Instructions to use nicolasembleton/context-1-GGUF with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use nicolasembleton/context-1-GGUF with llama-cpp-python:

# !pip install llama-cpp-python

from llama_cpp import Llama

llm = Llama.from_pretrained(
	repo_id="nicolasembleton/context-1-GGUF",
	filename="context-1-BF16.gguf",
)

llm.create_chat_completion(
	messages = [
		{
			"role": "user",
			"content": "What is the capital of France?"
		}
	]
)

Notebooks
Google Colab
Kaggle
Local Apps

llama.cpp

How to use nicolasembleton/context-1-GGUF with llama.cpp:

Install from brew

brew install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama-server -hf nicolasembleton/context-1-GGUF:Q4_K_M
# Run inference directly in the terminal:
llama-cli -hf nicolasembleton/context-1-GGUF:Q4_K_M

Install from WinGet (Windows)

winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama-server -hf nicolasembleton/context-1-GGUF:Q4_K_M
# Run inference directly in the terminal:
llama-cli -hf nicolasembleton/context-1-GGUF: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 nicolasembleton/context-1-GGUF:Q4_K_M
# Run inference directly in the terminal:
./llama-cli -hf nicolasembleton/context-1-GGUF: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 nicolasembleton/context-1-GGUF:Q4_K_M
# Run inference directly in the terminal:
./build/bin/llama-cli -hf nicolasembleton/context-1-GGUF:Q4_K_M

Use Docker

docker model run hf.co/nicolasembleton/context-1-GGUF:Q4_K_M

LM Studio
Jan

vLLM

How to use nicolasembleton/context-1-GGUF with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "nicolasembleton/context-1-GGUF"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "nicolasembleton/context-1-GGUF",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/nicolasembleton/context-1-GGUF:Q4_K_M

Ollama
How to use nicolasembleton/context-1-GGUF with Ollama:
```
ollama run hf.co/nicolasembleton/context-1-GGUF:Q4_K_M
```

Unsloth Studio new

How to use nicolasembleton/context-1-GGUF 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 nicolasembleton/context-1-GGUF 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 nicolasembleton/context-1-GGUF to start chatting

Using HuggingFace Spaces for Unsloth

# No setup required
# Open https://huggingface.co/spaces/unsloth/studio in your browser
# Search for nicolasembleton/context-1-GGUF to start chatting

Pi new

How to use nicolasembleton/context-1-GGUF with Pi:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama-server -hf nicolasembleton/context-1-GGUF: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": "nicolasembleton/context-1-GGUF:Q4_K_M"
        }
      ]
    }
  }
}

Run Pi

# Start Pi in your project directory:
pi

Hermes Agent new

How to use nicolasembleton/context-1-GGUF with Hermes Agent:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama-server -hf nicolasembleton/context-1-GGUF: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 nicolasembleton/context-1-GGUF:Q4_K_M

Run Hermes

hermes

Docker Model Runner
How to use nicolasembleton/context-1-GGUF with Docker Model Runner:
```
docker model run hf.co/nicolasembleton/context-1-GGUF:Q4_K_M
```

Lemonade

How to use nicolasembleton/context-1-GGUF with Lemonade:

Pull the model

# Download Lemonade from https://lemonade-server.ai/
lemonade pull nicolasembleton/context-1-GGUF:Q4_K_M

Run and chat with the model

lemonade run user.context-1-GGUF-Q4_K_M

List all available models

lemonade list

Context-1 GGUF Quantizations

GGUF quantized versions of chromadb/context-1, converted for inference with llama.cpp, LM Studio, and other GGUF-compatible engines.

About Context-1

Context-1 is a 20.9B parameter Mixture-of-Experts (MoE) causal language model developed by Chroma. It uses the GptOssForCausalLM architecture with 32 experts and 4 active per token, providing strong performance with efficient inference.

Detail	Value
Architecture	GptOssForCausalLM (MoE)
Total Parameters	~20.9B
Active Parameters	~3B per token (4 of 32 experts)
Hidden Size	2880
License	Apache-2.0

Quantization

Quantized from F16 weights using llama.cpp with importance matrix (imatrix) calibration, running on NVIDIA H100 GPUs via Modal. All standard K-quant and I-quant variants are provided.

Usage

llama.cpp

# Download your preferred quant
huggingface-cli download nicolasembleton/context-1-GGUF context-1-Q4_K_M.gguf --local-dir .

# Run
./llama-cli -m context-1-Q4_K_M.gguf -p "Your prompt here" -ngl 99

LM Studio

Search for nicolasembleton/context-1-GGUF in LM Studio's model browser and download the desired quantization.

Python (llama-cpp-python)

from llama_cpp import Llama

llm = Llama.from_pretrained(
    repo_id="nicolasembleton/context-1-GGUF",
    filename="context-1-Q4_K_M.gguf",
    n_gpu_layers=-1,
)

response = llm.create_chat_completion(
    messages=[{"role": "user", "content": "Hello!"}]
)
print(response)

Chat Template

This model uses a custom chat template based on the OpenAI/Oss architecture with support for multi-channel output (analysis, commentary, final), tool calling, and built-in browser/python tools. The template is embedded in the GGUF files.

Format overview:

<|start|>system<|message|>...<|end|>
<|start|>developer<|message|>...<|end|>
<|start|>user<|message|>...<|end|>
<|start|>assistant<|channel|>final<|message|>...<|end|>

For the full template, see chat_template.jinja in the original repository.

License

Apache-2.0 — same as the original model.

Acknowledgements

Chroma for the original model
llama.cpp for the quantization tooling
Modal for the GPU compute infrastructure

Downloads last month: 606

GGUF

Model size

21B params

Architecture

gpt-oss

Hardware compatibility

1-bit

2-bit

3-bit

4-bit

5-bit

6-bit

8-bit

16-bit

Model tree for nicolasembleton/context-1-GGUF

Base model

openai/gpt-oss-20b

Finetuned

chromadb/context-1

Quantized

(7)

this model