DATASHEET // ONETRAINER
OneTrainer
Modern alternative trainer for SD/SDXL/Flux.
OPEN SOURCE12–24 GB VRAMRuns locally
Actually FreeNo SignupOpen SourceWatermark-FreeHobbyist-OK
Visit OneTrainerUPDATED 2026-04-20 · DIRECT LINK
HARDWARE REQUIREMENTS //
Runs locally · High-end GPU (16–24 GB)
Min VRAM
12 GB
Rec. VRAM
24 GB
Min RAM
32 GB
Rec. RAM
64 GB
Disk
80 GB
GPU class
High-end GPU
CUDA 12.xNo Apple SiliconGPU RequiredQuant: FP16, BF16
SDXL LoRA fits 12 GB. Flux LoRA wants 24 GB.
[ EDITORIAL PICK ]
Why we recommend OneTrainer
- Open source
Source is public — you can audit it, fork it, and you'll never lose access to your workflows if OneTrainer the company changes direction.
- Runs on 12 GB
Comfortable on a mid-range consumer card — no need to remortgage for an A100.
- 2 quant formats
Supports FP16, BF16 — you can dial VRAM use up or down to match your card.
- Beginner-friendly
You don't need to read a paper before getting your first result — sensible defaults and a quick install.
[ EVIDENCE NOTE ]
Documentation-led datasheet
This page summarizes upstream documentation, release information, and editorially reviewed catalogue fields. It is not presented as a hands-on benchmark. Verify changing requirements at the official project; report stale data through our corrections channel.
AT-A-GLANCE SIGNALS //
DERIVED FROM THIS PAGE'S DATA- Install difficultyStandard
A standard local install — download, install dependencies, point at your GPU.
- Hardware comfortMainstream
Needs 12 GB minimum — RTX 3060 12GB or 4070 territory.
- EcosystemActive community
Open source plus 3 community resources we've vetted — there are people to ask.
- VerificationRecent
Catalogue entry last updated 87 days ago — re-verification due soon.
[ COMMUNITY GUIDES & WORKFLOWS ]
Tutorials & deep-dives for OneTrainer
Hand-picked from YouTube, Reddit, GitHub, and the wider web. Each link goes straight to the source — we don't intercept or rewrite anything.
[ MORE IN THIS NICHE ]
Other training & fine-tuning tools we rate
Three picks across different tradeoffs — so you don't end up with three near-clones of OneTrainer.
What is OneTrainer?
OneTrainer is a cleaner, more modern training UI than Kohya for many use cases. Strong concept training, masked training, and presets for SDXL & Flux.
Pros & cons
✓ PROS
- Cleaner UI than Kohya
- Masked training is excellent
- Good docs
– CONS
- Smaller community
- Fewer ready-made configs floating around
What's actually free?
Free / OSS.
✓ Actually FreeNo SignupOpen SourceWatermark-Free