Comparative Study of AI Code Generation Tools: Quality Assessment and Performance Analysis

Artificial intelligence (AI) code generation tools are crucial in software development, processing natural language to improve programming efficiency. Their increasing integration in various industries highlights their potential to transform the way programmers approach and execute software projects. The present research was conducted with the purpose of determining the accuracy and quality of code generated by artificial intelligence (AI) tools. The study began with a systematic mapping of the literature to identify applicable AI tools. Databases such as ACM, Engineering Source, Academic Search Ultimate, IEEE Xplore and Scopus were consulted, from which 621 papers were initially extracted. After applying inclusion criteria, such as English-language papers in computing areas published between 2020 and 2024, 113 resources were selected. A further screening process reduced this number to 44 papers, which identified 11 AI tools for code generation. The method used was a comparative study in which ten programming exercises of varying levels of difficulty were designed and the results obtained from 4 of them are presented. The identified tools generated code for these exercises in different programming languages. The quality of the generated code was evaluated using the SonarQube static analyzer, considering aspects such as safety, reliability and maintainability. The results showed significant variations in code quality among the AI tools. Bing as a code generation tool showed slightly superior performance compared to others, although none stood out as a noticeably superior AI. In conclusion, the research evidenced that, although AI tools for code generation are promising, they still require a pilot to reach their full potential, giving evidence that there is still a long way to go.