Qwen2.5-Coder-3B is a large language model within the Qwen2.5-Coder series, emphasizing code generation, reasoning, and debugging. Built on the robust Qwen2.5 architecture, this model significantly improves code generation, reasoning, and debugging capabilities by increasing training tokens to 5.5 trillion, incorporating source code, textual code fundamentals, synthetic data, and more. The Qwen2.5-Coder-32B has become the most advanced open-source code language model available, matching the encoding capabilities of GPT-4o. Furthermore, Qwen2.5-Coder-3B provides a comprehensive foundation for real-world applications like code assistants, enhancing coding capabilities while maintaining strengths in mathematics and general comprehension.