GPT Oss 20B by openai

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GPT Oss 20B is an open-source language model by openai. Features: 20b LLM, VRAM: 13.8GB, Context: 128K, License: apache-2.0, LLM Explorer Score: 0.52.

  Arxiv:2508.10925   8-bit   Conversational   Deploy:azure   Endpoints compatible   Eval-results   Gpt oss   Mxfp4   Region:us   Safetensors   Sharded   Tensorflow   Vllm

GPT Oss 20B Benchmarks

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 Parameters and Internals

LLM NameGPT Oss 20B
Repository 🤗https://huggingface.co/openai/gpt-oss-20b 
Model Size20b
Required VRAM13.8 GB
Updated2026-04-01
Maintaineropenai
Model Typegpt_oss
Model Files  4.8 GB: 0-of-2   4.8 GB: 1-of-2   4.2 GB: 2-of-2
Model ArchitectureGptOssForCausalLM
Licenseapache-2.0
Context Length131072
Model Max Length131072
Transformers Version4.55.0.dev0
Tokenizer ClassPreTrainedTokenizerFast
Padding Token<|endoftext|>
Vocabulary Size201088

Quantized Models of the GPT Oss 20B

Model
Likes
Downloads
VRAM
GPT Oss 20B GGUF66523918811 GB
GPT Oss 20B MXFP4 Q8968970012 GB
GPT Oss 20B Unsloth Bnb 4bit3820136212 GB
GPT Oss 20B Bnb 4bit132441640 GB
GPT Oss 20B MXFP4 Q414477611 GB
GPT Oss 20B MLX 8bit50387222 GB

Best Alternatives to GPT Oss 20B

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Context / RAM
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Likes
OTel LLM 20B Reasoning128K / 83.8 GB866210
Context 1128K / 41.8 GB4317381
GPT Oss 20B128K / 13.8 GB4187335
GPT Oss Safeguard 20B128K / 13.8 GB47089206
GPT Oss 20B Heretic Ara V4128K / 13.8 GB46211
GPT Oss 20B Abliterated128K / 41.6 GB3322
GPT Oss 20B BF16128K / 41.6 GB11085120
GPT Oss 20B Heretic128K / 41.6 GB3612103
GPT Oss 20B Ja Fin Thinking128K / 41.6 GB4058
...ecurity 20B Merged Heretic Ara128K / 41.6 GB2281

Rank the GPT Oss 20B 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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Release v20260328a