Kat Dev - AI-Powered Code Intelligence by Kuaishou
Kat Dev is a family of large language models specialized for software engineering and coding tasks.
Achieving 74.6% on SWE-Bench benchmark, Kat Dev models act like AI engineers capable of understanding complex requirements and generating high-quality code.
💡 Top 5 open-source model on SWE-Bench benchmark
Kat Dev powers modern AI coding workflows
What is Kat Dev
Kat Dev is an AI-driven code intelligence offering developed by Kuaishou's Kwaipilot team. It's a family of large language models specialized for software engineering and coding tasks, designed to act like AI engineers.
Large-Scale Code LLM
KAT-Dev models are high-parameter LLMs (32B or 72B) trained specifically for coding with state-of-the-art architectures and extensive reinforcement learning.
High Performance on Code Tasks
KAT-Dev-32B scored 62.4% on SWE-Bench Verified test (ranked 5th among open models), while KAT-Dev-72B-Exp achieved 74.6%, topping the open-source leaderboard.
Agentic RL Training
KAT-Dev employs multi-stage agentic training with tool use, multi-turn dialogue, and coding knowledge, followed by supervised fine-tuning and reinforcement learning.
Open-Source Model (Apache-2.0)
The primary KAT-Dev models (32B and 72B) are released under Apache 2.0 license, encouraging community use and research with free access for developers worldwide.
Why Choose Kat Dev for AI Coding
Experience the future of AI-powered software development with Kat Dev's cutting-edge code intelligence models designed for modern developers and teams.
How to Get Started with Kat Dev
Begin your AI coding journey with Kat Dev in three simple steps:
Download the Model
Get KAT-Dev-32B or KAT-Dev-72B-Exp from Hugging Face. Both models are open-source and free to use under Apache-2.0 license.
Integrate with Your Workflow
Use the Transformers library or vLLM for local deployment. Access KAT-Coder via StreamLake console for enterprise-grade API access.
Start AI Coding
Generate code, fix bugs, implement features, and optimize performance with Kat Dev's advanced AI code intelligence capabilities.
Scale Your Development
Deploy Kat Dev models in production environments, integrate with CI/CD pipelines, and build custom AI coding assistants for your team.
Key Features of Kat Dev AI Coding
Everything you need for advanced AI-powered software development and code intelligence.
Feature Implementation & Enhancement
Generate new code features from high-level descriptions with multi-step planning and execution capabilities.
Bug Fixing & Refactoring
Identify and correct bugs, rewrite code for clarity or performance with intelligent code analysis.
Performance Optimization
Suggest code optimizations including algorithmic improvements and efficiency enhancements.
Test Case Generation
Write comprehensive unit tests and generate input data to validate code functionality.
Code Understanding & Documentation
Explain complex code, generate comments, and create documentation for existing codebases.
Multi-Agent Workflows
Coordinate multiple AI agents for complex software engineering tasks and project management.
Kat Dev Performance Metrics
Leading the open-source AI coding revolution with proven benchmark results.
74.6% SWE-Bench Score (KAT-Dev-72B-Exp)
SWE-Bench Score (KAT-Dev-72B-Exp)
62.4% SWE-Bench Score (KAT-Dev-32B)
SWE-Bench Score (KAT-Dev-32B)
32B/72B Model Parameters
Model Parameters
Apache-2.0 Open Source License
Open Source License
What Developers Say About Kat Dev
Hear from developers, researchers, and teams who transformed their coding workflow with Kat Dev's AI intelligence.
Kat Dev has revolutionized our development process. The 74.6% SWE-Bench score is impressive, and the model actually understands complex requirements. It's like having a senior engineer available 24/7!
Sarah Chen, Senior Software Engineer at TechCorp
Sarah Chen
Senior Software Engineer at TechCorp
The agentic RL training approach in Kat Dev is groundbreaking. The model can plan multi-step solutions and use tools effectively. It's a significant advancement in AI coding capabilities.
Michael Rodriguez, AI Research Scientist
Michael Rodriguez
AI Research Scientist
As a startup, we needed powerful AI coding tools without the enterprise costs. Kat Dev's open-source models give us access to state-of-the-art code intelligence. The Apache-2.0 license is perfect for our needs.
Emily Wang, Startup CTO
Emily Wang
Startup CTO
KAT-Coder via StreamLake provides enterprise-grade security and performance. The integration with our existing CI/CD pipeline has improved our code quality and development velocity significantly.
David Park, Enterprise Development Lead
David Park
Enterprise Development Lead
The Hugging Face integration makes Kat Dev incredibly accessible. I can download the model locally and experiment with different coding tasks. The community support and documentation are excellent.
Lisa Thompson, Open Source Contributor
Lisa Thompson
Open Source Contributor
Kat Dev's multilingual support is impressive. It handles Python, JavaScript, and C++ with equal proficiency. The model's understanding of different programming paradigms is remarkable.
Alex Kumar, Machine Learning Engineer
Alex Kumar
Machine Learning Engineer
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Frequently Asked Questions About Kat Dev
Have another question? Contact us on GitHub or through StreamLake support.
Can't find what you're looking for? Check our documentation or join our GitHub community
Start building with Kat Dev today
Join thousands of developers already using Kat Dev for AI-powered software development.