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GPT Oss 20B OptiQ 4bit by mlx-community

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GPT Oss 20B OptiQ 4bit is an open-source language model by mlx-community. Features: 20b LLM, VRAM: 11.6GB, Context: 128K, License: apache-2.0, Quantized, LLM Explorer Score: 0.31.

  4-bit   4bit   Apple-silicon   Base model:openai/gpt-oss-20b Base model:quantized:openai/gp...   Conversational   En   Gpt-oss   Gpt oss   Mixed-precision   Mlx   Moe   Openai   Optiq   Quantized   Region:us   Safetensors   Sharded   Tensorflow
Model Card on HF 🤗: https://huggingface.co/mlx-community/gpt-oss-20b-OptiQ-4bit 

GPT Oss 20B OptiQ 4bit Benchmarks

LLME Score: 0.30914
nn.n% — How the model compares to the reference models: Anthropic Sonnet 3.5 ("so35"), GPT-4o ("gpt4o") or GPT-4 ("gpt4").
GPT Oss 20B OptiQ 4bit (mlx-community/gpt-oss-20b-OptiQ-4bit)
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GPT Oss 20B OptiQ 4bit Parameters and Internals

LLM NameGPT Oss 20B OptiQ 4bit
Repository 🤗https://huggingface.co/mlx-community/gpt-oss-20b-OptiQ-4bit 
Base Model(s)  GPT Oss 20B   openai/gpt-oss-20b
Model Size20b
Required VRAM11.6 GB
Updated2026-06-21
Maintainermlx-community
Model Typegpt_oss
Model Files  5.4 GB: 1-of-3   5.3 GB: 2-of-3   0.9 GB: 3-of-3
Supported Languagesen
Quantization Type4bit
Model ArchitectureGptOssForCausalLM
Licenseapache-2.0
Context Length131072
Model Max Length131072
Transformers Version4.55.0.dev0
Tokenizer ClassTokenizersBackend
Padding Token<|endoftext|>
Vocabulary Size201088

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GPT Oss 20B MXFP4 Q8128K / 12.1 GB37451764
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GPT Oss 20B MLX 8bit128K / 22.1 GB532755
GPT Oss 20B MXFP4 Q4128K / 11.2 GB219915
GPT Oss Coder 20B128K / 13.8 GB2413
GPT Oss 20B128K / 13.8 GB80825954637
OTel LLM 20B Reasoning128K / 83.8 GB14690
GPT Oss 20B128K / 13.8 GB1553547
Context 1128K / 41.8 GB2035398
Note: green Score (e.g. "73.2") means that the model is better than mlx-community/gpt-oss-20b-OptiQ-4bit.

Rank the GPT Oss 20B OptiQ 4bit Capabilities

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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  

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