Instructions to use fattis/Darwin-2B-Opus-heretic-GGUF with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use fattis/Darwin-2B-Opus-heretic-GGUF with llama-cpp-python:

# !pip install llama-cpp-python

from llama_cpp import Llama

llm = Llama.from_pretrained(
	repo_id="fattis/Darwin-2B-Opus-heretic-GGUF",
	filename="Darwin-2B-Opus-heretic-Q8_0.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 fattis/Darwin-2B-Opus-heretic-GGUF with llama.cpp:

Install from brew

brew install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama-server -hf fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0
# Run inference directly in the terminal:
llama-cli -hf fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0

Install from WinGet (Windows)

winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama-server -hf fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0
# Run inference directly in the terminal:
llama-cli -hf fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0

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 fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0
# Run inference directly in the terminal:
./llama-cli -hf fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0

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 fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0
# Run inference directly in the terminal:
./build/bin/llama-cli -hf fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0

Use Docker

docker model run hf.co/fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0

LM Studio
Jan

vLLM

How to use fattis/Darwin-2B-Opus-heretic-GGUF with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "fattis/Darwin-2B-Opus-heretic-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": "fattis/Darwin-2B-Opus-heretic-GGUF",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0

Ollama
How to use fattis/Darwin-2B-Opus-heretic-GGUF with Ollama:
```
ollama run hf.co/fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0
```

Unsloth Studio new

How to use fattis/Darwin-2B-Opus-heretic-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 fattis/Darwin-2B-Opus-heretic-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 fattis/Darwin-2B-Opus-heretic-GGUF to start chatting

Using HuggingFace Spaces for Unsloth

# No setup required
# Open https://huggingface.co/spaces/unsloth/studio in your browser
# Search for fattis/Darwin-2B-Opus-heretic-GGUF to start chatting

Pi new

How to use fattis/Darwin-2B-Opus-heretic-GGUF with Pi:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama-server -hf fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0

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": "fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0"
        }
      ]
    }
  }
}

Run Pi

# Start Pi in your project directory:
pi

Hermes Agent new

How to use fattis/Darwin-2B-Opus-heretic-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 fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0

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 fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0

Run Hermes

hermes

Docker Model Runner
How to use fattis/Darwin-2B-Opus-heretic-GGUF with Docker Model Runner:
```
docker model run hf.co/fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0
```

Lemonade

How to use fattis/Darwin-2B-Opus-heretic-GGUF with Lemonade:

Pull the model

# Download Lemonade from https://lemonade-server.ai/
lemonade pull fattis/Darwin-2B-Opus-heretic-GGUF:Q8_0

Run and chat with the model

lemonade run user.Darwin-2B-Opus-heretic-GGUF-Q8_0

List all available models

lemonade list

addansee commited on 3 days ago

Commit

425f1a0

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+---
+license: apache-2.0
+base_model:
+- addansee2/Darwin-2B-Opus-heretic
+tags:
+- darwin
+- darwin-v8
+- opus-distilled
+- qwen3.5
+- reasoning
+- korean
+- claude-opus
+- lora-merged
+- uncensored
+- decensored
+- abliterated
+- heretic
+language:
+- en
+- ko
+- zh
+- ja
+pipeline_tag: text-generation
+---
+* Parameters:
+  * start_layer_index = 1
+  * end_layer_index = 16
+  * preserve_good_behavior_weight = 0.8471
+  * steer_bad_behavior_weight = 0.0003
+  * overcorrect_relative_weight = 0.4130
+  * neighbor_count = 3
+  * KL divergence: 0.0702
+# 🧠 Darwin-2B-Opus
+Claude Opus 4.5/4.6 및 Sonnet 4.6의 추론 스타일을 주입한 Qwen3.5-2B 기반 모델.
+---
+## 🧬 Pedigree
+- 👨 **Father (Base)**: [`Qwen/Qwen3.5-2B`](https://huggingface.co/Qwen/Qwen3.5-2B)
+- 👩 **Mother (LoRA Adapter)**: [`FINAL-Bench/Darwin-2B-Opus-LoRA`](https://huggingface.co/FINAL-Bench/Darwin-2B-Opus-LoRA)
+- 👶 **Child (This model)**: `FINAL-Bench/Darwin-2B-Opus` — merged full-weight standalone