Krita AI Diffusion vs 
FluxGym
Krita AI Diffusion vs FluxGym compared for 2026 — features, license, ease of use, performance and which one to choose. Generative AI inside a real painting app vs Train image LoRAs with a simple web UI.
Updated regularly · curated by OpenSourceAI.tech
Krita AI Diffusion vs FluxGym at a glance
| Spec | Krita AI Diffusion | FluxGym |
|---|---|---|
| Category | AI image generation | AI image generation |
| Type | Krita plugin | LoRA trainer (GUI) |
| License | GPL-3.0 | Apache-2.0 |
| Runs locally | Yes | Yes |
| Primary language | Python | Python |
| Ease of use | Intermediate | Beginner |
| Best for | artists who want AI inside their painting workflow | artists training custom styles without config files |
| GitHub stars | 10.3k | — |
How Krita AI Diffusion and FluxGym score
| Criterion | Krita AI Diffusion | FluxGym |
|---|---|---|
| Popularity | 3.0 | n/a |
| Maintenance | 5.0 | n/a |
| Ease of use | 3.5 | 5.0 |
| Privacy | 5.0 | 5.0 |
| License freedom | 3.5 | 5.0 |
Scores are computed automatically from public signals — GitHub stars (popularity), recent commit activity (maintenance), license type (freedom), local-first design (privacy) and onboarding complexity (ease of use). Indicative, not a verdict.
What each one is
Krita AI Diffusion
This plugin brings Stable Diffusion and Flux directly into Krita: inpaint on layers, refine selections and live-paint with AI while keeping full artistic control.
- True layer-based inpainting in a pro painting app
- Live painting mode with instant AI feedback
- Uses a local ComfyUI backend — nothing leaves your machine
FluxGym
FluxGym provides a dead-simple web interface to train FLUX LoRAs on consumer GPUs, hiding the complexity of the underlying training scripts.
- Trains LoRAs on 12GB VRAM
- Simple web UI, no config files
- Built on proven training backends
Key differences
Krita AI Diffusion is krita plugin, while FluxGym is loRA trainer (GUI). Their licenses differ (GPL-3.0 vs Apache-2.0), which matters if you ship a commercial product. Krita AI Diffusion leans more intermediate-friendly, whereas FluxGym is more suited to beginner users. In short, Krita AI Diffusion fits artists who want AI inside their painting workflow, and FluxGym fits artists training custom styles without config files.
Which should you choose?
Choose Krita AI Diffusion for artists who want AI inside their painting workflow. Choose FluxGym for artists training custom styles without config files.
There is rarely one winner — many setups use both. The right pick depends on your hardware, your team's skills, and whether you value simplicity or control.
Frequently asked questions
Is Krita AI Diffusion or FluxGym easier to use?
FluxGym is generally the easier of the two to get started with, while Krita AI Diffusion rewards more setup with more control.
Are Krita AI Diffusion and FluxGym free?
Krita AI Diffusion is free and open source (GPL-3.0), and FluxGym is free and open source (Apache-2.0). Neither charges for the core software.
Can I run Krita AI Diffusion and FluxGym locally?
Krita AI Diffusion: yes · FluxGym: yes. Both can be used without sending your data to a third-party cloud where their setup allows.
Krita AI Diffusion vs FluxGym — which should I pick in 2026?
Choose Krita AI Diffusion for artists who want AI inside their painting workflow. Choose FluxGym for artists training custom styles without config files.
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