A prominent recent project involved generating using OpenAI's Text-to-Speech (TTS) models.

You can download massive compressed files (like enwik9.zip ) which contain nearly 1 billion bytes of Wikipedia text data. How to Save/Download .txt Files

You can create simple text files using Notepad (Windows) or TextEdit (Mac).

This was shared on Hacker News as a showcase of AI scalability, where the creator used LLMs to parse text and match character voices for a more immersive experience.