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Model Download | Evaluation Results | API Platform | How to Use | License | Citation

Paper Link👁️

DeepSeek-Coder-V2: Breaking the Barrier of Closed-Source Models in Code Intelligence

1. Introduction

We present DeepSeek-Coder-V2, an open-source Mixture-of-Experts (MoE) code language model that achieves performance comparable to GPT4-Turbo in code-specific tasks. Specifically, DeepSeek-Coder-V2 is further pre-trained from an intermediate checkpoint of DeepSeek-V2 with additional 6 trillion tokens. Through this continued pre-training, DeepSeek-Coder-V2 substantially enhances the coding and mathematical reasoning capabilities of DeepSeek-V2, while maintaining comparable performance in general language tasks. Compared to DeepSeek-Coder-33B, DeepSeek-Coder-V2 demonstrates significant advancements in various aspects of code-related tasks, as well as reasoning and general capabilities. Additionally, DeepSeek-Coder-V2 expands its support for programming languages from 86 to 338, while extending the context length from 16K to 128K.

In standard benchmark evaluations, DeepSeek-Coder-V2 achieves superior performance compared to closed-source models such as GPT4-Turbo, Claude 3 Opus, and Gemini 1.5 Pro in coding and math benchmarks. The list of supported programming languages can be found here.

2. Model Downloads

We release the DeepSeek-Coder-V2 with 16B and 236B parameters based on the DeepSeekMoE framework, which has actived parameters of only 2.4B and 21B , including base and instruct models, to the public.

Model	#Total Params	#Active Params	Context Length	Download
DeepSeek-Coder-V2-Lite-Base	16B	2.4B	128k	🤗 HuggingFace
DeepSeek-Coder-V2-Lite-Instruct	16B	2.4B	128k	🤗 HuggingFace
DeepSeek-Coder-V2-Base	236B	21B	128k	🤗 HuggingFace
DeepSeek-Coder-V2-Instruct	236B	21B	128k	🤗 HuggingFace

3. Evaluation Results

3.1 Code Generation

	#TP	#AP	HumanEval	MBPP+	LiveCodeBench	USACO
Closed-Source Models
Gemini-1.5-Pro	-	-	83.5	74.6	34.1	4.9
Claude-3-Opus	-	-	84.2	72.0	34.6	7.8
GPT-4-Turbo-1106	-	-	87.8	69.3	37.1	11.1
GPT-4-Turbo-0409	-	-	88.2	72.2	45.7	12.3
GPT-4o-0513	-	-	91.0	73.5	43.4	18.8
Open-Source Models
CodeStral	22B	22B	78.1	68.2	31.0	4.6
DeepSeek-Coder-Instruct	33B	33B	79.3	70.1	22.5	4.2
Llama3-Instruct	70B	70B	81.1	68.8	28.7	3.3
DeepSeek-Coder-V2-Lite-Instruct	16B	2.4B	81.1	68.8	24.3	6.5
DeepSeek-Coder-V2-Instruct	236B	21B	90.2	76.2	43.4	12.1

3.2 Code Completion

Model	#TP	#AP	RepoBench (Python)	RepoBench (Java)	HumanEval FIM
CodeStral	22B	22B	46.1	45.7	83.0
DeepSeek-Coder-Base	7B	7B	36.2	43.3	86.1
DeepSeek-Coder-Base	33B	33B	39.1	44.8	86.4
DeepSeek-Coder-V2-Lite-Base	16B	2.4B	38.9	43.3	86.4

3.3 Code Fixing

	#TP	#AP	Defects4J	SWE-Bench	Aider
Closed-Source Models
Gemini-1.5-Pro	-	-	18.6	19.3	57.1
Claude-3-Opus	-	-	25.5	11.7	68.4
GPT-4-Turbo-1106	-	-	22.8	22.7	65.4
GPT-4-Turbo-0409	-	-	24.3	18.3	63.9
GPT-4o-0513	-	-	26.1	26.7	72.9
Open-Source Models
CodeStral	22B	22B	17.8	2.7	51.1
DeepSeek-Coder-Instruct	33B	33B	11.3	0.0	54.5
Llama3-Instruct	70B	70B	16.2	-	49.2
DeepSeek-Coder-V2-Lite-Instruct	16B	2.4B	9.2	0.0	44.4
DeepSeek-Coder-V2-Instruct	236B	21B	21.0	12.7	73.7

3.4 Mathematical Reasoning

	#TP	#AP	GSM8K	MATH	AIME 2024	Math Odyssey
Closed-Source Models
Gemini-1.5-Pro	-	-	90.8	67.7	2/30	45.0
Claude-3-Opus	-	-	95.0	60.1	2/30	40.6
GPT-4-Turbo-1106	-	-	91.4	64.3	1/30	49.1
GPT-4-Turbo-0409	-	-	93.7	73.4	3/30	46.8
GPT-4o-0513	-	-	95.8	76.6	2/30	53.2
Open-Source Models
Llama3-Instruct	70B	70B	93.0	50.4	1/30	27.9
DeepSeek-Coder-V2-Lite-Instruct	16B	2.4B	86.4	61.8	0/30	44.4
DeepSeek-Coder-V2-Instruct	236B	21B	94.9	75.7	4/30	53.7

3.5 General Natural Language

Benchmark	Domain	DeepSeek-V2-Lite Chat	DeepSeek-Coder-V2-Lite Instruct	DeepSeek-V2 Chat	DeepSeek-Coder-V2 Instruct
BBH	English	48.1	61.2	79.7	83.9
MMLU	English	55.7	60.1	78.1	79.2
ARC-Easy	English	86.1	88.9	98.1	97.4
ARC-Challenge	English	73.4	77.4	92.3	92.8
TriviaQA	English	65.2	59.5	86.7	82.3
NaturalQuestions	English	35.5	30.8	53.4	47.5
AGIEval	English	42.8	28.7	61.4	60
CLUEWSC	Chinese	80.0	76.5	89.9	85.9
C-Eval	Chinese	60.1	61.6	78.0	79.4
CMMLU	Chinese	62.5	62.7	81.6	80.9
Arena-Hard	-	11.4	38.1	41.6	65.0
AlpaceEval 2.0	-	16.9	17.7	38.9	36.9
MT-Bench	-	7.37	7.81	8.97	8.77
Alignbench	-	6.02	6.83	7.91	7.84

3.6 Context Window

Evaluation results on the Needle In A Haystack (NIAH) tests. DeepSeek-Coder-V2 performs well across all context window lengths up to 128K.

4. Chat Website

You can chat with the DeepSeek-Coder-V2 on DeepSeek's official website: coder.deepseek.com

5. API Platform

We also provide OpenAI-Compatible API at DeepSeek Platform: platform.deepseek.com, and you can also pay-as-you-go at an unbeatable price.

6. How to run locally

Here, we provide some examples of how to use DeepSeek-Coder-V2-Lite model. If you want to utilize DeepSeek-Coder-V2 in BF16 format for inference, 80GB*8 GPUs are required.

Inference with Huggingface's Transformers

You can directly employ Huggingface's Transformers for model inference.

Code Completion

from transformers import AutoTokenizer, AutoModelForCausalLM
import torch
tokenizer = AutoTokenizer.from_pretrained("deepseek-ai/DeepSeek-Coder-V2-Lite-Base", trust_remote_code=True)
model = AutoModelForCausalLM.from_pretrained("deepseek-ai/DeepSeek-Coder-V2-Lite-Base", trust_remote_code=True, torch_dtype=torch.bfloat16).cuda()
input_text = "#write a quick sort algorithm"
inputs = tokenizer(input_text, return_tensors="pt").to(model.device)
outputs = model.generate(**inputs, max_length=128)
print(tokenizer.decode(outputs[0], skip_special_tokens=True))

Code Insertion

from transformers import AutoTokenizer, AutoModelForCausalLM
import torch
tokenizer = AutoTokenizer.from_pretrained("deepseek-ai/DeepSeek-Coder-V2-Lite-Base", trust_remote_code=True)
model = AutoModelForCausalLM.from_pretrained("deepseek-ai/DeepSeek-Coder-V2-Lite-Base", trust_remote_code=True, torch_dtype=torch.bfloat16).cuda()
input_text = """<｜fim▁begin｜>def quick_sort(arr):
    if len(arr) <= 1:
        return arr
    pivot = arr[0]
    left = []
    right = []
<｜fim▁hole｜>
        if arr[i] < pivot:
            left.append(arr[i])
        else:
            right.append(arr[i])
    return quick_sort(left) + [pivot] + quick_sort(right)<｜fim▁end｜>"""
inputs = tokenizer(input_text, return_tensors="pt").to(model.device)
outputs = model.generate(**inputs, max_length=128)
print(tokenizer.decode(outputs[0], skip_special_tokens=True)[len(input_text):])

Chat Completion

from transformers import AutoTokenizer, AutoModelForCausalLM
import torch
tokenizer = AutoTokenizer.from_pretrained("deepseek-ai/DeepSeek-Coder-V2-Lite-Instruct", trust_remote_code=True)
model = AutoModelForCausalLM.from_pretrained("deepseek-ai/DeepSeek-Coder-V2-Lite-Instruct", trust_remote_code=True, torch_dtype=torch.bfloat16).cuda()
messages=[
    { 'role': 'user', 'content': "write a quick sort algorithm in python."}
]
inputs = tokenizer.apply_chat_template(messages, add_generation_prompt=True, return_tensors="pt").to(model.device)
# tokenizer.eos_token_id is the id of <｜end▁of▁sentence｜> token
outputs = model.generate(inputs, max_new_tokens=512, do_sample=False, top_k=50, top_p=0.95, num_return_sequences=1, eos_token_id=tokenizer.eos_token_id)
print(tokenizer.decode(outputs[0][len(inputs[0]):], skip_special_tokens=True))

The complete chat template can be found within tokenizer_config.json located in the huggingface model repository.

An example of chat template is as belows:

<｜begin▁of▁sentence｜>User: {user_message_1}

Assistant: {assistant_message_1}<｜end▁of▁sentence｜>User: {user_message_2}

Assistant:

You can also add an optional system message:

<｜begin▁of▁sentence｜>{system_message}

User: {user_message_1}

Assistant: {assistant_message_1}<｜end▁of▁sentence｜>User: {user_message_2}

Assistant:

In the last round of dialogue, note that "Assistant:" has no space after the colon. Adding a space might cause the following issues on the 16B-Lite model:

• English questions receiving Chinese responses.
• Responses containing garbled text.
• Responses repeating excessively.

Older versions of Ollama had this bug (see #12), but it has been fixed in the latest version.

Inference with SGLang (recommended)

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:

# BF16, tensor parallelism = 8
python3 -m sglang.launch_server --model deepseek-ai/DeepSeek-Coder-V2-Instruct --tp 8 --trust-remote-code

# BF16, w/ torch.compile (The compilation can take several minutes)
python3 -m sglang.launch_server --model deepseek-ai/DeepSeek-Coder-V2-Lite-Instruct --trust-remote-code --enable-torch-compile

# FP8, tensor parallelism = 8, FP8 KV cache
python3 -m sglang.launch_server --model neuralmagic/DeepSeek-Coder-V2-Instruct-FP8 --tp 8 --trust-remote-code --kv-cache-dtype fp8_e5m2

After launching the server, you can query it with OpenAI API

import openai
client = openai.Client(
    base_url="http://127.0.0.1:30000/v1", api_key="EMPTY")

# Chat completion
response = client.chat.completions.create(
    model="default",
    messages=[
        {"role": "system", "content": "You are a helpful AI assistant"},
        {"role": "user", "content": "List 3 countries and their capitals."},
    ],
    temperature=0,
    max_tokens=64,
)
print(response)

Inference with vLLM (recommended)

To utilize vLLM for model inference, please merge this Pull Request into your vLLM codebase: vllm-project/vllm#4650.

from transformers import AutoTokenizer
from vllm import LLM, SamplingParams

max_model_len, tp_size = 8192, 1
model_name = "deepseek-ai/DeepSeek-Coder-V2-Lite-Instruct"
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": "write a quick sort algorithm in python."}],
    [{"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)

7. License

This code repository is licensed under the MIT License. The use of DeepSeek-Coder-V2 Base/Instruct models is subject to the Model License. DeepSeek-Coder-V2 series (including Base and Instruct) supports commercial use.

8. Citation

@article{zhu2024deepseek,
  title={DeepSeek-Coder-V2: Breaking the Barrier of Closed-Source Models in Code Intelligence},
  author={Zhu, Qihao and Guo, Daya and Shao, Zhihong and Yang, Dejian and Wang, Peiyi and Xu, Runxin and Wu, Y and Li, Yukun and Gao, Huazuo and Ma, Shirong and others},
  journal={arXiv preprint arXiv:2406.11931},
  year={2024}
}

9. Contact

If you have any questions, please raise an issue or contact us at service@deepseek.com.