mirror of
https://github.com/deepseek-ai/DeepSeek-V2
synced 2025-01-22 10:35:30 +00:00
388 lines
20 KiB
Markdown
388 lines
20 KiB
Markdown
<!-- markdownlint-disable first-line-h1 -->
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<!-- markdownlint-disable html -->
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<!-- markdownlint-disable no-duplicate-header -->
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<div align="center">
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<img src="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/figures/logo.svg?raw=true" width="60%" alt="DeepSeek-V2" />
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</div>
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<hr>
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<div align="center" style="line-height: 1;">
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<a href="https://www.deepseek.com/" target="_blank" style="margin: 2px;">
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<img alt="Homepage" src="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/figures/badge.svg?raw=true" style="display: inline-block; vertical-align: middle;"/>
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</a>
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<a href="https://chat.deepseek.com/" target="_blank" style="margin: 2px;">
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<img alt="Chat" src="https://img.shields.io/badge/🤖%20Chat-DeepSeek%20V2-536af5?color=536af5&logoColor=white" style="display: inline-block; vertical-align: middle;"/>
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</a>
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<a href="https://huggingface.co/deepseek-ai" target="_blank" style="margin: 2px;">
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<img alt="Hugging Face" src="https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-DeepSeek%20AI-ffc107?color=ffc107&logoColor=white" style="display: inline-block; vertical-align: middle;"/>
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</a>
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</div>
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<div align="center" style="line-height: 1;">
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<a href="https://discord.gg/Tc7c45Zzu5" target="_blank" style="margin: 2px;">
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<img alt="Discord" src="https://img.shields.io/badge/Discord-DeepSeek%20AI-7289da?logo=discord&logoColor=white&color=7289da" style="display: inline-block; vertical-align: middle;"/>
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</a>
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<a href="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/figures/qr.jpeg?raw=true" target="_blank" style="margin: 2px;">
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<img alt="Wechat" src="https://img.shields.io/badge/WeChat-DeepSeek%20AI-brightgreen?logo=wechat&logoColor=white" style="display: inline-block; vertical-align: middle;"/>
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</a>
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<a href="https://twitter.com/deepseek_ai" target="_blank" style="margin: 2px;">
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<img alt="Twitter Follow" src="https://img.shields.io/badge/Twitter-deepseek_ai-white?logo=x&logoColor=white" style="display: inline-block; vertical-align: middle;"/>
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</a>
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</div>
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<div align="center" style="line-height: 1;">
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<a href="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/LICENSE-CODE" style="margin: 2px;">
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<img alt="Code License" src="https://img.shields.io/badge/Code_License-MIT-f5de53?&color=f5de53" style="display: inline-block; vertical-align: middle;"/>
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</a>
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<a href="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/LICENSE-MODEL" style="margin: 2px;">
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<img alt="Model License" src="https://img.shields.io/badge/Model_License-Model_Agreement-f5de53?&color=f5de53" style="display: inline-block; vertical-align: middle;"/>
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</a>
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</div>
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<p align="center">
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<a href="#2-model-downloads">Model Download</a> |
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<a href="#3-evaluation-results">Evaluation Results</a> |
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<a href="#4-model-architecture">Model Architecture</a> |
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<a href="#6-api-platform">API Platform</a> |
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<a href="#8-license">License</a> |
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<a href="#9-citation">Citation</a>
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</p>
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<p align="center">
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<a href="https://arxiv.org/abs/2405.04434"><b>Paper Link</b>👁️</a>
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</p>
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# DeepSeek-V2: A Strong, Economical, and Efficient Mixture-of-Experts Language Model
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## 1. Introduction
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Today, we’re introducing DeepSeek-V2, a strong Mixture-of-Experts (MoE) language model characterized by economical training and efficient inference. It comprises 236B total parameters, of which 21B are activated for each token. Compared with DeepSeek 67B, DeepSeek-V2 achieves stronger performance, and meanwhile saves 42.5% of training costs, reduces the KV cache by 93.3%, and boosts the maximum generation throughput to 5.76 times.
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<p align="center">
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<div style="display: flex; justify-content: center;">
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<img src="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/figures/activationparameters.png?raw=true" style="height:300px; width:auto; margin-right:10px">
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<img src="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/figures/trainingcost.png?raw=true" style="height:300px; width:auto; margin-left:10px">
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</div>
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</p>
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We pretrained DeepSeek-V2 on a diverse and high-quality corpus comprising 8.1 trillion tokens. This comprehensive pretraining was followed by a process of Supervised Fine-Tuning (SFT) and Reinforcement Learning (RL) to fully unleash the model's capabilities. The evaluation results validate the effectiveness of our approach as DeepSeek-V2 achieves remarkable performance on both standard benchmarks and open-ended generation evaluation.
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## 2. News
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- 2024.05.16: We released the DeepSeek-V2-Lite.
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- 2024.05.06: We released the DeepSeek-V2.
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## 3. Model Downloads
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<div align="center">
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| **Model** | **#Total Params** | **#Activated Params** | **Context Length** | **Download** |
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| :------------: | :------------: | :------------: | :------------: | :------------: |
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| DeepSeek-V2-Lite | 16B | 2.4B | 32k | [🤗 HuggingFace](https://huggingface.co/deepseek-ai/DeepSeek-V2-Lite) |
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| DeepSeek-V2-Lite-Chat (SFT) | 16B | 2.4B | 32k | [🤗 HuggingFace](https://huggingface.co/deepseek-ai/DeepSeek-V2-Lite-Chat) |
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| DeepSeek-V2 | 236B | 21B | 128k | [🤗 HuggingFace](https://huggingface.co/deepseek-ai/DeepSeek-V2) |
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| DeepSeek-V2-Chat (RL) | 236B | 21B | 128k | [🤗 HuggingFace](https://huggingface.co/deepseek-ai/DeepSeek-V2-Chat) |
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</div>
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Due to the constraints of HuggingFace, the open-source code currently experiences slower performance than our internal codebase when running on GPUs with Huggingface. To facilitate the efficient execution of our model, we offer a dedicated vllm solution that optimizes performance for running our model effectively.
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## 4. Evaluation Results
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### Base Model
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#### Standard Benchmark (Models larger than 67B)
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<div align="center">
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| **Benchmark** | **Domain** | **LLaMA3 70B** | **Mixtral 8x22B** | **DeepSeek-V1 (Dense-67B)** | **DeepSeek-V2 (MoE-236B)** |
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|:-----------:|:--------:|:------------:|:---------------:|:-------------------------:|:------------------------:|
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| **MMLU** | English | 78.9 | 77.6 | 71.3 | 78.5 |
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| **BBH** | English | 81.0 | 78.9 | 68.7 | 78.9 |
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| **C-Eval** | Chinese | 67.5 | 58.6 | 66.1 | 81.7 |
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| **CMMLU** | Chinese | 69.3 | 60.0 | 70.8 | 84.0 |
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| **HumanEval** | Code | 48.2 | 53.1 | 45.1 | 48.8 |
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| **MBPP** | Code | 68.6 | 64.2 | 57.4 | 66.6 |
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| **GSM8K** | Math | 83.0 | 80.3 | 63.4 | 79.2 |
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| **Math** | Math | 42.2 | 42.5 | 18.7 | 43.6 |
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</div>
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#### Standard Benchmark (Models smaller than 16B)
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<div align="center">
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| **Benchmark** | **Domain** | **DeepSeek 7B (Dense)** | **DeepSeekMoE 16B** | **DeepSeek-V2-Lite (MoE-16B)** |
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|:-------------:|:----------:|:--------------:|:-----------------:|:--------------------------:|
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| **Architecture** | - | MHA+Dense | MHA+MoE | MLA+MoE |
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| **MMLU** | English | 48.2 | 45.0 | 58.3 |
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| **BBH** | English | 39.5 | 38.9 | 44.1 |
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| **C-Eval** | Chinese | 45.0 | 40.6 | 60.3 |
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| **CMMLU** | Chinese | 47.2 | 42.5 | 64.3 |
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| **HumanEval** | Code | 26.2 | 26.8 | 29.9 |
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| **MBPP** | Code | 39.0 | 39.2 | 43.2 |
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| **GSM8K** | Math | 17.4 | 18.8 | 41.1 |
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| **Math** | Math | 3.3 | 4.3 | 17.1 |
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</div>
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For more evaluation details, such as few-shot settings and prompts, please check our paper.
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#### Context Window
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<p align="center">
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<img width="80%" src="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/figures/niah.png?raw=true">
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</p>
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Evaluation results on the ``Needle In A Haystack`` (NIAH) tests. DeepSeek-V2 performs well across all context window lengths up to **128K**.
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### Chat Model
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#### Standard Benchmark (Models larger than 67B)
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<div align="center">
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| Benchmark | Domain | QWen1.5 72B Chat | Mixtral 8x22B | LLaMA3 70B Instruct | DeepSeek-V1 Chat (SFT) | DeepSeek-V2 Chat (SFT) | DeepSeek-V2 Chat (RL) |
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|:-----------:|:----------------:|:------------------:|:---------------:|:---------------------:|:-------------:|:-----------------------:|:----------------------:|
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| **MMLU** | English | 76.2 | 77.8 | 80.3 | 71.1 | 78.4 | 77.8 |
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| **BBH** | English | 65.9 | 78.4 | 80.1 | 71.7 | 81.3 | 79.7 |
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| **C-Eval** | Chinese | 82.2 | 60.0 | 67.9 | 65.2 | 80.9 | 78.0 |
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| **CMMLU** | Chinese | 82.9 | 61.0 | 70.7 | 67.8 | 82.4 | 81.6 |
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| **HumanEval** | Code | 68.9 | 75.0 | 76.2 | 73.8 | 76.8 | 81.1 |
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| **MBPP** | Code | 52.2 | 64.4 | 69.8 | 61.4 | 70.4 | 72.0 |
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| **LiveCodeBench (0901-0401)** | Code | 18.8 | 25.0 | 30.5 | 18.3 | 28.7 | 32.5 |
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| **GSM8K** | Math | 81.9 | 87.9 | 93.2 | 84.1 | 90.8 | 92.2 |
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| **Math** | Math | 40.6 | 49.8 | 48.5 | 32.6 | 52.7 | 53.9 |
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</div>
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#### Standard Benchmark (Models smaller than 16B)
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<div align="center">
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| Benchmark | Domain | DeepSeek 7B Chat (SFT) | DeepSeekMoE 16B Chat (SFT) | DeepSeek-V2-Lite 16B Chat (SFT) |
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|:-----------:|:----------------:|:------------------:|:---------------:|:---------------------:|
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| **MMLU** | English | 49.7 | 47.2 | 55.7 |
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| **BBH** | English | 43.1 | 42.2 | 48.1 |
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| **C-Eval** | Chinese | 44.7 | 40.0 | 60.1 |
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| **CMMLU** | Chinese | 51.2 | 49.3 | 62.5 |
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| **HumanEval** | Code | 45.1 | 45.7 | 57.3 |
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| **MBPP** | Code | 39.0 | 46.2 | 45.8 |
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| **GSM8K** | Math | 62.6 | 62.2 | 72.0 |
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| **Math** | Math | 14.7 | 15.2 | 27.9 |
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</div>
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#### English Open Ended Generation Evaluation
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We evaluate our model on AlpacaEval 2.0 and MTBench, showing the competitive performance of DeepSeek-V2-Chat-RL on English conversation generation.
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<p align="center">
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<img width="50%" src="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/figures/mtbench.png?raw=true" />
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</p>
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#### Chinese Open Ended Generation Evaluation
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**Alignbench** (https://arxiv.org/abs/2311.18743)
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<div align="center">
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| **模型** | **开源/闭源** | **总分** | **中文推理** | **中文语言** |
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| :---: | :---: | :---: | :---: | :---: |
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| gpt-4-1106-preview | 闭源 | 8.01 | 7.73 | 8.29 |
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| DeepSeek-V2 Chat (RL) | 开源 | 7.91 | 7.45 | 8.36 |
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| erniebot-4.0-202404 (文心一言) | 闭源 | 7.89 | 7.61 | 8.17 |
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| DeepSeek-V2 Chat (SFT) | 开源 | 7.74 | 7.30 | 8.17 |
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| gpt-4-0613 | 闭源 | 7.53 | 7.47 | 7.59 |
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| erniebot-4.0-202312 (文心一言) | 闭源 | 7.36 | 6.84 | 7.88 |
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| moonshot-v1-32k-202404 (月之暗面) | 闭源 | 7.22 | 6.42 | 8.02 |
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| Qwen1.5-72B-Chat (通义千问) | 开源 | 7.19 | 6.45 | 7.93 |
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| DeepSeek-67B-Chat | 开源 | 6.43 | 5.75 | 7.11 |
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| Yi-34B-Chat (零一万物) | 开源 | 6.12 | 4.86 | 7.38 |
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| gpt-3.5-turbo-0613 | 闭源 | 6.08 | 5.35 | 6.71 |
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| DeepSeek-V2-Lite 16B Chat | 开源 | 6.01 | 4.71 | 7.32 |
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</div>
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#### Coding Benchmarks
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We evaluate our model on LiveCodeBench (0901-0401), a benchmark designed for live coding challenges. As illustrated, DeepSeek-V2 demonstrates considerable proficiency in LiveCodeBench, achieving a Pass@1 score that surpasses several other sophisticated models. This performance highlights the model's effectiveness in tackling live coding tasks.
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<p align="center">
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<img width="50%" src="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/figures/code_benchmarks.png?raw=true">
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</p>
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## 5. Model Architecture
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DeepSeek-V2 adopts innovative architectures to guarantee economical training and efficient inference：
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- For attention, we design MLA (Multi-head Latent Attention), which utilizes low-rank key-value union compression to eliminate the bottleneck of inference-time key-value cache, thus supporting efficient inference.
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- For Feed-Forward Networks (FFNs), we adopt DeepSeekMoE architecture, a high-performance MoE architecture that enables training stronger models at lower costs.
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<p align="center">
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<img width="90%" src="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/figures/architecture.png?raw=true" />
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</p>
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## 6. Chat Website
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You can chat with the DeepSeek-V2 on DeepSeek's official website: [chat.deepseek.com](https://chat.deepseek.com/sign_in)
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## 7. API Platform
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We also provide OpenAI-Compatible API at DeepSeek Platform: [platform.deepseek.com](https://platform.deepseek.com/). Sign up for over millions of free tokens. And you can also pay-as-you-go at an unbeatable price.
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<p align="center">
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<img width="40%" src="https://github.com/deepseek-ai/DeepSeek-V2/blob/main/figures/model_price.png?raw=true">
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</p>
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## 8. How to run locally
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**To utilize DeepSeek-V2 in BF16 format for inference, 80GB*8 GPUs are required.**
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### Inference with Huggingface's Transformers
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You can directly employ [Huggingface's Transformers](https://github.com/huggingface/transformers) for model inference.
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#### Text Completion
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```python
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import torch
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from transformers import AutoTokenizer, AutoModelForCausalLM, GenerationConfig
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model_name = "deepseek-ai/DeepSeek-V2"
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tokenizer = AutoTokenizer.from_pretrained(model_name, trust_remote_code=True)
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# `max_memory` should be set based on your devices
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max_memory = {i: "75GB" for i in range(8)}
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# `device_map` cannot be set to `auto`
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model = AutoModelForCausalLM.from_pretrained(model_name, trust_remote_code=True, device_map="sequential", torch_dtype=torch.bfloat16, max_memory=max_memory, attn_implementation="eager")
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model.generation_config = GenerationConfig.from_pretrained(model_name)
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model.generation_config.pad_token_id = model.generation_config.eos_token_id
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text = "An attention function can be described as mapping a query and a set of key-value pairs to an output, where the query, keys, values, and output are all vectors. The output is"
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inputs = tokenizer(text, return_tensors="pt")
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outputs = model.generate(**inputs.to(model.device), max_new_tokens=100)
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result = tokenizer.decode(outputs[0], skip_special_tokens=True)
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print(result)
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```
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#### Chat Completion
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```python
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import torch
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from transformers import AutoTokenizer, AutoModelForCausalLM, GenerationConfig
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model_name = "deepseek-ai/DeepSeek-V2-Chat"
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tokenizer = AutoTokenizer.from_pretrained(model_name, trust_remote_code=True)
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# `max_memory` should be set based on your devices
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max_memory = {i: "75GB" for i in range(8)}
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# `device_map` cannot be set to `auto`
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model = AutoModelForCausalLM.from_pretrained(model_name, trust_remote_code=True, device_map="sequential", torch_dtype=torch.bfloat16, max_memory=max_memory, attn_implementation="eager")
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model.generation_config = GenerationConfig.from_pretrained(model_name)
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model.generation_config.pad_token_id = model.generation_config.eos_token_id
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messages = [
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{"role": "user", "content": "Write a piece of quicksort code in C++"}
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]
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input_tensor = tokenizer.apply_chat_template(messages, add_generation_prompt=True, return_tensors="pt")
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outputs = model.generate(input_tensor.to(model.device), max_new_tokens=100)
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result = tokenizer.decode(outputs[0][input_tensor.shape[1]:], skip_special_tokens=True)
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print(result)
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```
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The complete chat template can be found within `tokenizer_config.json` located in the huggingface model repository.
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An example of chat template is as belows:
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```bash
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<｜begin▁of▁sentence｜>User: {user_message_1}
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Assistant: {assistant_message_1}<｜end▁of▁sentence｜>User: {user_message_2}
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Assistant:
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```
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You can also add an optional system message:
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```bash
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<｜begin▁of▁sentence｜>{system_message}
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User: {user_message_1}
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Assistant: {assistant_message_1}<｜end▁of▁sentence｜>User: {user_message_2}
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Assistant:
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```
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### Inference with SGLang (recommended)
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[SGLang](https://github.com/sgl-project/sglang) currently supports MLA optimizations, FP8 (W8A8), FP8 KV Cache, and Torch Compile, offering the best latency and throughput among open-source frameworks. Here are some example commands to launch an OpenAI API-compatible server:
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```bash
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# BF16, tensor parallelism = 8
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python3 -m sglang.launch_server --model deepseek-ai/DeepSeek-V2-Chat --tp 8 --trust-remote-code
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# BF16, w/ torch.compile (The compilation can take several minutes)
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python3 -m sglang.launch_server --model deepseek-ai/DeepSeek-V2-Lite-Chat --trust-remote-code --enable-torch-compile
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# FP8, tensor parallelism = 8, FP8 KV cache
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python3 -m sglang.launch_server --model deepseek-ai/DeepSeek-V2-Chat --tp 8 --trust-remote-code --quant fp8 --kv-cache-dtype fp8_e5m2
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```
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After launching the server, you can query it with OpenAI API
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```
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import openai
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client = openai.Client(
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base_url="http://127.0.0.1:30000/v1", api_key="EMPTY")
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# Chat completion
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response = client.chat.completions.create(
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model="default",
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messages=[
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{"role": "system", "content": "You are a helpful AI assistant"},
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{"role": "user", "content": "List 3 countries and their capitals."},
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],
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temperature=0,
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max_tokens=64,
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)
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print(response)
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```
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### Inference with vLLM (recommended)
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To utilize [vLLM](https://github.com/vllm-project/vllm) for model inference, please merge this Pull Request into your vLLM codebase: https://github.com/vllm-project/vllm/pull/4650.
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```python
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from transformers import AutoTokenizer
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from vllm import LLM, SamplingParams
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max_model_len, tp_size = 8192, 8
|
||
model_name = "deepseek-ai/DeepSeek-V2-Chat"
|
||
tokenizer = AutoTokenizer.from_pretrained(model_name)
|
||
llm = LLM(model=model_name, tensor_parallel_size=tp_size, max_model_len=max_model_len, trust_remote_code=True, enforce_eager=True)
|
||
sampling_params = SamplingParams(temperature=0.3, max_tokens=256, stop_token_ids=[tokenizer.eos_token_id])
|
||
|
||
messages_list = [
|
||
[{"role": "user", "content": "Who are you?"}],
|
||
[{"role": "user", "content": "Translate the following content into Chinese directly: DeepSeek-V2 adopts innovative architectures to guarantee economical training and efficient inference."}],
|
||
[{"role": "user", "content": "Write a piece of quicksort code in C++."}],
|
||
]
|
||
|
||
prompt_token_ids = [tokenizer.apply_chat_template(messages, add_generation_prompt=True) for messages in messages_list]
|
||
|
||
outputs = llm.generate(prompt_token_ids=prompt_token_ids, sampling_params=sampling_params)
|
||
|
||
generated_text = [output.outputs[0].text for output in outputs]
|
||
print(generated_text)
|
||
```
|
||
|
||
### LangChain Support
|
||
Since our API is compatible with OpenAI, you can easily use it in [langchain](https://www.langchain.com/).
|
||
Here is an example:
|
||
|
||
```
|
||
from langchain_openai import ChatOpenAI
|
||
llm = ChatOpenAI(
|
||
model='deepseek-chat',
|
||
openai_api_key=<your-deepseek-api-key>,
|
||
openai_api_base='https://api.deepseek.com/v1',
|
||
temperature=0.85,
|
||
max_tokens=8000)
|
||
```
|
||
## 9. License
|
||
This code repository is licensed under [the MIT License](LICENSE-CODE). The use of DeepSeek-V2 Base/Chat models is subject to [the Model License](LICENSE-MODEL). DeepSeek-V2 series (including Base and Chat) supports commercial use.
|
||
|
||
## 10. Citation
|
||
```
|
||
@misc{deepseekv2,
|
||
title={DeepSeek-V2: A Strong, Economical, and Efficient Mixture-of-Experts Language Model},
|
||
author={DeepSeek-AI},
|
||
year={2024},
|
||
eprint={2405.04434},
|
||
archivePrefix={arXiv},
|
||
primaryClass={cs.CL}
|
||
}
|
||
```
|
||
|
||
## 11. Contact
|
||
If you have any questions, please raise an issue or contact us at [service@deepseek.com](service@deepseek.com).
|