Qwen2.5-14B is a dense 14.7B parameter causal language model from the Qwen2.5 series, released as part of a family of base and instruction-tuned models ranging from 0.5B to 72B parameters. It delivers significant improvements over Qwen2, including stronger performance in coding and mathematics through specialized expert models, better instruction following, enhanced handling of structured data and outputs such as JSON, and more robust adaptability to diverse system prompts for role-play and chatbot settings. The model natively offers multilingual support across 29+ languages, including Chinese, English, French, Spanish, Portuguese, German, Japanese, Korean, and Arabic. Qwen2.5-14B was trained with both pre-training and post-training for versatile instruction-tuned applications.