OneTrainer vs musubi-tuner for FLUX.2 klein LoRA training

Both OneTrainer and musubi-tuner can train FLUX.2 klein LoRAs. Here is how they compare, using each project's docs and GitHub activity.

	OneTrainer	musubi-tuner
FLUX.2 klein support	supported	supported
GitHub stars	3247	2107
Last commit	2026-10-19	2026-10-12
Latest release	none published	v0.3.6
VRAM (FLUX.2 klein)	12-16 GB
Overview	GUI + CLI trainer with a broad model list; good VRAM use and speed, but more settings to configure.	kohya's CLI scripts for newer models; supports fp8 base weights and recommends 12 GB+ VRAM for image training.

Which should you pick?

If you want the quickest start with a web UI, pick ai-toolkit. If you already use a script-based trainer's ecosystem, stick with it.

Shared FLUX.2 klein settings

diffusers v0.42.0 (Oct 23, PR #14163) loads LoKr adapters for FLUX.2 and FLUX.2 klein
ComfyUI master (PR #17196) runs the FLUX.2 VAE in fp16: faster, closer to fp32, and no tiled VAE node needed at high resolutions. Your existing VAE file works after updating; don't use bf16 FLUX.2 VAE files

Setup guides

Where to rent a 16 GB+ GPU

Cheapest 16 GB+ cards (2026-10-20 08:06 UTC) from RunPod and Vast.ai. Prices move constantly; see the live price table.

GPU	VRAM	RunPod community $/hr	Vast.ai cheapest $/hr
Tesla V100	16 GB	$0.19	$0.08
RTX 3090	24 GB	$0.22	$0.12
RTX 5060 Ti	16 GB	—	$0.14
Tesla V100S	32 GB	—	$0.14
RTX A5000	24 GB	$0.16	—
RTX A4000	16 GB	$0.17	—

Sources

FAQ

Is OneTrainer or musubi-tuner better for FLUX.2 klein?

Both support it. Pick based on workflow (UI vs scripts) and the notes above.

Can I train FLUX.2 klein LoRAs with OneTrainer?

supported

Can I train FLUX.2 klein LoRAs with musubi-tuner?

supported

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Data updated 2026-10-20. Disclosure: RunPod and Vast.ai links are referral links; ImageLoRA may earn a commission at no cost to you. unknown = no data yet. · Raw data (JSON) · llms.txt