Qwen2.5-Coder is the latest series of the Qwen large language model, designed for code generation, reasoning, and fixing. Built on the powerful Qwen2.5, this model has been trained on 550 trillion source codes, text code foundations, and synthetic data, elevating its coding capabilities to the forefront of open-source code LLMs. It not only enhances coding abilities but also maintains strengths in mathematics and general capabilities.