Articles

Narrative-style technical writing on data, machine learning, LLMs, and applied AI. Small stories for big systems.

How I Slowly Understood What’s Really Happening Inside LLMs like ChatGPT

2026 6 min read

How I Slowly Understood What’s Really Happening Inside LLMs like ChatGPT

A personal journey into tokenization, probability, and next-token prediction.

I wrote this as a learning trail through LLMs, starting from the first question that bothered me: how does a model even see text? The article walks through tokenization, Byte Pair Encoding, next-token probabilities, inference, and how a base model behaves like a compressed memory of internet text.

LLMsTokenizationInference
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Bedtime Story: How Text Became Magic

2026 6 min read

Bedtime Story: How Text Became Magic

A story-style introduction to how neural networks read text.

I used a bedtime-story format to explain why neural networks cannot directly read words and why text must become numbers first. The article introduces tokens, vocabularies, encoding, and the strange little bridge between human language and machine-readable input.

TokenizationNeural NetworksStorytelling
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Chapter 6: When Words Became Pieces

2026 7 min read

Chapter 6: When Words Became Pieces

The story of Byte Pair Encoding.

This article explains Byte Pair Encoding through a story where characters, fragments, and frequent pairs slowly become a vocabulary. I wanted to show how BPE helps models handle unfamiliar words by breaking language into reusable pieces instead of memorizing every possible word.

BPETokenizationNLP
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The Space Between Words

2026 8 min read

The Space Between Words

How embeddings and position help models understand context.

I built this article around a simple misunderstanding between Arjun and Meera: “I need space.” From there, I explain input-target pairs, token embeddings, positional embeddings, and why the same word can mean different things depending on where it stands and what surrounds it.

EmbeddingsContextTransformers
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The Night Before Attention Was Born

2026 10 min read

The Night Before Attention Was Born

A bedtime story about how machines learned to remember.

I used a story between a father and a little girl to explain why attention became such an important idea in AI. The article starts with old encoder-decoder models, memory, vectors, and the problem that eventually made attention feel less like a feature and more like a rescue mission.

AttentionTransformersStorytelling
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© 2026 Sreekaran Reddy. Built to showcase data, machine learning, and applied AI work.