AlphaCodium is a test-based, multi-stage, code-centric iterative flow method aimed at enhancing the performance of LLMs on code-related problems. It optimizes model performance in code generation tasks, particularly for competitive programming. Users can select appropriate models (e.g., "gpt-4", "gpt-3.5-turbo-16k") based on their configuration and leverage AlphaCodium to tackle specific problems or entire datasets. The tool also provides a set of best practices, including YAML structured output, semantic reasoning, and modular code generation, which are applicable to various code generation tasks.