What are the hardware requirements for VibeThinker 1.5B Mlx 4bit?

VibeThinker 1.5B Mlx 4bit requires approximately 0.9 GB of VRAM and supports a context window of 128K tokens. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed VibeThinker 1.5B Mlx 4bit and how large is it?

VibeThinker 1.5B Mlx 4bit is developed by mlx-community, a model with 1.5b 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 VibeThinker 1.5B Mlx 4bit?

VibeThinker 1.5B Mlx 4bit is hosted on Hugging Face and linked from this page. LLM Explorer also lists quantized variants and similar alternatives if available.

VibeThinker 1.5B Mlx 4bit by mlx-community — VRAM 0.9GB, 128K context

Name: VibeThinker 1.5B Mlx 4bit
Author: mlx-community

VibeThinker 1.5B Mlx 4bit is an open-source language model by mlx-community. Features: 1.5b LLM, VRAM: 0.9GB, Context: 128K, License: mit, Quantized, LLM Explorer Score: 0.23.

Arxiv:2511.06221 4-bit 4bit Base model:quantized:weiboai/v... Base model:weiboai/vibethinker... Code Conversational En Gpqa Math Mlx Quantized Qwen2 Region:us Safetensors

Model Card on HF 🤗: https://huggingface.co/mlx-community/VibeThinker-1.5B-mlx-4bit

VibeThinker 1.5B Mlx 4bit Parameters and Internals

LLM Name	VibeThinker 1.5B Mlx 4bit
Repository 🤗	https://huggingface.co/mlx-community/VibeThinker-1.5B-mlx-4bit
Base Model(s)	WeiboAI/VibeThinker-1.5B WeiboAI/VibeThinker-1.5B
Model Size	1.5b
Required VRAM	0.9 GB
Updated	2026-07-26
Maintainer	mlx-community
Model Type	qwen2
Model Files	0.9 GB
Supported Languages	en
Quantization Type	4bit
Model Architecture	Qwen2ForCausalLM
License	mit
Context Length	131072
Model Max Length	131072
Transformers Version	4.56.1
Tokenizer Class	Qwen2Tokenizer
Padding Token	<\|endoftext\|>
Vocabulary Size	151936
Errors	replace

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

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