I'm an LLM Research Engineer with over a decade of experience in artificial intelligence. My work bridges academia and industry, with roles including senior staff at an AI company and a statistics professor. My expertise lies in LLM research and the development of high-performance AI systems, with a deep focus on practical, code-driven implementations.

Sebastian Raschka's Blog offers insights, tutorials, and research updates on machine learning, deep learning, and artificial intelligence. Covering topics such as neural networks, data science, and Python programming, Sebastian Raschka's Blog provides resources for students, researchers, and practitioners in the field of AI. Developers can learn about  algorithms, research methodologies, and practical applications of machine learning through Raschka's blog posts and publications.

Sebastian Raschka

A comprehensive guide to implementing Qwen3, one of the leading open-source large language models, from scratch using pure PyTorch. The article explores why Qwen3 is popular among developers, including its Apache License v2.0, strong performance rankings, and variety of model sizes from 0.6B to 480B parameters. It provides hands-on code implementation to understand the architecture's inner workings.

Understanding and Implementing Qwen3 From Scratch