4-bit Open on Hugging Face
Parameters
27B
Weights (est.)
≈ 16.1 GB
Mac memory (est.)
24 GB+
Size is estimated from the parameter count and quantisation. Memory allows a fifth extra for context plus 2 GB for the system; long contexts need more.
Run it
With mlx-vlm on an Apple silicon Mac:
pip install mlx-vlmpython -m mlx_vlm.generate --model mlx-community/Tess-4-27B-OptiQ-4bit --image photo.jpg --prompt "Describe this image"
Details
- Base model
- migtissera/Tess-4-27B (quantized)
- Vendor
- migtissera
- Task
- Vision + text
- Quantisation
- 4-bit
- Licence
- apache-2.0
- Downloads
- 187 in the last 30 days · 627 all time · 0 likes
- Published
- 2026-07-14 · updated 2026-10-30 (12d ago)
- Tags
- qwen3_5, quantized, mixed-precision, 4bit, 8bit, optiq, apple-silicon, vision-language, tess, agentic, reasoning, thinking
Other MLX builds of migtissera/Tess-4-27B
| Build | Quantisation | Weights | Mac memory | Downloads |
|---|---|---|---|---|
| Tess-4-27B-OptiQ-4bit (this one) | 4-bit | ≈ 16.1 GB | 24 GB+ | 187 |
| Tess-4-27B-nvfp4 | 4-bit | ≈ 16.1 GB | 24 GB+ | 43 |
| Tess-4-27B-4bit | 4-bit | ≈ 16.1 GB | 24 GB+ | 31 |
| Tess-4-27B-mxfp4 | MXFP4 | ≈ 16.1 GB | 24 GB+ | 27 |
| Tess-4-27B-5bit | 5-bit | ≈ 19.4 GB | 24 GB+ | 21 |
| Tess-4-27B-6bit | 6-bit | ≈ 22.8 GB | 32 GB+ | 29 |
| Tess-4-27B-8bit | 8-bit | ≈ 29.5 GB | 48 GB+ | 30 |
| Tess-4-27B-mxfp8 | MXFP8 | ≈ 29.5 GB | 48 GB+ | 26 |
| Tess-4-27B-bf16 | bf16 | ≈ 54.7 GB | 64 GB+ | 29 |