Instructions to use kingjones777/K2-Horizon-32B-ROCmFP4-GGUF with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Notebooks
Google Colab
Kaggle
Local Apps Settings

How to use kingjones777/K2-Horizon-32B-ROCmFP4-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 kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP
# Run inference directly in the terminal:
llama cli -hf kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP

Install from WinGet (Windows)

winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP
# Run inference directly in the terminal:
llama cli -hf kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP

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 kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP
# Run inference directly in the terminal:
./llama-cli -hf kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP

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 kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP
# Run inference directly in the terminal:
./build/bin/llama-cli -hf kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP

Use Docker

docker model run hf.co/kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP

LM Studio
Jan

vLLM

How to use kingjones777/K2-Horizon-32B-ROCmFP4-GGUF with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "kingjones777/K2-Horizon-32B-ROCmFP4-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": "kingjones777/K2-Horizon-32B-ROCmFP4-GGUF",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP

Ollama
How to use kingjones777/K2-Horizon-32B-ROCmFP4-GGUF with Ollama:
```
ollama run hf.co/kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP
```
Unsloth Desktop

How to use kingjones777/K2-Horizon-32B-ROCmFP4-GGUF with Pi:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP

Configure the model in Pi

# Install Pi:
npm install -g @earendil-works/pi-coding-agent
# Add to ~/.pi/agent/models.json:
{
  "providers": {
    "llama-cpp": {
      "baseUrl": "http://localhost:8080/v1",
      "api": "openai-completions",
      "apiKey": "none",
      "models": [
        {
          "id": "kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP"
        }
      ]
    }
  }
}

Run Pi

# Start Pi in your project directory:
pi

Docker Model Runner
How to use kingjones777/K2-Horizon-32B-ROCmFP4-GGUF with Docker Model Runner:
```
docker model run hf.co/kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP
```

Lemonade

How to use kingjones777/K2-Horizon-32B-ROCmFP4-GGUF with Lemonade:

Pull the model

# Download Lemonade from https://lemonade-server.ai/
lemonade pull kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP

Run and chat with the model

lemonade run user.K2-Horizon-32B-ROCmFP4-GGUF-Q4_0_ROCMFP

List all available models

lemonade list

Hermes Agent

How to use kingjones777/K2-Horizon-32B-ROCmFP4-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 kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP

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 kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP

Run Hermes

hermes

Atomic Chat

OpenClaw

How to use kingjones777/K2-Horizon-32B-ROCmFP4-GGUF with OpenClaw:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP

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 "kingjones777/K2-Horizon-32B-ROCmFP4-GGUF:Q4_0_ROCMFP" \
  --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"

K2-Horizon-32B — ROCmFP4 for AMD Strix Halo (gfx1151)

Four ROCmFP4/ROCmFPX tiers of IFM/K2-Horizon-32B, quantised from the official BF16 GGUF and measured on a Ryzen AI Max+ 395 (Radeon 8060S, gfx1151, 128 GB unified, ROCm 6.4.1). K2-Horizon-32B is a dense k2_horizon decoder — 64 layers, hidden 5120, 64 attention heads, rope_head_dim 128 — and a reasoning model.

Every number on this card was measured on these exact files. Nothing is estimated.

Which file should I use?

file	ftype	size	decode (HIP)	prefill (HIP)	use it for
`K2-Horizon-32B-Q4_0_ROCMFP4_FAST.gguf`	103	17.22 GiB	11.8 t/s	340 t/s	default — fastest layout
`K2-Horizon-32B-Q4_0_ROCMFP4_STRIX_LEAN.gguf`	106	17.42 GiB	11.8 t/s	337 t/s	Strix K/V + Q5_K embeddings
`K2-Horizon-32B-Q4_0_ROCMFP4_COHERENT.gguf`	102	18.54 GiB	11.6 t/s	288 t/s	most bits in the 4-bit family
`K2-Horizon-32B-Q8_0_ROCMFPX_AGENT.gguf`	115	34.02 GiB	6.3 t/s	323 t/s	8-bit, agent/tool-call routing

Start with FAST unless you specifically want 8-bit weights.

Quick start — the backend is one flag

# HIP / ROCm — best prefill (long prompts, RAG, agentic)
llama-server -m K2-Horizon-32B-Q4_0_ROCMFP4_FAST.gguf \
  -dev ROCm0 -fa on -ngl 999 --no-mmap -fit off -np 1 \
  -b 2048 -ub 1024 -t 16 --poll 100 -c 8192 --jinja

# Vulkan — SAME FILE. Only -dev changes.
llama-server -m K2-Horizon-32B-Q4_0_ROCMFP4_FAST.gguf -dev Vulkan0 ...

⛔ You need a build with BOTH `k2_horizon` and the ROCmFP4 types

These files declare general.architecture = k2-horizon and use the ROCmFP4/ROCmFPX tensor types (ggml types 100-119). Two independent pieces of support are required, and no single public build has both yet:

k2_horizon architecture — lives in the MBZUAI-IFM llama.cpp fork; an upstream PR is in progress.
ROCmFP4/ROCmFPX tensor types — from ROCmFPX.

This repository ships k2-horizon-on-rocmfpx.patch — the k2_horizon arch applied on top of a ROCmFPX base, exactly the tree these files were built and verified against. Build:

git clone https://github.com/ROCmFPX/ROCmFPX.git && cd ROCmFPX
curl -fLO https://huggingface.co/kingjones777/K2-Horizon-32B-ROCmFP4-GGUF/resolve/main/k2-horizon-on-rocmfpx.patch
git apply k2-horizon-on-rocmfpx.patch
cmake -B build -DGGML_HIP=ON -DGGML_VULKAN=ON -DAMDGPU_TARGETS=gfx1151 -DGGML_NATIVE=ON -DCMAKE_BUILD_TYPE=Release
cmake --build build -j$(nproc)

⛔ Serving note — this is a reasoner

K2-Horizon-32B emits chain-of-thought into reasoning_content before it answers. A short token budget returns HTTP 200 with an empty content and all the tokens in reasoning — that is the model thinking, not a broken file. Give it room: tool calls and short answers are fine at ~500 tokens; long-form may need more. Verified: at 40 tokens the content was empty; at 500 it answered correctly.

Head handling

Quantised at each tier's native routing with no forced --output-tensor-type override. On this family the unprotected head performs well; the tiers are posted as-built.

Reproduction block

model     : IFM/K2-Horizon-32B  (official BF16 GGUF, K2-Horizon-32B-BF16.gguf, 64.8 GB)
            arch k2-horizon (dense): 64 layers, hidden 5120, 64 heads, rope_head_dim 128
port      : MBZUAI-IFM/llama.cpp @ model/K2Horizon (35999d1) k2_horizon arch
            applied onto ROCmFPX fork @ 85d8f7e  (patch shipped in this repo)
quantize  : llama-quantize  <in> <out> <ftype>   (no head-type override)
            Q4_0_ROCMFP4_COHERENT (102) · Q4_0_ROCMFP4_FAST (103)
            Q4_0_ROCMFP4_STRIX_LEAN (106) · Q8_0_ROCMFPX_AGENT (115)
serve     : llama-server -dev {ROCm0|Vulkan0} -fa on -ngl 999 --no-mmap -fit off
            -np 1 -b 2048 -ub 1024 -t 16 --poll 100 -c 8192 --jinja
box       : Ryzen AI Max+ 395 / Radeon 8060S (gfx1151) / 128 GB unified, ROCm 6.4.1
verified  : loads on GPU, generates correct output ("capital of France" -> "Paris")
measured  : 2026-09-04

SHA256

98f213c632cbbbffecc87a136603cc5088c3586ff6fdf15a72427b622a6480c6  K2-Horizon-32B-Q4_0_ROCMFP4_COHERENT.gguf
35baebe33a61147ba8f074a9b1e24f25c5936add7675f755b6f1866f1af4e9a8  K2-Horizon-32B-Q4_0_ROCMFP4_FAST.gguf
b737899d4f7f013549bad51002b4b6feee4b7c1a48c6eefe6b8d54ca3019dd53  K2-Horizon-32B-Q4_0_ROCMFP4_STRIX_LEAN.gguf
64c7c420a197bb7f96de1afafeb0821829e64e8a9b361520875c8ec56734ec6d  K2-Horizon-32B-Q8_0_ROCMFPX_AGENT.gguf

Credits

IFM / MBZUAI — the K2-Horizon-32B base model (Apache-2.0) and the k2_horizon llama.cpp architecture. ROCmFP4/ROCmFPX quantisation types are the work of ROCmFPX. This repository adds only the ROCmFP4 quant ladder, the arch-on-ROCmFPX patch, and the measurements.

Downloads last month: 210

GGUF

Model size

35B params

Architecture

k2-horizon

Hardware compatibility

4-bit

8-bit

Model tree for kingjones777/K2-Horizon-32B-ROCmFP4-GGUF

Base model

IFM/K2-Horizon-32B

Quantized

(2)

this model

K2-Horizon-32B — ROCmFP4 for AMD Strix Halo (gfx1151)

Which file should I use?

Quick start — the backend is one flag

⛔ You need a build with BOTH k2_horizon and the ROCmFP4 types

⛔ Serving note — this is a reasoner

Head handling

Reproduction block

SHA256

Credits

Model tree for kingjones777/K2-Horizon-32B-ROCmFP4-GGUF

⛔ You need a build with BOTH `k2_horizon` and the ROCmFP4 types