How to use from the
Use from the
MLX library
# 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("mlx-community/gemma-4-31B-it-qat-assistant-4bit")

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)

gemma-4-31B-it-qat-assistant-4bit

This repository contains Multi-Token Prediction (MTP) drafter weights split from google/gemma-4-31B-it-qat-q4_0-unquantized-assistant for use with mlx-vlm speculative decoding.

This is not a standalone chat or text-generation model. Load it as the draft model alongside a compatible Gemma 4 31B target checkpoint.

Use with mlx-vlm

uv run mlx_vlm.generate \
  --model google/gemma-4-31B-it \
  --draft-model mlx-community/gemma-4-31B-it-qat-assistant-4bit \
  --draft-kind mtp \
  --prompt "Describe this image." \
  --max-tokens 256

For local weights:

uv run mlx_vlm.generate \
  --model /path/to/target-model \
  --draft-model /path/to/gemma-4-31B-mtp \
  --draft-kind mtp \
  --prompt "Describe this image." \
  --max-tokens 256

Model Details

  • Model type: gemma4_assistant
  • Target architecture: Gemma 4 31B
  • Precision: 4bit
  • Runtime: MLX / mlx-vlm
  • Format: Safetensors with MLX-compatible config and tokenizer files

The stored tensors are 4bit MLX-compatible drafter weights.

Intended Use

Use this repo only as a speculative decoding drafter for compatible Gemma 4 31B checkpoints. The target model verifies drafted tokens, while this MTP model proposes candidate tokens per decoding step.

Limitations

This checkpoint requires runtime support for Gemma 4 MTP draft models in mlx-vlm. Standard standalone generation through generic Transformers APIs is not expected to work with this repository by itself.

Please refer to the upstream google/gemma-4-31B-it model card and license terms for model usage constraints.

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