Unsloth is a local UI for training and running Gemma 4, Qwen3.6, DeepSeek, Kimi, GLM and other models. https://unsloth.ai/docs
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Daniel Han-Chen 04de106e49 Fix/adjust diffusion: round 6 race-free lifecycle + delete guards for PR #5754
Round 6 reviewers identified several races between load / unload /
generate and several fail-open delete guards. This commit closes
them by widening the lock scope, publishing the pending load
target through status(), and switching delete guards to
fail-closed.

Lifecycle (P1)
  * core/inference/diffusion.py: load_model now also takes
    _generate_lock. Previous behavior released and reallocated the
    pipeline while a generation forward was still iterating
    denoising steps, corrupting scheduler state and stacking VRAM.
    The forward only briefly touches _lock, so taking it on the
    load path does not introduce a deadlock.
  * core/inference/diffusion.py: unload_model now also takes
    _generate_lock. Without it, /images/unload returned
    is_loaded=False while a slow forward was still running, which
    let chat / training / export handoffs allocate VRAM on top of
    the still-resident pipeline.
  * core/inference/diffusion.py: previous pipeline release now
    happens BEFORE from_single_file / from_pretrained. Switching
    FLUX.2 klein 4B -> 9B on a 16-24 GB GPU was failing because
    the new transformer allocation overlapped the old pipe's
    residency.
  * core/inference/diffusion.py: failed pipeline from_pretrained
    now explicitly releases the just-loaded transformer; previously
    its weights stayed pinned to GPU until GC and made the next
    load more likely to OOM.

Pending-target / delete guards (P1)
  * core/inference/diffusion.py: load_model now publishes
    _pending_repo_id / _pending_base_repo / _pending_gguf_filename
    under _lock at the start of the call (and refreshes
    _pending_base_repo when the smart-base / repo defaults resolve).
    status() exposes those as 'repo_id' / 'base_repo' /
    'gguf_filename' during is_loading=True so delete guards can see
    the target before _repo_id is set on success.
  * routes/models.py /delete-cached + /delete-finetuned: diffusion
    status check now fails CLOSED (HTTP 503) when status() raises.
    Both guards previously logged and continued, which could let a
    delete proceed against a repo whose status was unverifiable.
  * routes/models.py: is_loading is also blocked on both guards
    so a mid-download / mid-from_pretrained rmtree is refused.

Symmetric handoffs (P1)
  * routes/export.py: /load-checkpoint now refuses with HTTP 409
    when training is active instead of calling stop_training().
    Chat and /images/load did the same after round 5; export was
    the remaining asymmetry that would silently kill a long
    training run.
  * routes/training.py, routes/inference.py (GGUF and standard
    chat), routes/export.py: diffusion handoff now treats
    is_loading as is_loaded. The diffusion backend's unload waits
    on _load_lock + _generate_lock so an in-flight load completes
    first.

Requirements (P1)
  * requirements/studio.txt: pin python-multipart explicitly. The
    Studio routes package's eager router imports include
    routes/datasets.py whose FastAPI UploadFile/File validation
    crashes with RuntimeError without it in fresh test envs.

Frontend (P2)
  * features/images/api.ts + images-page.tsx: seed handling now
    accepts the full [-2^63, 2^64 - 1] range via BigInt. The
    previous safe-integer cap rejected valid uint64 seeds the
    backend accepts. A small stringify helper emits BigInts as JSON
    integers without touching the rest of the payload.

Tests
  * test_diffusion_routes.py: load routes/inference.py via
    importlib.spec_from_file_location to avoid triggering
    routes/__init__.py (which would pull in training / datasets /
    data_recipe imports unrelated to diffusion tests).
  * test_diffusion_backend.py: status() during is_loading shows
    pending repo + base; unload waits for in-flight generation.
2026-05-25 01:28:04 +00:00
.github ci: unblock Studio Windows + Linux + Mac smoke (#5741) 2026-05-23 06:59:16 -07:00
images images: use narrower Discord button and drop duplicate (#5552) 2026-05-18 05:00:59 -07:00
scripts Move uninstall scripts into scripts/ and fix references (#5644) 2026-05-20 04:42:03 -07:00
studio Fix/adjust diffusion: round 6 race-free lifecycle + delete guards for PR #5754 2026-05-25 01:28:04 +00:00
tests ci: broaden Linux + narrow Windows llama.cpp runtime patterns + trim #5741 comments (#5746) 2026-05-23 21:48:12 -07:00
unsloth Lower default weight_decay in RL config from 0.01 to 0.001 (#5747) 2026-05-23 22:28:59 -07:00
unsloth_cli studio: regenerate desktop launcher on unsloth studio update (macOS + Linux + Windows) (#5577) 2026-05-19 05:49:10 -07:00
.gitattributes EOL LF (unix line endings) normalization (#3478) 2025-10-17 16:22:42 -07:00
.gitignore ci: advisory lockfile supply-chain audit (no install-script changes) (#5604) 2026-05-19 05:56:56 -07:00
.pre-commit-ci.yaml pre-commit CI config (#3565) 2025-11-07 14:44:18 -08:00
.pre-commit-config.yaml [pre-commit.ci] pre-commit autoupdate (#5586) 2026-05-18 22:57:43 -07:00
build.sh Add Studio web update banner and release version display (#5308) 2026-05-11 18:24:01 +04:00
cli.py Rename cli/ to unsloth_cli/ to fix namespace collision with stringzilla (#4393) 2026-03-17 20:40:21 -07:00
CODE_OF_CONDUCT.md Update CODE_OF_CONDUCT.md 2025-10-25 19:31:05 -07:00
CONTRIBUTING.md Revert "Improve documentation on how to export model from Colab" 2026-03-13 22:38:41 -07:00
COPYING Rename cli/ to unsloth_cli/ to fix namespace collision with stringzilla (#4393) 2026-03-17 20:40:21 -07:00
install.ps1 ci: broaden Linux + narrow Windows llama.cpp runtime patterns + trim #5741 comments (#5746) 2026-05-23 21:48:12 -07:00
install.sh ci: broaden Linux + narrow Windows llama.cpp runtime patterns + trim #5741 comments (#5746) 2026-05-23 21:48:12 -07:00
LICENSE Rename cli/ to unsloth_cli/ to fix namespace collision with stringzilla (#4393) 2026-03-17 20:40:21 -07:00
pyproject.toml API fixes + pypi 2026-05-22 09:16:53 -07:00
README.md Adding Connect a Provider README changes 2026-05-21 05:08:59 -07:00
unsloth-cli.py Merge pull request #3612 from Vangmay/feature/raw-text-dataprep 2026-01-08 03:38:15 -08:00

Unsloth logo

Unsloth Studio lets you run and train models locally.

FeaturesQuickstartNotebooksDocumentation


unsloth studio ui homepage

Get started

macOS, Linux, WSL:

curl -fsSL https://unsloth.ai/install.sh | sh

Windows:

irm https://unsloth.ai/install.ps1 | iex

Community:

Features

Unsloth Studio (Beta) lets you run and train text, audio, embedding, vision models on Windows, Linux and macOS.

Inference

Training

  • Train and RL 500+ models up to 2x faster with up to 70% less VRAM, with no accuracy loss.
  • Custom Triton and mathematical kernels. See some collabs we did with PyTorch and Hugging Face.
  • Data Recipes: Auto-create datasets from PDF, CSV, DOCX etc. Edit data in a visual-node workflow.
  • Reinforcement Learning (RL): The most efficient RL library, using 80% less VRAM for GRPO, FP8 etc.
  • Supports full fine-tuning, RL, pretraining, 4-bit, 16-bit and, FP8 training.
  • Observability: Monitor training live, track loss and GPU usage and customize graphs.
  • Multi-GPU training is supported, with major improvements coming soon.

📥 Install

Unsloth can be used in two ways: through Unsloth Studio, the web UI, or through Unsloth Core, the code-based version. Each has different requirements.

Unsloth Studio (web UI)

Unsloth Studio (Beta) works on Windows, Linux, WSL and macOS.

  • CPU: Supported for Chat and Data Recipes currently
  • NVIDIA: Training works on RTX 30/40/50, Blackwell, DGX Spark, Station and more
  • macOS: Training, MLX and GGUF inference are ALL supported.
  • AMD: Chat + Data works. Train with Unsloth Core. Studio support is out soon.
  • Multi-GPU: Available now, with a major upgrade on the way

macOS, Linux, WSL:

curl -fsSL https://unsloth.ai/install.sh | sh

Windows:

irm https://unsloth.ai/install.ps1 | iex

Launch

unsloth studio -p 8888

For cloud or global access, add -H 0.0.0.0. By default, Unsloth is accessible only locally.

Update

To update, use the same install commands above or use unsloth studio update.

Docker

Use our Docker image unsloth/unsloth container. Run:

docker run -d -e JUPYTER_PASSWORD="mypassword" \
  -p 8888:8888 -p 8000:8000 -p 2222:22 \
  -v $(pwd)/work:/workspace/work \
  --gpus all \
  unsloth/unsloth

Developer, Nightly, Uninstall

To see developer, nightly and uninstallation etc. instructions, see advanced installation.

Unsloth Core (code-based)

Linux, WSL:

curl -LsSf https://astral.sh/uv/install.sh | sh
uv venv unsloth_env --python 3.13
source unsloth_env/bin/activate
uv pip install unsloth --torch-backend=auto

Windows:

winget install -e --id Python.Python.3.13
winget install --id=astral-sh.uv  -e
uv venv unsloth_env --python 3.13
.\unsloth_env\Scripts\activate
uv pip install unsloth --torch-backend=auto

For Windows, pip install unsloth works only if you have PyTorch installed. Read our Windows Guide. You can use the same Docker image as Unsloth Studio.

AMD, Intel:

For RTX 50x, B200, 6000 GPUs: uv pip install unsloth --torch-backend=auto. Read our guides for: Blackwell and DGX Spark.
To install Unsloth on AMD and Intel GPUs, follow our AMD Guide and Intel Guide.

📒 Free Notebooks

Train for free with our notebooks. You can use our new free Unsloth Studio notebook to run and train models for free in a web UI. Read our guide. Add dataset, run, then deploy your trained model.

Model Free Notebooks Performance Memory use
Gemma 4 (E2B) ▶️ Start for free 1.5x faster 50% less
Qwen3.5 (4B) ▶️ Start for free 1.5x faster 60% less
gpt-oss (20B) ▶️ Start for free 2x faster 70% less
Qwen3.5 GSPO ▶️ Start for free 2x faster 70% less
gpt-oss (20B): GRPO ▶️ Start for free 2x faster 80% less
Qwen3: Advanced GRPO ▶️ Start for free 2x faster 70% less
embeddinggemma (300M) ▶️ Start for free 2x faster 20% less
Mistral Ministral 3 (3B) ▶️ Start for free 1.5x faster 60% less
Llama 3.1 (8B) Alpaca ▶️ Start for free 2x faster 70% less
Llama 3.2 Conversational ▶️ Start for free 2x faster 70% less
Orpheus-TTS (3B) ▶️ Start for free 1.5x faster 50% less

🦥 Unsloth News

  • Connections: Connect any API provider (OpenAI, Anthropic) or server (vLLM, Ollama). Guide
  • MTP: Run Qwen3.6 MTP in Unsloth. MTP settings are autoset specific to your hardware. Guide
  • API inference endpoint: Deploy and run local LLMs in Claude Code, Codex tools. Guide
  • Qwen3.6: Qwen3.6-35B-A3B can now be trained and run in Unsloth Studio. Blog
  • Gemma 4: Run and train Googles new models directly in Unsloth. Blog
  • Introducing Unsloth Studio: our new web UI for running and training LLMs. Blog
  • Qwen3.5 - 0.8B, 2B, 4B, 9B, 27B, 35-A3B, 112B-A10B are now supported. Guide + notebooks
  • Train MoE LLMs 12x faster with 35% less VRAM - DeepSeek, GLM, Qwen and gpt-oss. Blog
  • Embedding models: Unsloth now supports ~1.8-3.3x faster embedding fine-tuning. BlogNotebooks
  • New 7x longer context RL vs. all other setups, via our new batching algorithms. Blog
  • New RoPE & MLP Triton Kernels & Padding Free + Packing: 3x faster training & 30% less VRAM. Blog
  • 500K Context: Training a 20B model with >500K context is now possible on an 80GB GPU. Blog
  • FP8 & Vision RL: You can now do FP8 & VLM GRPO on consumer GPUs. FP8 BlogVision RL

📥 Advanced Installation

The below advanced instructions are for Unsloth Studio. For Unsloth Core advanced installation, view our docs.

Developer installs: macOS, Linux, WSL:

git clone https://github.com/unslothai/unsloth
cd unsloth
./install.sh --local
unsloth studio -p 8888

Then to update :

unsloth studio update

Developer installs: Windows PowerShell:

git clone https://github.com/unslothai/unsloth.git
cd unsloth
Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass
.\install.ps1 --local
unsloth studio -p 8888

Then to update :

unsloth studio update

Nightly: MacOS, Linux, WSL:

git clone https://github.com/unslothai/unsloth
cd unsloth
git checkout nightly
./install.sh --local
unsloth studio -p 8888

Then to launch every time:

unsloth studio -p 8888

Nightly: Windows:

Run in Windows Powershell:

git clone https://github.com/unslothai/unsloth.git
cd unsloth
git checkout nightly
Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass
.\install.ps1 --local
unsloth studio -p 8888

Then to launch every time:

unsloth studio -p 8888

Uninstall

The recommended way to fully remove Unsloth Studio is the matching uninstall script for your OS. It stops any running servers, removes the install dir, the launcher data dir, the desktop shortcut, and any platform-specific entries (macOS .app bundle + Launch Services on Mac; Start Menu, HKCU\Software\Unsloth registry key and user PATH entries on Windows):

  • MacOS, WSL, Linux: curl -fsSL https://raw.githubusercontent.com/unslothai/unsloth/main/scripts/uninstall.sh | sh
  • Windows (PowerShell): irm https://raw.githubusercontent.com/unslothai/unsloth/main/scripts/uninstall.ps1 | iex

If you only want to drop the install dir and keep the launcher/shortcut for a later reinstall, you can instead run rm -rf ~/.unsloth/studio (Mac/Linux/WSL) or Remove-Item -Recurse -Force "$HOME\.unsloth\studio" (Windows). The model cache at ~/.cache/huggingface is not touched by any of these.

For more info, see our docs.

Deleting model files

You can delete old model files either from the bin icon in model search or by removing the relevant cached model folder from the default Hugging Face cache directory. By default, HF uses:

  • MacOS, Linux, WSL: ~/.cache/huggingface/hub/
  • Windows: %USERPROFILE%\.cache\huggingface\hub\
Type Links
  Discord Join Discord server
  r/unsloth Reddit Join Reddit community
📚 Documentation & Wiki Read Our Docs
  Twitter (aka X) Follow us on X
🔮 Our Models Unsloth Catalog
✍️ Blog Read our Blogs

Citation

You can cite the Unsloth repo as follows:

@software{unsloth,
  author = {Daniel Han, Michael Han and Unsloth team},
  title = {Unsloth},
  url = {https://github.com/unslothai/unsloth},
  year = {2023}
}

If you trained a model with 🦥Unsloth, you can use this cool sticker!  

License

Unsloth uses a dual-licensing model of Apache 2.0 and AGPL-3.0. The core Unsloth package remains licensed under Apache 2.0, while certain optional components, such as the Unsloth Studio UI are licensed under the open-source license AGPL-3.0.

This structure helps support ongoing Unsloth development while keeping the project open source and enabling the broader ecosystem to continue growing.

Thank You to

  • The llama.cpp library that lets users run and save models with Unsloth
  • The Hugging Face team and their libraries: transformers and TRL
  • The Pytorch and Torch AO team for their contributions
  • NVIDIA for their NeMo DataDesigner library and their contributions
  • And of course for every single person who has contributed or has used Unsloth!