Instructions to use spicyneuron/GLM-5.1-MLX-4.5bit with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use spicyneuron/GLM-5.1-MLX-4.5bit with MLX:

# Make sure mlx-lm is installed
# pip install --upgrade mlx-lm

# Generate text with mlx-lm
from mlx_lm import load, generate

model, tokenizer = load("spicyneuron/GLM-5.1-MLX-4.5bit")

prompt = "Write a story about Einstein"
messages = [{"role": "user", "content": prompt}]
prompt = tokenizer.apply_chat_template(
    messages, add_generation_prompt=True
)

text = generate(model, tokenizer, prompt=prompt, verbose=True)

Notebooks
Google Colab
Kaggle
Local Apps Settings
LM Studio

How to use spicyneuron/GLM-5.1-MLX-4.5bit with Pi:

Start the MLX server

# Install MLX LM:
uv tool install mlx-lm
# Start a local OpenAI-compatible server:
mlx_lm.server --model "spicyneuron/GLM-5.1-MLX-4.5bit"

Configure the model in Pi

# Install Pi:
npm install -g @mariozechner/pi-coding-agent
# Add to ~/.pi/agent/models.json:
{
  "providers": {
    "mlx-lm": {
      "baseUrl": "http://localhost:8080/v1",
      "api": "openai-completions",
      "apiKey": "none",
      "models": [
        {
          "id": "spicyneuron/GLM-5.1-MLX-4.5bit"
        }
      ]
    }
  }
}

Run Pi

# Start Pi in your project directory:
pi

Hermes Agent new

How to use spicyneuron/GLM-5.1-MLX-4.5bit with Hermes Agent:

Start the MLX server

# Install MLX LM:
uv tool install mlx-lm
# Start a local OpenAI-compatible server:
mlx_lm.server --model "spicyneuron/GLM-5.1-MLX-4.5bit"

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 spicyneuron/GLM-5.1-MLX-4.5bit

Run Hermes

hermes

OpenClaw new

How to use spicyneuron/GLM-5.1-MLX-4.5bit with OpenClaw:

Start the MLX server

# Install MLX LM:
uv tool install mlx-lm
# Start a local OpenAI-compatible server:
mlx_lm.server --model "spicyneuron/GLM-5.1-MLX-4.5bit"

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 "spicyneuron/GLM-5.1-MLX-4.5bit" \
  --custom-provider-id mlx-lm \
  --custom-compatibility openai \
  --custom-text-input \
  --accept-risk \
  --skip-health

Run OpenClaw

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

MLX LM

How to use spicyneuron/GLM-5.1-MLX-4.5bit with MLX LM:

Generate or start a chat session

# Install MLX LM
uv tool install mlx-lm
# Interactive chat REPL
mlx_lm.chat --model "spicyneuron/GLM-5.1-MLX-4.5bit"

Run an OpenAI-compatible server

# Install MLX LM
uv tool install mlx-lm
# Start the server
mlx_lm.server --model "spicyneuron/GLM-5.1-MLX-4.5bit"
# Calling the OpenAI-compatible server with curl
curl -X POST "http://localhost:8000/v1/chat/completions" \
   -H "Content-Type: application/json" \
   --data '{
     "model": "spicyneuron/GLM-5.1-MLX-4.5bit",
     "messages": [
       {"role": "user", "content": "Hello"}
     ]
   }'

GLM-5.1-MLX-4.5bit / README.md

spicyneuron

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	---
	language:
	- en
	- zh
	library_name: mlx
	license: mit
	pipeline_tag: text-generation
	base_model: zai-org/GLM-5.1
	tags:
	- mlx
	---

	[GLM 5.1](https://huggingface.co/zai-org/GLM-5.1) optimized to run
	on a Mac Studio M3 512. This is the quality-first version. Alternatives:
	[speed-first](https://huggingface.co/spicyneuron/GLM-5.1-MLX-2.9bit),
	[balanced](https://huggingface.co/spicyneuron/GLM-5.1-MLX-3.6bit)

	- A mixed-precision quant that balances speed, memory, and accuracy.
	- 4-bit baseline with important layers at higher precision.
	- Fits into ~420 GB memory, leaving plenty of room to run a smaller parallel model (ex: Qwen 3.6 35B).

	# Usage

	```sh
	# Start server at http://localhost:8080/chat/completions
	uvx --from mlx-lm mlx_lm.server \
	--host 127.0.0.1 \
	--port 8080 \
	--model spicyneuron/GLM-5.1-MLX-4.5bit
	```

	# Benchmarks

	\| metric \| baa-ai/GLM-5.1-RAM-270GB-MLX \| 2.9 bit \| 3.6 bit \| 4.5 bit (this model) \|
	\|---\|---\|---\|---\|---\|
	\| bpw \| 3.110 \| 2.906 \| 3.645 \| 4.538 \|
	\| base memory \| 269.303 \| 251.702 \| 315.648 \| 392.992 \|
	\| peak memory (1024/512) \| 291.257 \| 272.358 \| 341.020 \| 424.067 \|
	\| prompt tok/s (1024) \| 194.958 ± 0.075 \| 194.216 ± 0.167 \| 190.508 ± 0.880 \| 193.563 ± 0.094 \|
	\| gen tok/s (512) \| 21.381 ± 0.050 \| 19.527 ± 0.035 \| 17.873 ± 0.156 \| 17.259 ± 0.032 \|
	\| kl mean\* \| 0.686 ± 0.054 \| 0.268 ± 0.009 \| 0.117 ± 0.004 \| 0.048 ± 0.002 \|
	\| kl p95\* \| 1.478 ± 0.054 \| 0.537 ± 0.009 \| 0.236 ± 0.004 \| 0.097 ± 0.002 \|
	\| perplexity \| 4.780 ± 0.020 \| 4.118 ± 0.016 \| 3.945 ± 0.016 \| 3.920 ± 0.016 \|
	\| piqa \| 0.776 ± 0.010 \| 0.794 ± 0.009 \| 0.820 ± 0.017 \| 0.814 ± 0.017 \|

	\* GLM 5.1 KL divergence calculated against the largest quant I could run locally (~495 GB), so real KL is higher.

	Tested on a Mac Studio M3 Ultra with:

	```
	mlx_lm.kld --baseline-model path/to/mlx-full-precision
	mlx_lm.perplexity --sequence-length 2048 --seed 123
	mlx_lm.benchmark --prompt-tokens 1024 --generation-tokens 512 --num-trials 5
	mlx_lm.evaluate --tasks piqa --seed 123 --num-shots 0 --limit 500
	```

	`mlx_lm.kld` is approximate, based on `top_k` not full logits. Here's the [code](https://github.com/ml-explore/mlx-lm/pull/1146).

	# Methodology

	Quantized with a [mlx-lm fork](https://github.com/ml-explore/mlx-lm/pull/922),
	drawing inspiration from Unsloth/AesSedai/ubergarm style mixed-precision GGUFs.
	MLX quantization options differ from llama.cpp, but the principles are the
	same:

	- Sensitive layers like MoE routing, attention, and output embeddings get higher precision
	- More tolerant layers like MoE experts get lower precision