Instructions to use cortexso/sky-t1 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Notebooks
Google Colab
Kaggle
Local Apps Settings

How to use cortexso/sky-t1 with llama.cpp:

Install (macOS, Linux)

curl -LsSf https://llama.app/install.sh | sh
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf cortexso/sky-t1:Q4_K_M
# Run inference directly in the terminal:
llama cli -hf cortexso/sky-t1:Q4_K_M

Install from WinGet (Windows)

winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf cortexso/sky-t1:Q4_K_M
# Run inference directly in the terminal:
llama cli -hf cortexso/sky-t1:Q4_K_M

Use pre-built binary

# Download pre-built binary from:
# https://github.com/ggerganov/llama.cpp/releases
# Start a local OpenAI-compatible server with a web UI:
./llama-server -hf cortexso/sky-t1:Q4_K_M
# Run inference directly in the terminal:
./llama-cli -hf cortexso/sky-t1:Q4_K_M

Build from source code

git clone https://github.com/ggerganov/llama.cpp.git
cd llama.cpp
cmake -B build
cmake --build build -j --target llama-server llama-cli
# Start a local OpenAI-compatible server with a web UI:
./build/bin/llama-server -hf cortexso/sky-t1:Q4_K_M
# Run inference directly in the terminal:
./build/bin/llama-cli -hf cortexso/sky-t1:Q4_K_M

Use Docker

docker model run hf.co/cortexso/sky-t1:Q4_K_M

LM Studio
Jan

vLLM

How to use cortexso/sky-t1 with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "cortexso/sky-t1"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "cortexso/sky-t1",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/cortexso/sky-t1:Q4_K_M

Ollama
How to use cortexso/sky-t1 with Ollama:
```
ollama run hf.co/cortexso/sky-t1:Q4_K_M
```

Unsloth Studio

How to use cortexso/sky-t1 with Unsloth Studio:

Install Unsloth Studio (macOS, Linux, WSL)

curl -fsSL https://unsloth.ai/install.sh | sh
# Run unsloth studio
unsloth studio -H 0.0.0.0 -p 8888
# Then open http://localhost:8888 in your browser
# Search for cortexso/sky-t1 to start chatting

Install Unsloth Studio (Windows)

irm https://unsloth.ai/install.ps1 | iex
# Run unsloth studio
unsloth studio -H 0.0.0.0 -p 8888
# Then open http://localhost:8888 in your browser
# Search for cortexso/sky-t1 to start chatting

Using HuggingFace Spaces for Unsloth

# No setup required
# Open https://huggingface.co/spaces/unsloth/studio in your browser
# Search for cortexso/sky-t1 to start chatting

How to use cortexso/sky-t1 with Pi:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf cortexso/sky-t1:Q4_K_M

Configure the model in Pi

# Install Pi:
npm install -g @mariozechner/pi-coding-agent
# Add to ~/.pi/agent/models.json:
{
  "providers": {
    "llama-cpp": {
      "baseUrl": "http://localhost:8080/v1",
      "api": "openai-completions",
      "apiKey": "none",
      "models": [
        {
          "id": "cortexso/sky-t1:Q4_K_M"
        }
      ]
    }
  }
}

Run Pi

# Start Pi in your project directory:
pi

Hermes Agent new

How to use cortexso/sky-t1 with Hermes Agent:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf cortexso/sky-t1:Q4_K_M

Configure Hermes

# Install Hermes:
curl -fsSL https://hermes-agent.nousresearch.com/install.sh | bash
hermes setup
# Point Hermes at the local server:
hermes config set model.provider custom
hermes config set model.base_url http://127.0.0.1:8080/v1
hermes config set model.default cortexso/sky-t1:Q4_K_M

Run Hermes

hermes

Atomic Chat new

OpenClaw new

How to use cortexso/sky-t1 with OpenClaw:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf cortexso/sky-t1:Q4_K_M

Configure OpenClaw

# Install OpenClaw:
npm install -g openclaw@latest
# Register the local server and set it as the default model:
openclaw onboard --non-interactive --mode local \
  --auth-choice custom-api-key \
  --custom-base-url http://127.0.0.1:8080/v1 \
  --custom-model-id "cortexso/sky-t1:Q4_K_M" \
  --custom-provider-id llama-cpp \
  --custom-compatibility openai \
  --custom-text-input \
  --accept-risk \
  --skip-health

Run OpenClaw

openclaw agent --local --agent main --message "Hello from Hugging Face"

Docker Model Runner
How to use cortexso/sky-t1 with Docker Model Runner:
```
docker model run hf.co/cortexso/sky-t1:Q4_K_M
```

Lemonade

How to use cortexso/sky-t1 with Lemonade:

Pull the model

# Download Lemonade from https://lemonade-server.ai/
lemonade pull cortexso/sky-t1:Q4_K_M

Run and chat with the model

lemonade run user.sky-t1-Q4_K_M

List all available models

lemonade list

sky-t1

File size: 1,852 Bytes

---
license: apache-2.0
pipeline_tag: text-generation
tags:
- cortex.cpp
---
## Overview

**NovaSky Team** developed and released the [Sky-T1](https://huggingface.co/novasky-ai/Sky-T1-32B-Preview), a 32-billion parameter reasoning model adapted from Qwen2.5-32B-Instruct. This model is designed for advanced reasoning, coding, and mathematical tasks, achieving performance comparable to state-of-the-art models like o1-preview while being cost-efficient. Sky-T1 was trained on 17K verified responses from Qwen/QwQ-32B-Preview, with additional science data from the Still-2 dataset, ensuring high-quality and diverse learning sources.

The model supports complex reasoning via long chain-of-thought processes and excels in both coding and mathematical challenges. Utilizing Llama-Factory with DeepSpeed Zero-3 Offload, Sky-T1 training was completed in just 19 hours on 8 H100 GPUs, demonstrating efficient resource utilization. These capabilities make Sky-T1 an exceptional tool for applications in programming, academic research, and reasoning-intensive tasks.

## Variants

| No | Variant | Cortex CLI command |
| --- | --- | --- |
| 1 | [Sky-t1-32b](https://huggingface.co/cortexso/sky-t1/tree/32b) | `cortex run sky-t1:32b` |

## Use it with Jan (UI)

1. Install **Jan** using [Quickstart](https://jan.ai/docs/quickstart)
2. Use in Jan model Hub:
    ```bash
    cortexso/sky-t1
    ```

## Use it with Cortex (CLI)

1. Install **Cortex** using [Quickstart](https://cortex.jan.ai/docs/quickstart)
2. Run the model with command:
    ```bash
    cortex run sky-t1
    ```

## Credits

- **Author:** NovaSky Team
- **Converter:** [Homebrew](https://www.homebrew.ltd/)
- **Original License:** [License](https://choosealicense.com/licenses/apache-2.0/)
- **Papers:** [Sky-T1: Fully Open-Source Reasoning Model](https://novasky-ai.github.io/posts/sky-t1/)