download

Requirements#

needs	what
OS	Windows 10 or 11, 64-bit
GPU	NVIDIA (CUDA) or AMD/Intel (Vulkan) recommended. CPU-only works, just much slower.
.NET	Bundled: nothing to install separately
Disk	~310 MB for the app; a few GB per model you download

Getting started#

1. Download and unzip the portable ZIP anywhere: no admin rights needed.
2. Run Gentastic.App.exe. On first launch it detects your GPU and recommends a backend (CUDA, Vulkan, or CPU): confirm or override it.
3. Open the Models page and download a model. FLUX.2 klein 4B is the default: small, fast, and needs no licence token.
4. Go to Generate, type a prompt, and hit Generate. That's the whole workflow.

Before you download: responsible use#

This application can generate adult content#

Gentastic ships with optional, opt-in models capable of generating explicit adult imagery, and with a "keep-face" identity feature that can place a real person's likeness into a generated scene. This section is a warning and a policy disclosure, not a feature pitch: read it before you install.

• Adult models are hidden by default. Enabling them requires an explicit confirmation that you are of legal age to view adult content in your jurisdiction.
• Every generation using an adult or identity-locked model requires you to acknowledge, each time: no depicting minors, no real people other than yourself, no deepfakes, and that you remain legally responsible for what you generate, even though the app runs entirely offline on your own machine.
• Gentastic performs no content moderation of what you type or generate. Responsibility for compliance with the law in your jurisdiction is yours alone.

If you're not comfortable with that, the default, general-purpose models cover text-to-image, image-to-image, and photo editing without any of this, and that's most of what most people use Gentastic for.