Where AI takes shape
SDG is where Ngo Thuan (Copax) brings together software, image – music – video generation APIs and practical AI know-how, so anyone can use AI effectively.
FeaturedVideo Downloader – Download Videos from Any Website
If you see it, you can download it: auto-detect videos on any page, download high-quality YouTube, TikTok, and Facebook Reels with just one click.
FeaturedAI Remaster Studio
AI stem separation, mastering, hook finding, and beat-sync video creation – Windows desktop software for music producers & short-video creators.
AI Image Generation API
Text-to-image and image-to-image with SDXL, Flux, Qwen models... custom-trained and optimized by Copax.
Contact us for the best pricingAI Music API
Generate music, separate stems, and master audio via REST API – integrate into your apps and websites.
Contact us for the best pricingAI Video Generation API
Image-to-video, text-to-video, beat-sync video – multi-worker queue, stable performance.
Contact us for the best pricingMulti-Provider API Gateway
One API key for multiple AI providers: load balancing, automatic failover, and credit management.
Contact us for the best pricingTurn AI Apps into Products
From 'vibe code' to a production-ready product: backend, users, credits, payments, and deployment.
Contact us for the best priceCustom Model & LoRA Training
Checkpoint/LoRA for SDXL, Flux, Pony, Illustrious – characters, styles, products.
Contact us for the best priceEnd-to-end AI – from model to product
Automatic payment
Pay and the system confirms it and issues your license within seconds.
Transparent licensing
Keys, purchase history and download links are always available to you.
Self-trained models
Dozens of self-trained SDXL/Flux/Pony models, used hundreds of thousands of times.
Dedicated support
Installation and API integration help directly from the person who built the product.
Trusted by creators & developers
“Super handy video downloader—bulk download Reels in just a few clicks.”
“Copax's models deliver photorealistic images and stunning colors; I use them every day.”
“ Stable API, clear documentation, and integration took just a single afternoon.”
How to Train AI Character LoRAs: From Data Preparation to Testing
Detailed guide on training AI character LoRAs for beginners: What is LoRA, choosing SD1.5/SDXL/Flux, preparing datasets, captions and trigger words, installing kohya_ss or AI Toolkit, easy-to-understand parameter tables, choosing epochs, and fixing common errors.
11/1/2026
What is AI Stem Splitting? How to Separate Vocals, Beats, and Bass from Songs
AI stem splitting helps separate songs into vocals, drums, bass, and instruments. Learn how it works, its applications for remixes, karaoke, short videos, and tips for achieving the best separation quality.
11/1/2026
Mastering Music for Streaming: Understanding LUFS, True Peak, and AI-Powered Workflows
An easy-to-understand explanation of LUFS, True Peak, basic mastering chains, and how to use AI tools to master songs for Spotify, YouTube, and TikTok without compromising sound quality.
11/1/2026Want to turn an AI idea into a working product?
From ComfyUI workflows and API gateways to apps with users, credits and payments – I handle it end to end.