Qwen2.5-Coder-14B is a large language model in the Qwen series focused on code, encompassing various model sizes ranging from 0.5 to 32 billion parameters to meet diverse developer needs. The model shows significant improvements in code generation, reasoning, and repair, built upon the powerful Qwen2.5, with a training token expansion to 5.5 trillion, including source code, grounded text code, and synthetic data. Qwen2.5-Coder-32B has become the leading open-source code LLM, matching the coding capacity of GPT-4o. Additionally, it provides a comprehensive foundation for real-world applications such as code agents, enhancing coding abilities while maintaining advantages in mathematics and general tasks. It supports long contexts of up to 128K tokens.