Fitten Code
Feishu Technology has launched an AI programming assistant that provides code completion, intelligent Q&A, unit test generation, code optimization and comment generation. The official stated that it supports more than a dozen mainstream IDEs and programming languages.
Updated: 2026-10-26
What is Fitten Code?
Fitten Code is an AI programming assistant launched by Beijing Fitteen Technology Co., Ltd. The title on its official website homepage is "AI Programming Accelerator", and its positioning is "Fast, Accurate, Safe and Efficient". Officially, it is introduced that its underlying model runs on the Jittor deep learning framework, is created by a Tsinghua doctoral team, and covers all stages of programming such as code completion, code recommendation, and unit test generation.
Who is it for?
- Backend and frontend engineers who write Python, C++, JavaScript, and Java on a daily basis.
- Maintenance developers who need to add unit tests and comments to historical projects.
- Programmers working in environments such as VS Code, the JetBrains series, Visual Studio, and Vim.
- Enterprise R&D teams that require code to stay within the country and need a private deployment solution.
- Students learning programming who need explanations of code and debugging of error reports.
Key features
7Code Autocompletion
Intelligently predicts and completes content based on the current code context. The official claims that over 50% of the autocompleted characters are accepted on average every day.
Intelligent Q&A
You can directly ask questions or put forward requirements, and get answers or directly generate the code you need.
Unit Test Generation
Automatically generates test cases for the selected code and supports various unit testing frameworks.
Code Optimization
Automatically detect potential issues and optimize the structure to enhance readability and maintainability.
Generate Comments
Analyze the code structure and functions to generate clear and concise comments.
Autonomous Programming Agent
Can call tools such as modifying files, executing commands, searching for files, and reading files to iteratively break down and execute complex tasks.
Internet Search
It can search the Internet for information helpful in answering questions and generate responses based on the retrieved content.
How to use Fitten Code
- The official website offers two options: IDE plugins and online experience.
- It is recommended to install the plugin in the IDE first, as the code completion function is only meaningful in a real context.
- Go through the results of code optimization and comment generation one by one.
- The AI may alter the naming or structure, which could affect the code review.
- Don't just look at the pass rate for automatically generated unit tests.
- make sure the assertions truly cover the boundary conditions.
- For enterprise users who have requirements for code compliance, the official website mentions that there are private deployment solutions and online customer service available, and you can consult them first.
- The specific figures regarding response speed, accuracy, and efficiency improvement on the official website are labeled as laboratory or developer statistics and are subject to adjustment.
- Please refer to the latest official website instructions for reference.
- The official website showcases an autonomous programming agent that can call tools such as modifying files and executing commands.
- It is recommended to try it out in an independent branch or a temporary directory first.
- The official website lists more than ten supported editors.
- Unifying the IDE within the team before promotion can reduce problems caused by environmental differences.
Traffic & popularity
Data month Sep 2026
Fitten Code receives about 10.0K visits per month.
Monthly visits
12 monthsTraffic sources
- Search57.8%
- Referrals20.3%
- Direct18.5%
- AI assistants3.3%
- Social0.1%
Top countries
- China92.4%
- United States5.2%
- Hong Kong, China1.5%
- Taiwan, China0.7%
- Japan0.1%
Estimated from third-party traffic data.
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