← ImageLoRA
How to train a FLUX.3 Image Klein LoRA
Which trainers support FLUX.3 Image Klein (BFL), how much VRAM you need, and settings that are known to work. Every row links to its source.
Trainer support
| Trainer | Status |
|---|
| ai-toolkit | supported (day-0, PR #1078 merged Oct 15; fixes Oct 15) |
| OneTrainer | unknown |
| musubi-tuner | unknown |
| kohya sd-scripts | unknown |
| SimpleTuner | unknown |
VRAM
unknown
Known-good settings
- Open weights, gated on Hugging Face: click 'Agree and access' on the model page or downloads fail with 403
- Early reception mixed; anatomy issues reported [Discord community reports (AI Toolkit / banodoco / lodestone_rock servers), Oct 2026]
- Base model sampling: ~50 steps, CFG 3.5 [Discord community reports (AI Toolkit / banodoco / lodestone_rock servers), Oct 2026]
- LoRA strength ~1.3 at inference [Discord community reports (AI Toolkit / banodoco / lodestone_rock servers), Oct 2026]
- Character LoRAs at default rank 16/32 reported weak [Discord community reports (AI Toolkit / banodoco / lodestone_rock servers), Oct 2026]
General tips
- Gated Hugging Face models: click 'Agree and access' on each model page, or you'll get 403 errors
- Steps scale with dataset size (steps = epochs x images at batch 1)
- Common safe start: LoKr with auto rank (~64), batch/grad accumulation 4 [Discord community reports (AI Toolkit / banodoco / lodestone_rock servers), Oct 2026]
Where to rent a GPU
See cheapest GPU to train a LoRA (RunPod, Vast.ai).
Sources
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Data updated 2026-10-16. Some provider links may be referral links. unknown = not yet verified.