mlx-community/Ministral-3-8B-Base-2512-4bit

This is, Ministral 3 8B Base 2512 is a vision-language model: a text backbone paired with a vision encoder, supporting image understanding alongside text. This is the base pre-trained checkpoint — not instruction- or chat-tuned. For chat/instruction-following use cases, use the Instruct variant instead; this base checkpoint is intended for custom post-training/fine-tuning.

Community note. Structural check confirms the vision tower and multimodal projector were carried over intact (not dropped, which is a real failure mode for text-only conversion tools on vision-language models). Functional check confirms both text-only and image+text generation produce coherent output. Converted and verified by a single maintainer running local MLX tooling -- not independently reviewed by anyone else; please open a discussion if you hit anything unexpected.

This is an MLX conversion of mistralai/Ministral-3-8B-Base-2512, converted with mlx-vlm. Refer to the original model card for the full description, capabilities, and license terms.

Heads up

• Base model, not instruct-tuned — expect raw completion behavior, not chat-following. Don't expect it to follow instructions well.
• Vision retained at full precision — only the language backbone is quantized; the vision tower and multimodal projector are untouched bf16, per mlx-vlm's standard policy of not quantizing multimodal modules.
• Output size on disk: 6.44GB

Provenance

• Source: mistralai/Ministral-3-8B-Base-2512 (BF16)
• Language model layers: 4-bit affine quantization, group_size=64
• Vision tower + multimodal projector: kept at full precision (not quantized)
• Blended average: 5.745 bits per weight across all parameters

Ministral 3 family

Model	Type	mlx-community (4-bit)
Ministral 3 3B Base 2512	Base pre-trained	mlx-community/Ministral-3-3B-Base-2512-4bit
Ministral 3 3B Instruct 2512	Instruct post-trained	mlx-community/Ministral-3-3B-Instruct-2512-4bit
Ministral 3 3B Reasoning 2512	Reasoning capable	mlx-community/Ministral-3-3B-Reasoning-2512-4bit
Ministral 3 8B Base 2512	Base pre-trained	mlx-community/Ministral-3-8B-Base-2512-4bit
Ministral 3 8B Instruct 2512	Instruct post-trained	mlx-community/Ministral-3-8B-Instruct-2512-4bit
Ministral 3 8B Reasoning 2512	Reasoning capable	mlx-community/Ministral-3-8B-Reasoning-2512-4bit
Ministral 3 14B Base 2512	Base pre-trained	mlx-community/Ministral-3-14B-Base-2512-4bit
Ministral 3 14B Instruct 2512	Instruct post-trained	mlx-community/Ministral-3-14B-Instruct-2512-4bit
Ministral 3 14B Reasoning 2512	Reasoning capable	mlx-community/Ministral-3-14B-Reasoning-2512-4bit

Use with mlx

pip install -U mlx-vlm

python -m mlx_vlm.generate --model mlx-community/Ministral-3-8B-Base-2512-4bit --max-tokens 100 --temperature 0.0 --prompt "Describe this image." --image <path_to_image>

For text-only prompts, omit --image.

License

Apache 2.0 — see the original model card for the full license text and any usage terms.