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OpenReasoning Nemotron 1.5B by nvidia

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OpenReasoning Nemotron 1.5B is an open-source language model by nvidia. Features: 1.5b LLM, VRAM: 3.1GB, Context: 128K, License: cc-by-4.0, LLM Explorer Score: 0.27.

  Arxiv:2504.01943   Arxiv:2504.16891   Arxiv:2507.09075 Base model:finetune:qwen/qwen2...   Base model:qwen/qwen2.5-1.5b   Code   Conversational   En   Endpoints compatible   Nvidia   Qwen2   Region:us   Safetensors
Model Card on HF 🤗: https://huggingface.co/nvidia/OpenReasoning-Nemotron-1.5B 

OpenReasoning Nemotron 1.5B Benchmarks

LLME Score: 0.27289
nn.n% — How the model compares to the reference models: Anthropic Sonnet 3.5 ("so35"), GPT-4o ("gpt4o") or GPT-4 ("gpt4").
OpenReasoning Nemotron 1.5B (nvidia/OpenReasoning-Nemotron-1.5B)
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OpenReasoning Nemotron 1.5B Parameters and Internals

LLM NameOpenReasoning Nemotron 1.5B
Repository 🤗https://huggingface.co/nvidia/OpenReasoning-Nemotron-1.5B 
Base Model(s)  Qwen/Qwen2.5-1.5B   Qwen/Qwen2.5-1.5B
Model Size1.5b
Required VRAM3.1 GB
Updated2026-04-04
Maintainernvidia
Model Typeqwen2
Model Files  3.1 GB
Supported Languagesen
Model ArchitectureQwen2ForCausalLM
Licensecc-by-4.0
Context Length131072
Model Max Length131072
Transformers Version4.47.1
Tokenizer ClassQwen2Tokenizer
Padding Token<|endoftext|>
Vocabulary Size151936
Torch Data Typebfloat16
Errorsreplace

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1.5B Cold Start SFT128K / 3.5 GB45030
Note: green Score (e.g. "73.2") means that the model is better than nvidia/OpenReasoning-Nemotron-1.5B.

Rank the OpenReasoning Nemotron 1.5B 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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