---
title: Gemma 4 E4B Apple Silicon Benchmarks
summary: GroundSlate's default vision model. A balance of speed and quality, 5.2 GB.
---

# Gemma 4 E4B Apple Silicon Benchmarks

GroundSlate's default vision model. A balance of speed and quality, 5.2 GB.

- Repo: `mlx-community/gemma-4-e4b-it-4bit`
- Maker: Google DeepMind
- Maker page: /resources/groundslate/benchmarks/makers/google-deepmind
- Line: Gemma 4
- Line page: /resources/groundslate/benchmarks/makers/google-deepmind/gemma-4
- License: [Apache License 2.0](https://ai.google.dev/gemma/docs/gemma_4_license)

E2B and E4B are effective-parameter mixtures. The 12B is dense. 26B-A4B is a mixture-of-experts. GroundSlate runs the 4-bit MLX conversions from mlx-community.

- GroundSlate default
- Size: 5.2 GB
- Tools: list_models, set_vision_model, index_video, index_image, process_video, reindex_clips, name_video, summarize_video
- Suite: /resources/groundslate/benchmarks/vision

## On each Mac

| Machine | Status | Still | Video chunk |
| --- | --- | --- | --- |
| MacBook Pro, Apple M3 Max, 64 GB unified memory | Reference Mac | 3.49s | 7.86s |

## Speed

- Still: 3.49s, prefill 0.87s, 136 tokens
- Video chunk: 7.86s, 323 tokens

## Still output

```json
{
  "desc": "Three individuals are visible, with the woman in the foreground smiling while looking off into the distance. They are situated outdoors on a walkway overlooking a large body of water, possibly the ocean. In the background to the left, a Ferris wheel is partially visible. The scene is bathed in the warm, golden light of either sunrise or sunset. The subjects are dressed in casual attire, and the composition focuses on the expansive view.",
  "subject": "smiling woman",
  "shot": "medium",
  "setting": "outdoor",
  "venue_type": "seaside walkway",
  "notable_objects": [
    "Ferris wheel",
    "railing",
    "ocean"
  ]
}
```

## Video chunk output

```json
{
  "shots": [
    {
      "start": 0.0,
      "end": 2.0,
      "desc": "A young woman smiles while looking out at the ocean at sunset.",
      "subject": "Young woman",
      "shot": "medium",
      "motion": "slow",
      "center_x": 0.3,
      "setting": "outdoor",
      "venue_type": "rooftop",
      "notable_objects": [
        "ocean",
        "sunset"
      ]
    },
    {
      "start": 2.0,
      "end": 4.0,
      "desc": "The woman continues to smile, with others visible behind her.",
      "subject": "Young woman",
      "shot": "medium",
      "motion": "static",
      "center_x": 0.3,
      "setting": "outdoor",
      "venue_type": "rooftop",
      "notable_objects": [
        "ocean",
        "sunset"
      ]
    },
    {
      "start": 4.0,
      "end": 6.0,
      "desc": "The scene remains the same, capturing the beautiful sunset view.",
      "subject": "Group of people",
      "shot": "medium",
      "motion": "static",
      "center_x": 0.5,
      "setting": "outdoor",
      "venue_type": "rooftop",
      "notable_objects": [
        "ocean",
        "sunset"
      ]
    }
  ],
  "best_segment": {
    "start": 0.0,
    "end": 6.0,
    "reason": "Establishes the setting and mood of the scene."
  },
  "track": [
    {
      "t": 0.0,
      "x": 0.3
    },
    {
      "t": 2.0,
      "x": 0.3
    },
    {
      "t": 4.0,
      "x": 0.3
    },
    {
      "t": 6.0,
      "x": 0.3
    }
  ],
  "summary": "The video captures a group of young people enjoying a beautiful sunset view from an elevated location. The main subject, a young woman, smiles warmly while looking out over the vast ocean. The setting appears to be a rooftop or high vantage point overlooking the water.",
  "visual_kind": "footage"
}
```