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metadata
license: apple-amlr
library_name: mlx-vlm
base_model: apple/FastVLM-1.5B
tags:
  - fastvlm
  - mlx
  - mlx-vlm
  - vlm
  - quantized
  - apple-silicon
  - 1.5B
  - q4 / 4-bit quantized

fastvlm-1.5b-mlx-q4

This repository contains an MLX-converted FastVLM checkpoint.

Model

  • Base model: apple/FastVLM-1.5B
  • Parameters: 1.5B
  • Precision: q4 / 4-bit quantized
  • Approx. folder size: 1.4G

The checkpoint was converted from Apple FastVLM using the official FastVLM model export workflow and patched mlx-vlm.

Files

This repository should include:

  • config.json
  • MLX model weights
  • tokenizer files
  • fastvithd.mlpackage vision tower

Example Usage

hf download dbaek111/fastvlm-1.5b-mlx-q4 --local-dir ./fastvlm-1.5b-mlx-q4

python -m mlx_vlm.generate \
  --model ./fastvlm-1.5b-mlx-q4 \
  --image /path/to/your/image.jpg \
  --prompt "Explain the image." \
  --max-tokens 64 \
  --temp 0.0

Benchmark

Benchmark condition:

  • Images: three 512px test images
  • Max tokens: 64
  • Temperature: 0.0
  • Same prompt across all tested variants
  • Model loaded once, then images processed sequentially
Model Size Load Img1 Img2 Img3 Avg
fastvlm-1.5b-mlx-q4 1.4G 2.46s 0.454s 0.462s 0.443s 0.453s

Notes

This is a converted and quantized derivative of Apple FastVLM.

Please refer to the original Apple FastVLM repository and model card for license and usage conditions.