Update README.md

README.md

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 # 🚀 SIM_COT-LLaMA3-CODI-3B
 
-[![🤗 Model Repo](https://img.shields.io/badge/HuggingFace-Model-blue)](https://huggingface.co/internlm/SIM_COT-LLaMA3-CODI-8B)
+[![🤗 Model Repo](https://img.shields.io/badge/HuggingFace-Model-blue)](https://huggingface.co/internlm/SIM_COT-LLaMA3-CODI-3B)
 [![📂 GitHub](https://img.shields.io/badge/Code-GitHub-black?logo=github)](https://github.com/InternLM/SIM-CoT)  
 [![📄 Paper](https://img.shields.io/badge/Paper-arXiv-red?logo=arxiv)](https://arxiv.org/pdf/2509.20317)  
 
@@ -66,7 +66,7 @@ Empirical results demonstrate that SIM-CoT substantially improves both **in-doma
 
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-**SIM_COT-LLaMA3-CODI-8B** is a large implicit language model based on **Meta LLaMA-3.1-8B-Instruct**, fine-tuned with **SIM-CoT (Supervised Implicit Chain-of-Thought)** on top of the **CODI latent reasoning framework**.  
+**SIM_COT-LLaMA3-CODI-3B** is a large implicit language model based on **Meta LLaMA-3.2-3B-Instruct**, fine-tuned with **SIM-CoT (Supervised Implicit Chain-of-Thought)** on top of the **CODI latent reasoning framework**.  
 It is designed to improve ✨ *implicit reasoning* and 🧮 *arithmetic multi-step problem solving* across benchmarks such as **GSM8K, GSM-Hard, MultiArith, and SVAMP**.
 
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