

Decart Lucy 2.1 VTON Realtime transforms your webcam feed in real time using a text prompt and an optional reference garment image. It operates over WebRTC rather than the standard request-response queue.

To start a session, you can use fal.realtime.connect with the endpoint and send your initial prompt.

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

const connection = fal.realtime.connect("decart/lucy2-vton/realtime", {
  connectionKey: `session-${Date.now()}`,
  throttleInterval: 0,
  onResult: handleResult,
});

connection.send({
  prompt: "Substitute the current top with a bright red hoodie",
  reference_image_url: "https://example.com/outfit.png"
});

You can update the prompt or reference image mid-session by sending new messages on the same connection, which is useful for shopping flows where the user cycles through garment options.

What controls do these models offer for garment accuracy or output quality?

Each model exposes different parameters for tuning garment accuracy, generation speed, and output quality.

• FASHN v1.6 has the most explicit controls: a mode parameter for the speed-to-quality tradeoff, with performance, balanced, and quality options; garment_photo_type to optimize parsing for on-model versus flat-lay inputs; and num_samples for batching multiple variations in one call.
• FLUX 2 LoRA Gallery uses lora_scale, with a 0-2 range, to control how strongly the LoRA fine-tuning influences the output. It also includes an acceleration parameter for faster generation.
• Kling Kolors v1.5 keeps its schema minimal: just the two image URLs and an optional sync_mode flag.

Use FASHN when you need more explicit control, FLUX 2 LoRA Gallery when you want LoRA-driven garment transfer and variations, and Kling Kolors when you want a simple two-image try-on flow.

Pricing

Pricing varies by model and unit across fal’s virtual try-on catalog.

As a worked example, 100 static try-on generations would cost roughly:

• $7 on Kling Kolors v1.5
• Variable cost on FLUX 2 LoRA Gallery, depending on processed megapixels
• $120 for 100 one-minute Decart Lucy 2.1 VTON Realtime sessions

You only pay for what you generate or stream, which lets you compare static try-on quality, real-time responsiveness, and garment control options without rewriting your integration.

Quick Start

Install the client

bash
npm install --save @fal-ai/client

Set your API key

bash
export FAL_KEY="YOUR_API_KEY"

Call a model

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

const result = await fal.subscribe("fal-ai/kling/v1-5/kolors-virtual-try-on", {
  input: {
    human_image_url: "https://your-host.com/person.jpg",
    garment_image_url: "https://your-host.com/shirt.jpg"
  }
});

console.log(result.data.image.url);

The same auth, billing, and queue logic carry across every virtual try-on endpoint, so you can compare models side by side without rewriting integration code.

For real-time try-on, use the WebRTC-based realtime connection flow instead of the standard request-response queue.