Building a BPE Tokenizer with TDD - Part 3: Implementing Encode and Decode Methods

Final part of our BPE tokenizer series, where we implement encoding and decoding capabilities. We’ll write comprehensive tests for token conversion, handle special tokens, and ensure proper error handling for edge cases.

September 13, 2025

Building a BPE Tokenizer with TDD - Part 2: Implementing the Train Method

Second part of our BPE tokenizer series, focusing on implementing the train method. We’ll cover the core BPE algorithm, write tests for training functionality, and implement vocabulary management and pair merging logic.

September 13, 2025

Building a BPE Tokenizer with TDD - Part 1: Project Setup and First Test

First part of a series on building a Byte Pair Encoding tokenizer using Test-Driven Development. We set up our project structure, create a virtual environment, and write our first test for the tokenizer’s initialization.

September 13, 2025