Instructions to use maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF with llama-cpp-python:

# !pip install llama-cpp-python

from llama_cpp import Llama

llm = Llama.from_pretrained(
	repo_id="maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF",
	filename="Tess-4-27B-ROCmFP4_FAST.gguf",
)

llm.create_chat_completion(
	messages = "No input example has been defined for this model task."
)

Notebooks
Google Colab
Kaggle
Local Apps Settings

llama.cpp

How to use maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF 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 maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF
# Run inference directly in the terminal:
llama cli -hf maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF

Install from WinGet (Windows)

winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF
# Run inference directly in the terminal:
llama cli -hf maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF

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 maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF
# Run inference directly in the terminal:
./llama-cli -hf maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF

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 maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF
# Run inference directly in the terminal:
./build/bin/llama-cli -hf maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF

Use Docker

docker model run hf.co/maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF

LM Studio
Jan
Ollama
How to use maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF with Ollama:
```
ollama run hf.co/maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF
```

Unsloth Studio

How to use maczzzzzz/Tess-4-27B-ROCmFP4_FAST-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 maczzzzzz/Tess-4-27B-ROCmFP4_FAST-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 maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF to start chatting

Using HuggingFace Spaces for Unsloth

# No setup required
# Open https://huggingface.co/spaces/unsloth/studio in your browser
# Search for maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF to start chatting

How to use maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF with Pi:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF

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": "maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF"
        }
      ]
    }
  }
}

Run Pi

# Start Pi in your project directory:
pi

Hermes Agent new

How to use maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF with Hermes Agent:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF

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 maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF

Run Hermes

hermes

Atomic Chat new

OpenClaw new

How to use maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF with OpenClaw:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF

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 "maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF" \
  --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 maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF with Docker Model Runner:
```
docker model run hf.co/maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF
```

Lemonade

How to use maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF with Lemonade:

Pull the model

# Download Lemonade from https://lemonade-server.ai/
lemonade pull maczzzzzz/Tess-4-27B-ROCmFP4_FAST-GGUF

Run and chat with the model

lemonade run user.Tess-4-27B-ROCmFP4_FAST-GGUF-{{QUANT_TAG}}

List all available models

lemonade list

Tess-4-27B ROCmFP4_FAST — GGUF

ROCmFP4_FAST quant of migtissera/Tess-4-27B (Apache 2.0), produced via charlie12345/ROCmFPX's ROCm fork. Tess-4-27B is a Qwen3.6-27B fine-tune. Weights: 14 GB, ~3.8 bpw ROCmFP4_FAST preset. Companion TQ3_4S quant for Blackwell CUDA is in a separate repo.

File

File	Size	Quant	BPW
`Tess-4-27B-ROCmFP4_FAST.gguf`	14 GB	ROCmFP4_FAST (charlie12345)	~3.8 bpw

NOT a stock llama.cpp quant

ROCmFP4_FAST is a custom weight format unique to charlie12345/ROCmFPX. Stock llama.cpp and the nixpkgs llama-cpp package will exit with unknown quantization at load time. Use the llama-server/llama-cli from the ROCmFPX fork.

Scope of these benchmarks — read this first

These numbers are a light baseline, not a thorough ROCmFPX evaluation. The mesh's bench framework is built for production agent workload regression-detection on the local stack, not for the kind of multi-axis sweep that upstream quant maintainers typically publish. Specifically:

Harness scope is bounded. Numbers come from production inference throughput monitoring and the mesh's 6-test regression suite (mesh_eval). That's a regression suite, not a quality benchmark.
Sample sizes are small. Single GPU, single rep. None are powered for statistical significance.
No perplexity / wikitext / MMLU / GSM8K. The mesh's stack isn't a quality benchmark.
Single GPU class (RDNA4 16 GB). All measurements on an AMD RX 9060 XT 16 GB (gfx1200, ROCm 7.x). No Blackwell, no CDNA, no multi-GPU. Cross-hardware generalization is NOT implied.
No human eval. "Loads, runs, doesn't break the agent stack" is not a quality verdict on this specific quant.

What this IS good for: a quick signal that the quant (a) loads on RDNA4, (b) runs at production-usable throughput, (c) doesn't break the mesh's agent tool-calling. What this is NOT good for: claiming "this is the best quant of this model," reproducing academic benchmark results, or substituting for upstream's validation work.

For a rigorous view, see migtissera/Tess-4-27B (parent model) and charlie12345/ROCmFPX (quantizer).

Quick start

# Build charlie12345/ROCmFPX (ROCm fork)
git clone https://github.com/charlie12345/ROCmFPX
cd ROCmFPX
mkdir build && cd build
cmake .. -DGGML_HIP=ON -DAMDGPU_TARGETS=gfx1200
make -j$(nproc)

# Serve
llama-server \
  -m Tess-4-27B-ROCmFP4_FAST.gguf \
  --host 0.0.0.0 --port 8081 \
  -ngl 99 -c 65536 -t 12 \
  -ctk q4_0 -ctv q4_0 \
  -fa on --cache-ram 0 --no-cache-prompt \
  -np 1 --batch-size 512 --ubatch-size 128 \
  --jinja --metrics -rea off

Reproduce the quant

# Requires the ROCmFPX fork and the F16 source GGUF
llama-quantize --allow-requantize tess-4-27b-f16.gguf \
  Tess-4-27B-ROCmFP4_FAST.gguf Q4_0_ROCMFP4_FAST

Files in this repo

File	Description
`Tess-4-27B-ROCmFP4_FAST.gguf`	The quantized model (LFS-tracked)
`README.md`	This model card

What's NOT in this repo (caveats)

Stock llama.cpp will not load this file. ROCmFP4_FAST is unique to charlie12345/ROCmFPX.
No CUDA / non-AMD GPU bench. All measurements are RDNA4 (gfx1200). The companion TQ3_4S quant for Blackwell is in a separate repo.
No AEON bench data yet. This quant was tested in production for regression but has not run the full AEON suite. The companion TQ3_4S quant has AEON results (0.560 mean).
No quality benchmark (perplexity, MMLU, GSM8K). The custom 4-bit quant works on the mesh's regression tests; whether it's "the best ROCmFPX quant" needs upstream validation.
No MTP / speculative-decode bench. Tess-4 has native MTP support; this quant was tested without MTP.
No vision/multimodal test. This variant is text-only.

Provenance

Source model: migtissera/Tess-4-27B — Qwen3.6-27B fine-tune
Source model license: Apache 2.0
Quantizer: charlie12345/ROCmFPX
Quantizer license: MIT
Build hardware: AMD RX 9060 XT 16 GB (RDNA4, gfx1200), ROCm 7.x, NixOS 25.11
Bench harness: Mesh production stack (mesh_eval regression)

License

Tess-4-27B is Apache 2.0 (per its HF model card).
charlie12345/ROCmFPX is MIT.
The GGUF in this repo is a derivative of the Apache 2.0-licensed parent, produced with the MIT-licensed quantizer. The Apache 2.0 license is preserved.