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Ko R1 1.5B Preview by OLAIR

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Ko R1 1.5B Preview is an open-source language model by OLAIR. Features: 1.5b LLM, VRAM: 7.1GB, Context: 128K, License: apache-2.0, LLM Explorer Score: 0.31, ELO: 1388.

  Arxiv:2501.02448   Conversational   Endpoints compatible   Ko   Qwen2   Region:us   Safetensors   Sharded   Tensorflow
Model Card on HF 🤗: https://huggingface.co/OLAIR/ko-r1-1.5b-preview 

Ko R1 1.5B Preview Benchmarks

LMSys ELO: 1388 vs 1272 (so35)9.1%
LLME Score: 0.30676
nn.n% — How the model compares to the reference models: Anthropic Sonnet 3.5 ("so35"), GPT-4o ("gpt4o") or GPT-4 ("gpt4").
Ko R1 1.5B Preview (OLAIR/ko-r1-1.5b-preview)
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Ko R1 1.5B Preview Parameters and Internals

LLM NameKo R1 1.5B Preview
Repository 🤗https://huggingface.co/OLAIR/ko-r1-1.5b-preview 
Model Size1.5b
Required VRAM7.1 GB
Updated2026-07-05
MaintainerOLAIR
Model Typeqwen2
Model Files  5.0 GB: 1-of-2   2.1 GB: 2-of-2
Supported Languagesko
Model ArchitectureQwen2ForCausalLM
Licenseapache-2.0
Context Length131072
Model Max Length131072
Transformers Version4.48.1
Tokenizer ClassLlamaTokenizer
Padding Token<｜end▁of▁sentence｜>
Vocabulary Size151665
Torch Data Typefloat32

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Note: green Score (e.g. "73.2") means that the model is better than OLAIR/ko-r1-1.5b-preview.

Rank the Ko R1 1.5B Preview 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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