---
slug: open-source-models
competitorName: Open-source models
title: 'IDM-VTON, CatVTON and Kolors vs Genlook: Open-Source Try-On Compared'
description: >-
  IDM-VTON, CatVTON and Kolors are research try-on models with non-commercial
  terms or no weights. Genlook is a commercial try-on API at $0.02. Compared.
keywords:
  - IDM-VTON
  - CatVTON
  - Kolors virtual try-on
  - open source virtual try on
  - IDM-VTON alternative
  - virtual try on API
eyebrow: Open-source try-on alternative
h1: Genlook vs. open-source try-on models
tldr: >-
  IDM-VTON, CatVTON and Kolors are the try-on models developers find first. They
  are research work: non-commercial licenses, or no released weights at all.
  Genlook is a commercial try-on API. Here is what production takes.
primaryCtaText: Get API keys
primaryCtaHref: 'https://platform.genlook.app'
secondaryCtaText: Read the docs →
secondaryCtaHref: /docs/tryon-api/introduction
author: thibault
lastChecked: '2026-10-07'
sources:
  - label: 'IDM-VTON GitHub repository: license, commit history, issues'
    url: 'https://github.com/yisol/IDM-VTON'
  - label: 'IDM-VTON model card on Hugging Face: license'
    url: 'https://huggingface.co/yisol/IDM-VTON'
  - label: >-
      IDM-VTON on Replicate: run time, hardware, cost per run, non-commercial
      note
    url: 'https://replicate.com/cuuupid/idm-vton'
  - label: ECCV 2024 paper page for IDM-VTON
    url: 'https://eccv2024.ecva.net/virtual/2024/poster/935'
  - label: 'CatVTON GitHub repository: license'
    url: 'https://github.com/Zheng-Chong/CatVTON'
  - label: 'CatVTON on fal: research-only label'
    url: 'https://fal.ai/models/fal-ai/cat-vton'
  - label: 'Kolors GitHub repository: README license section, model license'
    url: 'https://github.com/Kwai-Kolors/Kolors'
  - label: 'Kolors Virtual Try-On Space on Hugging Face: likes, disclaimer, app code'
    url: 'https://huggingface.co/spaces/Kwai-Kolors/Kolors-Virtual-Try-On'
  - label: 'Kling Kolors try-on on fal: price, commercial use'
    url: 'https://fal.ai/models/fal-ai/kling/v1-5/kolors-virtual-try-on'
  - label: Genlook Try-On API pricing
    url: 'https://genlook.app/developers#pricing'
noindex: false
canonicalPath: /developers/vs/open-source-models
---

<Verdict label="01 · The short verdict" title="Research models, or a product." description="The open models moved the field, and they are worth studying. Their terms and their maintenance stop at research.">
  <VerdictColumn name="Open-source models" bestFor="Built for research">
    <Point type="pro">IDM-VTON: ECCV 2024 paper, 1.6M+ runs on its Replicate page</Point>
    <Point type="pro">Kolors: the most-liked try-on demo on Hugging Face</Point>
    <Point type="con">IDM-VTON and CatVTON are CC BY-NC-SA: non-commercial use only</Point>
    <Point type="con">Kolors try-on weights were never released; the commercial route is Kling</Point>
    <Point type="con">Hosting, preprocessing, storage and moderation are yours</Point>
  </VerdictColumn>
  <VerdictColumn name="Genlook" bestFor="Built for production">
    <Point type="pro">Commercial try-on API, licensed end to end</Point>
    <Point type="pro">$0.02 per try-on on plans, down to $0.015</Point>
    <Point type="pro">Any product type, no masks, no prompts, no GPUs</Point>
    <Point type="pro">Maintained engine behind one stable endpoint</Point>
  </VerdictColumn>
</Verdict>

<ComparisonTable label="02 · Feature by feature" title="Where each option stands." subtitle="Checked against each model's repository, license and hosted pages on the date above.">
  <Row feature="Commercial use" desc="Can results ship in a product?" genlook="Yes, commercial service" competitor="IDM-VTON, CatVTON: non-commercial; Kolors: demo for trials only" highlightGenlook />
  <Row feature="Cost per try-on" desc="What a generation costs" genlook="$0.02 on plans, down to $0.015; $0.04 pay as you go" competitor="About $0.023 of A100 compute for IDM-VTON on Replicate; ~$0.07 for Kling's try-on on fal" highlightGenlook />
  <Row feature="Speed" desc="Time to a result" genlook="8.2s median" competitor="About 17s for IDM-VTON on an A100; no figure for the others" highlightGenlook />
  <Row feature="Pipeline" desc="What a request involves" genlook="Two REST calls, no prompts" competitor="IDM-VTON: human parsing and DensePose, then inference" highlightGenlook />
  <Row feature="Garment coverage" desc="What can be tried on" genlook="Any product type, one endpoint" competitor="IDM-VTON demo masking set for tops; clothing focus across the three" highlightGenlook />
  <Row feature="Maintenance" desc="Who fixes what breaks" genlook="Maintained service, engine updates behind the API" competitor="IDM-VTON: last code change July 2024; Kolors demo: unchanged since September 2024" highlightGenlook />
  <Row feature="Operations" desc="Storage, retries, moderation" genlook="Included, plus user records and deletion API" competitor="Yours: hosting, storage, moderation, retries" highlightGenlook />
  <Row feature="Free start" desc="Trying before paying" genlook="10 free credits" competitor="Free weights or demos, for research" equal />
</ComparisonTable>

<ExamplesGallery title="The part you can't compare on paper." note="Four generations from the Genlook engine on real product photos.">
  <ExampleItem example="dresses-cocktail-mini-dress--freya" href="/for/dresses" />
  <ExampleItem example="streetwear-oversized-hoodie--leo" href="/for/streetwear" />
  <ExampleItem example="denim-high-rise-straight-jeans--nadia" title="High-waisted jeans" href="/for/denim" />
  <ExampleItem example="outerwear-trench-coat--claire" title="Classic trench coat" href="/for/outerwear" />
</ExamplesGallery>

<ProseSection label="03 · Model by model" title="What each open model actually offers">
| Model | Weights | License | Status |
| --- | --- | --- | --- |
| **IDM-VTON** | Public on GitHub and Hugging Face | CC BY-NC-SA 4.0, non-commercial | Last code change July 2024; maintainer not answering recent issues |
| **CatVTON** | Public on GitHub | CC BY-NC-SA 4.0, non-commercial; labelled research only on fal | Research release |
| **Kolors Virtual Try-On** | Not released; the demo calls a private Kuaishou endpoint | Demo described as free for trials | Demo largely unchanged since September 2024 |

**IDM-VTON** is the one most developers reach first. The ECCV 2024 paper is widely cited, its Replicate page shows more than 1.6 million runs, and the weights are a download away. Running it means a preprocessing pipeline of human parsing and DensePose, a demo whose automatic masking is set for tops, and about 17 seconds per image on an A100.

**CatVTON** carries the same CC BY-NC-SA terms in its repository, and fal labels its hosted version research only.

**Kolors Virtual Try-On** is the most-liked try-on demo on Hugging Face, but there is no open try-on model behind it: the open Kolors release covers Kuaishou's text-to-image model, and the Space forwards requests to a private endpoint. The commercial route is Kling's try-on, sold through Kling and hosts like fal at about $0.07 per call, as raw inference.

### How Genlook handles it

Genlook is a commercial try-on API, licensed end to end. One endpoint covers clothing, shoes, glasses, jewelry, hats and wigs with no masks, prompts or preprocessing. Results come back synchronously or through webhooks, end users are records you can delete on request, and the engine improves behind the same contract. A try-on costs $0.02 on a plan and $0.015 at volume, with no GPUs to rent.

Reproduce the open models to learn the field. When real customers are on the other end, use an API that is licensed and maintained.
</ProseSection>

<FeatureGrid label="04 · In practice" title="What the Genlook API is tuned for.">
  <Feature title="Licensed for commerce" description="A commercial service end to end. No non-commercial license or trial-only demo terms between your feature and your revenue." />
  <Feature title="No pipeline to build" description="No human parsing, DensePose or masks. Send a person photo and a product, get the try-on back." />
  <Feature title="Any product type" description="Clothing, shoes, glasses, jewelry, hats, wigs: one endpoint covers them all." />
  <Feature title="Operations included" description="Hosting, storage, webhooks, moderation, user records and a deletion endpoint for privacy requests." />
</FeatureGrid>

<Steps label="05 · Getting started" title="Two calls to your first try-on.">
  <Step number="1" title="Create a key" description="Self-serve at platform.genlook.app. New accounts start with 10 free credits." />
  <Step number="2" title="Upload and generate" description="POST the person photo, POST the try-on. Get the result in the same request, or receive a webhook." />
  <Step number="3" title="Go live" description="Plans start at $20 a month for 1,000 try-ons ($0.02 each), down to $0.015 at volume, or pay as you go at $0.04. Building something new? The startup program adds free credits." />
</Steps>

<Faq label="06 · FAQ" title="Questions, answered.">
  <FaqItem question="Can I use IDM-VTON commercially?">
Not under its published license. The code and checkpoints carry CC BY-NC-SA 4.0 terms, and its Replicate page states "Non-Commercial use only". A commercial product is commercial use, so shipping it falls outside those terms unless you license the model separately from its authors.
  </FaqItem>
  <FaqItem question="Is there an IDM-VTON API?">
Not from its authors. Hosts such as Replicate run it for about $0.023 per image on an A100, with the same non-commercial license attached. Genlook is a commercial try-on API at $0.02 per try-on on a plan.
  </FaqItem>
  <FaqItem question="Can I download the Kolors try-on model?">
No. Kuaishou has not released try-on weights; the open Kolors repository covers its text-to-image model. The Hugging Face demo calls a private endpoint. For commercial use, the related product is Kling's try-on, sold through Kling and hosts like fal.
  </FaqItem>
  <FaqItem question="Is CatVTON free for commercial use?">
No. Its repository licenses the code, checkpoints and demo under CC BY-NC-SA 4.0, and fal labels its hosted version research only.
  </FaqItem>
  <FaqItem question="When are the open models the right choice?">
For research, benchmarking and learning how diffusion try-on works. That is what their terms allow, and within those bounds they are excellent material. For a product with paying customers, use a licensed API.
  </FaqItem>
</Faq>

<Sources />

<CtaBlock
  title="Build try-on into your product."
  description="Self-serve keys, ten free credits, and two API calls to your first generation."
  primaryText="Get API keys"
  primaryHref="https://platform.genlook.app"
  secondaryText="Read the docs"
  secondaryHref="/docs/tryon-api/introduction"
/>