What are the hardware requirements for Spark X2.6 4B OptiQ 4bit?

Spark X2.6 4B OptiQ 4bit requires approximately 3 GB of VRAM and supports a context window of 1024K tokens. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed Spark X2.6 4B OptiQ 4bit and how large is it?

Spark X2.6 4B OptiQ 4bit is developed by mlx-community, a model with 4b parameters. The model is published as open weights on Hugging Face and indexed on LLM Explorer with full benchmark history.

Where can I download or evaluate Spark X2.6 4B OptiQ 4bit?

Spark X2.6 4B OptiQ 4bit is hosted on Hugging Face and linked from this page. LLM Explorer also lists quantized variants and similar alternatives if available.

Spark X2.6 4B OptiQ 4bit by mlx-community — VRAM 3GB, 1024K context

Name: Spark X2.6 4B OptiQ 4bit
Author: mlx-community

Spark X2.6 4B OptiQ 4bit is an open-source language model by mlx-community. Features: 4b LLM, VRAM: 3GB, Context: 1024K, License: apache-2.0, Quantized, LLM Explorer Score: 0.33.

4-bit 4bit 8bit Apple-silicon Base model:quantized:xhtoken/s... Base model:xhtoken/spark-x2.6-... Conversational Custom code En Long-context Mixed-precision Mlx Optiq Quantized Region:us Safetensors Spark2 5 Zh

Model Card on HF 🤗: https://huggingface.co/mlx-community/Spark-X2.6-4B-OptiQ-4bit

Spark X2.6 4B OptiQ 4bit Parameters and Internals

LLM Name	Spark X2.6 4B OptiQ 4bit
Repository 🤗	https://huggingface.co/mlx-community/Spark-X2.6-4B-OptiQ-4bit
Base Model(s)	XHToken/Spark-X2.6-4B XHToken/Spark-X2.6-4B
Model Size	4b
Required VRAM	3 GB
Updated	2026-10-28
Maintainer	mlx-community
Model Type	spark2_5
Model Files	3.0 GB
Supported Languages	en zh
Quantization Type	4bit
Model Architecture	Spark2_5ForCausalLM
License	apache-2.0
Context Length	1048576
Model Max Length	1048576
Transformers Version	4.57.1
Tokenizer Class	TokenizersBackend
Padding Token	<｜▁pad▁｜>
Vocabulary Size	131072

Rank the Spark X2.6 4B OptiQ 4bit capabilities

Have you tried this model? Rate its performance — this feedback helps the ML community find the right model for their needs.

Instruction Following and Task Automation
Factuality and Completeness of Knowledge
Censorship and Alignment
Data Analysis and Insight Generation
Text Generation
Text Summarization and Feature Extraction
Code Generation
Multi-Language Support and Translation

Best Alternatives to Spark X2.6 4B OptiQ 4bit

Best Alternatives	Context / RAM	Downloads	Likes
Spark X2.6 4B MLX 8bit	1024K / 4.4 GB	350	2
Spark X2.5 4B MLX 8bit	1024K / 4.4 GB	858	3
Spark X2.5 4B OptiQ 4bit	1024K / 3 GB	462	3
Spark X2.5 4B MLX 4bit	1024K / 2.3 GB	617	2
Spark X2.5 4B OQ4e Fp16	1024K / 2.4 GB	140	1
Spark X2.6 4B	1024K / 8.3 GB	2537	440
Spark X2.6 4B Base	1024K / 8.3 GB	433	30
Spark X2.6 4B FP8	1024K / 4.5 GB	391	23
Spark X2.6 4B INT8	1024K / 4.5 GB	432	21
Spark X2.6 4B INT4	1024K / 3.4 GB	208	15

Note: green Score (e.g. "73.2") means that the model is better than mlx-community/Spark-X2.6-4B-OptiQ-4bit.