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README.md

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-license: apache-2.0
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+---
+license: apache-2.0
+---
+
+# S1-Base-1.5-8B-128K
+
+[中文版](./README_zh.md) ｜ [English](./README.md)
+
+## Model Introduction  
+
+This repository contains the S1-Base-1.5-8B-128K general scientific large language model, developed through post-training (SFT+GRPO) based on the scientific foundation model [S1-Base](https://huggingface.co/collections/ScienceOne-AI/s1-base). This model maintains scientific reasoning capabilities while significantly enhancing long context understanding and reasoning abilities, as well as complex instruction following in scientific research scenarios. The model supports a context length of 128k.
+   
+## Model Weights  
+
+The S1-Base-1.5-8B-128K model is open-sourced under the Apache 2.0 license. You can download the model weights from our [Huggingface](https://huggingface.co/ScienceOne-AI/S1-Base-1.5-8B-128K) or [ModelScope](https://modelscope.cn/models/ScienceOne-AI/S1-Base-1.5-8B-128K).
+
+
+| Model Name     | Huggingface Link      | ModelScope Link          |  
+|-------------|-------------------------------------|-------------------------------------|  
+|S1-Base-8B   | [Download](https://huggingface.co/ScienceOne-AI/S1-Base-1.5-8B-128K) | [Download](https://modelscope.cn/models/ScienceOne-AI/S1-Base-1.5-8B-128K) |  
+
+## Model Evaluation
+
+
+To comprehensively validate the capabilities of S1-Base-1.5-128K, we conducted systematic evaluations across three core competencies: long context ability, instruction following ability, and scientific reasoning ability. The results are shown in the table below.
+
+| Benchmark | S1-Base-1.5-8B-128K | S1-Base-8B | Qwen3-8B | Intern-S1-mini | GLM-Z1-9B-0414 |
+|---|---|---|---|---|---|
+| CLongEval | **36.18** | 27.51 | 33.62 | 32.82 | 25.71 |
+| InfiniteBench | **35.57** | 27.62 | 34.41 | 30.42 | 29.58 |
+| IFEval | **87.06** | 70.42 | 85.00 | 83.00 | 78.93 |
+| GPQA | **70.33** | 63.01 | 60.86 | 65.97 | 55.81 |
+| ChemBench | 61.59 | **62.74** | 57.79 | 57.54 | 55.85 |
+| LLM-MSE | 83.63 | **88.50** | 83.51 | 78.65 | 80.97 |
+| LAB bench | 37.54 | **37.63** | 26.52 | 29.11 | 29.89 |
+| AIME2024 | 77.92 | 75.42 | 74.60 | **85.00** | 79.37 |
+| LiveMathBench | **86.72** | 82.81 | 77.00 | **86.72** | 82.82 |
+
+**Key Highlights:**
+- 📜 **Enhanced Long Context Reasoning**: The model leads among base models and similar-sized models on public long-context benchmarks such as CLongEval and InfiniteBench, with significant improvements in custom long-text evaluations for real-world scenarios involving papers and web pages.
+- 🎯 **Improved Complex Instruction Following**: Built with a scientific literature instruction following task system covering four major categories—document understanding, structured generation, information extraction, and chart comprehension—combined with multi-dimensional constraints including length, format, and content. The model maintains leadership on benchmarks like IFEval.
+- 🔬 **Stable Scientific Reasoning Capability**: The model shows significant advantages on GPQA, a comprehensive scientific capability evaluation benchmark covering biology, physics, and chemistry. Performance on other scientific task evaluation benchmarks remains stable without significant fluctuations due to context expansion.
+- 👍 **User Feedback Data Flywheel**: Continuously optimizes model performance and user experience in real-world scenarios by incorporating user likes and dislikes feedback from the [ScienceOne](https://scienceone.cn) platform.
+
+## Deployment
+   
+We recommend using [vLLM](https://github.com/vllm-project/vllm) to deploy S1-Base for efficient inference and OpenAI-compatible API services.
+   
+**Quick start command example:**  
+```bash  
+pip install vllm  
+vllm serve <your_s1_model_path> --served-model-name s1-base-1.5-8b-128k
+```  
+The API request and response formats are basically consistent with OpenAI. Please refer to the official vLLM documentation for details.
+
+**Generate responses using OpenAI Python SDK:**
+```python
+from openai import OpenAI
+
+client = OpenAI(base_url="http://localhost:8000/v1", api_key="")
+resp = client.chat.completions.create(
+    model="s1-base-1.5-8b-128k",
+    messages=[{"role": "user", "content": "hi"}]
+)
+print(resp.choices[0].message.content)
+```
+
+**Generate responses using CURL:**
+```bash
+curl -X POST http://localhost:8000/v1/chat/completions -d '{"model": "s1-base-1.5-8b-128k", "messages":[{"role":"user", "content": "hi"}], "skip_special_tokens": false}' -H "Content-Type: application/json"
+```