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GPT Oss 20B MXFP4 Q8 by mlx-community

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GPT Oss 20B MXFP4 Q8 is an open-source language model by mlx-community. Features: 20b LLM, VRAM: 12.1GB, Context: 128K, License: apache-2.0, Quantized, LLM Explorer Score: 0.33.

  4-bit   Base model:openai/gpt-oss-20b Base model:quantized:openai/gp...   Conversational   Gpt oss   Mlx   Q8   Quantized   Region:us   Safetensors   Sharded   Tensorflow   Vllm
Model Card on HF 🤗: https://huggingface.co/mlx-community/gpt-oss-20b-MXFP4-Q8 

GPT Oss 20B MXFP4 Q8 Benchmarks

LLME Score: 0.33405
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 MXFP4 Q8 (mlx-community/gpt-oss-20b-MXFP4-Q8)
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GPT Oss 20B MXFP4 Q8 Parameters and Internals

LLM NameGPT Oss 20B MXFP4 Q8
Repository 🤗https://huggingface.co/mlx-community/gpt-oss-20b-MXFP4-Q8 
Base Model(s)  GPT Oss 20B   openai/gpt-oss-20b
Model Size20b
Required VRAM12.1 GB
Updated2026-04-17
Maintainermlx-community
Model Typegpt_oss
Model Files  5.3 GB: 1-of-3   5.3 GB: 2-of-3   1.5 GB: 3-of-3
Quantization Typeq8
Model ArchitectureGptOssForCausalLM
Licenseapache-2.0
Context Length131072
Model Max Length131072
Transformers Version4.55.0.dev0
Tokenizer ClassPreTrainedTokenizer
Padding Token<|endoftext|>
Vocabulary Size201088

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GPT Oss 20B Unsloth Bnb 4bit128K / 12.6 GB20136238
GPT Oss 20B Bnb 4bit128K / 40.8 GB2441613
GPT Oss 20B MXFP4 Q4128K / 11.2 GB477614
GPT Oss 20B MLX 8bit128K / 22.1 GB387250
GPT Oss Coder 20B128K / 13.8 GB348
GPT Oss 20B128K / 13.8 GB64991724492
OTel LLM 20B Reasoning128K / 83.8 GB866210
Context 1128K / 41.8 GB4317381
GPT Oss 20B128K / 13.8 GB4187335
GPT Oss 20B GGUF128K / 11.5 GB239188665
Note: green Score (e.g. "73.2") means that the model is better than mlx-community/gpt-oss-20b-MXFP4-Q8.

Rank the GPT Oss 20B MXFP4 Q8 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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