Build a Large Language Model From Scratch: The Complete Roadmap

📰 Medium · ChatGPT

Learn to build a large language model from scratch by implementing every component yourself, from tokenization to LoRA, and understand how modern LLMs work

advanced Published 6 Jul 2026
Action Steps
  1. Implement tokenization to preprocess text data
  2. Build an embedding layer to represent words as vectors
  3. Configure a transformer architecture to handle sequential data
  4. Train a model using a large dataset and optimize hyperparameters
  5. Apply LoRA to fine-tune the model and improve performance
Who Needs to Know This

AI engineers and researchers can benefit from this roadmap to build and customize their own LLMs, while data scientists and ML engineers can gain a deeper understanding of the underlying components

Key Insight

💡 Building a large language model from scratch requires a deep understanding of the underlying components, from tokenization to LoRA

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🤖 Build a large language model from scratch and learn how modern LLMs like GPT work! #LLM #AI #ML

Key Takeaways

Learn to build a large language model from scratch by implementing every component yourself, from tokenization to LoRA, and understand how modern LLMs work

Full Article

From tokenization to LoRA — learn how modern LLMs like GPT, Llama, DeepSeek, and Qwen work by implementing every component yourself. Continue reading on Medium »
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