Kimi-Dev - Dark Side of the Moon Open Source Code Modeling
What's Kimi-Dev?
Kimi-Dev is an open source code model from Moonshot AI designed for software engineering with a 72B parameter count. The model has a powerful BugFixer function, which can automatically locate and fix code errors, and the model provides TestWriter capability to generate high-quality unit tests for existing code to ensure code quality. Based on reinforcement learning and self-gaming mechanism, Kimi-Dev achieves a performance of 60.4% on SWE-bench Verified dataset, surpassing other open source models and becoming the current SOTA. Kimi-Dev has been widely used in programming education and open source project maintenance, helping beginners to learn programming quickly, and helping open source projects to improve quality and stability. Kimi-Dev is widely used in programming education and open source project maintenance, helping beginners learn programming quickly and helping open source projects improve quality and stability.

Kimi-Dev's main functions
- Code Fixer (BugFixer): Automatically detect vulnerabilities and errors in code, generate fixes, and quickly resolve issues during development.
- Test code generation (TestWriter): Automatically generate unit test code for existing code to ensure correct and stable code functionality.
- Development Process Automation: Introducing reinforcement learning and self-gaming mechanisms to efficiently coordinate code fixing and testing capabilities and improve overall development efficiency.
- Development Tools Integration: In the future, we plan to work seamlessly with mainstream IDEs, version control systems, and CI/CD pipelines to deeply integrate into the development workflow.
Kimi-Dev's performance
- In the SWE-bench Verified dataset::
- Compared to the open source model, the model achieves a performance of 60.4%, outperforming all other open source models and becoming the SOTA (State of the Art) among current open source models.
- Compared to closed-source models, Kimi-Dev has come close to or even surpassed some closed-source models in some aspects, showing strong competitiveness.

Kimi-Dev's official website address
- Project website::https://moonshotai.github.io/Kimi-Dev/
- GitHub repository::https://github.com/MoonshotAI/Kimi-Dev
- HuggingFace Model Library::https://huggingface.co/moonshotai/Kimi-Dev-72B
How to use Kimi-Dev
- Download model weights and codes::
- Download the model's code and associated scripts from the GitHub repository.
- Download model weights from the Hugging Face model library.
- Installation of dependencies: Install the necessary dependencies in your local environment. the Kimi-Dev code repository provides a requirements.txt file to install the dependencies based on the following commands:
pip install -r requirements.txt
- Configuration environment: Make sure Python is installed on your system (recommended version 3.8 or higher). Set up a virtual environment (optional):
python -m venv kimi-dev-env
source kimi-dev-env/bin/activate # Linux/Mac
kimi-dev-env\Scripts\activate # Windows
- Installation of deep learning frameworks: Install the corresponding framework according to the model requirements.
- Loading Models: Load the model weights according to the code example provided. Example:
from transformers import AutoModelForSeq2SeqLM, AutoTokenizer
model_name = "moonshotai/Kimi-Dev-72B"
tokenizer = AutoTokenizer.from_pretrained(model_name)
model = AutoModelForSeq2SeqLM.from_pretrained(model_name)
- Using the Model Function::
- Code Fixer (BugFixer): Input the problematic code snippet into the model, and the model automatically generates the repaired code. Example code:
buggy_code = "def add(a, b): return a - b" # 错误的代码
inputs = tokenizer(buggy_code, return_tensors="pt")
outputs = model.generate(**inputs)
fixed_code = tokenizer.decode(outputs[0], skip_special_tokens=True)
print("Fixed Code:", fixed_code)
- Test code generation (TestWriter): Enter the code of the function that needs to generate test code, and the model automatically generates the corresponding unit test code.
code_to_test = "def add(a, b): return a + b"
inputs = tokenizer(code_to_test, return_tensors="pt")
outputs = model.generate(**inputs)
test_code = tokenizer.decode(outputs[0], skip_special_tokens=True)
print("Test Code:", test_code)
Kimi-Dev's core strengths
- powerful performance: With 72B parameter count, Kimi-Dev achieves a performance of 60.41 TP3T on the SWE-bench Verified dataset, outperforming other open source models as the current SOTA.
- Efficient Code Fixing: Based on reinforcement learning and self-gaming mechanisms, Kimi-Dev can automatically locate and fix code errors, significantly improving repair efficiency.
- Test Code Generation: Generate high-quality unit test code for existing code, improve test coverage and reduce developers' workload in writing test code.
- Open Source and Flexibility: Based on the MIT protocol open source , users are free to use , modify and distribute , suitable for a variety of development needs .
- Development Tools Integration: In the future, it will seamlessly integrate with mainstream IDEs, version control systems and CI/CD pipelines to improve development efficiency.
Who Kimi-Dev is for
- Software Development Engineer: Need to quickly fix code bugs, generate test code, and improve development efficiency.
- Programming for beginners: Based on the generation of sample code and test code to assist learning, rapid mastery of programming skills.
- Open source project maintainers: Help users quickly fix bugs, optimize code, and improve project quality and stability.
- Enterprise Development Team: Used in enterprise-level development projects to reduce development costs and improve overall development efficiency.
- Technical researchers: Research and extension based on its open source code and models to explore new technological directions.
- educator: Used in programming instruction to help students better understand and practice code development and testing.
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