---
title: "Blog - Claude Code and AI in practice | Tomasz Guściora"
description: "Writing about Claude Code, agents, and shipping AI - no hype, just specifics."
url: https://demystifai.xyz/en/blog/
lang: en
---

# Blog

I write about Claude Code and shipping AI the way I'd want to read about it - no hype, just specifics.

-   2026-07-02 · 3 min read

    ## Build a BPE tokenizer - in your browser, from scratch

    Byte Pair Encoding explained by building it: train a GPT-style tokenizer on Polish poetry and run it on the Constitution - live, in your browser, no install.

    <https://demystifai.xyz/en/blog/build-a-bpe-tokenizer/>

-   2026-05-11 · 10 min read

    ## Claude Code: five paths to learn it, one call to make - yours

    Most offers aimed at software houses and founders crash into one question - why pay when YouTube is free? Here's the honest answer.

    <https://demystifai.xyz/en/blog/4-paths-learning-claude-code/>

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