- Python 71.5%
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- Rust 1.5%
- Other 0.7%
* Studio: per-session cost calculator + /api/providers/pricing endpoint Neither the Anthropic Messages API nor the OpenAI Responses API reports a `cost` field on the response. Both expose detailed token counts (input, output, cache hits, server-tool invocations); pricing multipliers live in the provider docs. The frontend's "cost so far" display was impossible without scraping the server log. Land the math + a snapshot endpoint so the cost calculator can run client-side from the existing usage chunk plumbing. The actual UI hookup belongs in a frontend follow-up (and is gated on PR #5670's usage-chunk emission landing so the frontend sees the usage block in the first place). Changes: - New `core/inference/pricing.py` with: - Per-MTok base pricing tables for every active Anthropic and gpt-5.x family member. Dated snapshots inherit the canonical-id price via prefix match so future snapshots cost the same as the canonical id until pricing changes. - Shared multipliers for Anthropic cache writes (5m: 1.25x, 1h: 2x) and reads (0.1x); OpenAI cache reads (0.1x); Anthropic server tool surcharges ($10 / 1k web_search, $0.05 / hour code_exec beyond the 50-hour daily free tier). - `calculate_cost(provider, model, usage)` returns a per-turn USD breakdown plus billable token counts, with priced=False for unknown models so the UI can still render token counts. - `pricing_snapshot()` returns the whole table for the frontend so it doesn't re-implement the multipliers. - New `GET /api/providers/pricing` returning the snapshot, scoped behind the existing auth dependency. - New `backend/tests/test_pricing.py` with 12 cases pinning the math against documented values: base input/output multiplication, 5m / 1h / read multipliers, default-to-5m fallback when the breakdown is absent, web_search per-1k pricing, code_execution per-hour pricing, dated-snapshot fallback, OpenAI cache-read discount accounting (cached tokens subtracted from full-price bucket and re-billed at 0.1x), unknown model graceful-degrade, and the snapshot endpoint shape. * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Studio: verified OpenAI pricing + fix billable input double-count Address the cost-calculator review: - OpenAI prices were 2-6x under the actual published rates. Cross-checked the live developers.openai.com/api/docs/pricing page and replaced every entry. gpt-5.5 is 5/30, gpt-5.5-pro is 30/180, gpt-5.4 is 2.5/15, gpt-5.4-mini 0.75/4.5, gpt-5.4-nano 0.20/1.25, gpt-5.3-codex 1.75/14. Added chat-latest alias to the canonical chat-snapshot rate. Dropped o3 / o4 / gpt-4.5 rows that are no longer listed on the page; calculator returns priced=False instead of silently billing at zero. - billable_input_tokens was double-counting cached tokens for OpenAI. Anthropic excludes cache_* buckets from input_tokens so we add them; OpenAI folds cache_read_input_tokens into input_tokens already, so the tooltip read 1.8M for a 1.0M bill. Branched the math by provider and added a regression test. Sourcing notes in the module docstring updated. * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Address review: canonical 4.5 ids, long-context tier, OpenAI tool fees Three Codex P1 follow-ups on the cost calculator: 1. Canonical Anthropic 4.5 ids missing from ANTHROPIC_PRICING. claude-opus-4-5 / claude-sonnet-4-5 / claude-haiku-4-5 (no date suffix) are the ids used by backend defaults (PROVIDER_REGISTRY['anthropic'].default_models), but the table only had the dated forms. _lookup's prefix fallback doesn't help because the canonical id is SHORTER than the dated key, so str.startswith goes the wrong way and the calculator returned priced=False + zero cost. Added the canonical aliases for opus-4-5, sonnet-4-5, haiku-4-5, and opus-4-1. 2. OpenAI long-context tier. gpt-5.5 and gpt-5.4 cross over at 272k input tokens to a 2x input / 1.5x output rate (gpt-5.5: $5/$30 -> $10/$45; gpt-5.4: $2.50/$15 -> $5/$22.50). Turns past the threshold were systematically undercounted at headline rates. Added long_context_threshold / long_context_input_per_mtok / long_context_output_per_mtok columns and a tier-selection step in calculate_cost; model_priced gains a "(long-context >272000)" suffix when the higher tier applies so the tooltip can show which rate was used. gpt-5.5-pro / gpt-5.4-pro / mini / nano / codex have no published long-context tier today, so they keep a single rate. 3. OpenAI server-tool surcharges. web_search is $10/1000 calls and the hosted shell container is $0.03 per 20-minute session on the default 1g tier (~$0.09/hr). server_tools_usd was previously stuck at 0.0 for OpenAI even when web_search and shell tools fired, so sessions with tool use understated cost. Added OPENAI_WEB_SEARCH_USD_PER_1K and OPENAI_CONTAINER_USD_PER_HOUR constants plus a parallel of the Anthropic surcharge block that reads counts from usage["openai_tool_use"]. The SSE translator wires the counts in a follow-up commit; the calculator is now ready for them. pricing_snapshot also exposes both constants so the frontend tooltip can render the per-call rate. Existing tests updated to stay in the short-context tier where they were testing base rates; new tests pin canonical 4.5 lookups, long-context crossover on gpt-5.5/gpt-5.4, the absence of crossover on mini/nano/codex, and OpenAI tool surcharges (web_search, container hours, combined total). * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> |
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| unsloth | ||
| unsloth_cli | ||
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| .pre-commit-ci.yaml | ||
| .pre-commit-config.yaml | ||
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| CODE_OF_CONDUCT.md | ||
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| unsloth-cli.py | ||
Unsloth Studio lets you run and train models locally.
Features • Quickstart • Notebooks • Documentation
⚡ 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
- Search + download + run models including GGUF, LoRA adapters, safetensors
- Export models: Save or export models to GGUF, 16-bit safetensors and other formats.
- Tool calling: Support for self-healing tool calling and web search
- Code execution: lets LLMs test code in Claude artifacts and sandbox environments
- API inference endpoint: Deploy and run local LLMs in Claude Code, Codex tools with Unsloth
- Auto set inference settings and customize chat templates.
- We work directly with teams behind gpt-oss, Qwen3, Llama 4, Mistral, Gemma 1-3, and Phi-4, where we’ve fixed bugs that improve model accuracy.
- Chat with images, audio, PDFs, code, DOCX and more. Connect API providers (OpenAI, Anthropic) or servers (vLLM, Ollama).
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 |
- See all our notebooks for: Kaggle, GRPO, TTS, embedding & Vision
- See all our models and all our notebooks
- See detailed documentation for Unsloth here
🦥 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 Google’s 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. Blog • Notebooks
- 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 Blog • Vision 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\
💚 Community and Links
| Type | Links |
|---|---|
| Join Discord server | |
| Join Reddit community | |
| 📚 Documentation & Wiki | Read Our Docs |
| 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!