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tech 24 August 2026

If I Were 17, I'd Learn How to Build LLMs from Scratch

In an ever-evolving world, learning to build large language models (LLMs) might be the key to your future. Discover why and how to get started.

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I were 17, I'd learn how to build LLMs from scratch ↗ twitter.com

Why Are LLMs Crucial Today?

Large language models (LLMs) like GPT-3 and its successors have revolutionized how we process natural language. These models can generate text, answer complex questions, and even create creative content. According to a MarketsandMarkets study, the AI in Natural Language Processing market is expected to reach $35.1 billion by 2026, with a compound annual growth rate (CAGR) of 21.6%.

Starting with the Basics: Learn the Fundamentals

To build an LLM from scratch, mastering some fundamental concepts is essential. Here's where to start:

  1. Mathematics and Statistics: Understanding machine learning algorithms requires a solid foundation in linear algebra, calculus, and statistics.
  2. Programming: Python is the go-to language for AI due to its robust libraries like TensorFlow and PyTorch.
  3. Neural Network Architecture: Understanding how neural networks function is crucial for creating efficient LLMs.

Building Your Own LLM: Where to Start?

  1. Choosing the Right Framework: TensorFlow or PyTorch? Each framework has its advantages. PyTorch is often preferred for its flexibility and simplicity.
  2. Data and Preprocessing: A powerful LLM requires massive amounts of textual data. Access to datasets like Common Crawl is essential.
  3. Training and Optimization: Training an LLM is computationally expensive. Using GPUs or TPUs can speed up the process.

Training an LLM with Limited Resources

Even with limited resources, it's possible to train an effective LLM. Options include using cloud computing services like AWS or Google Cloud to rent compute time at a lower cost. Techniques like transfer learning can also reduce data and compute requirements.

The Future with LLMs

The demand for more powerful LLMs continues to grow. Companies like OpenAI and Google are investing billions of dollars in research and development of these technologies. For entrepreneurs and developers, mastering LLM construction is not only a valuable skill but also an opportunity to innovate across various sectors, from education to healthcare.

Conclusion

Learning to build LLMs from scratch is an ambitious but highly rewarding endeavor. With the right skills and resources, you can not only understand this cutting-edge technology but also use it to propel your career in AI.

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