Voice Generator (https://voice-generator.com/) transforms texts into voices from written or pasted text, pdf or epub.

12 languages and 70 voices available (only 1 in French).

In the text-to-speech section, there is an option to generate an audio file per line of text with individual or zip export.

Export mp3.
Model used not specified, the source code of the page indicates two open-source models Kokoro TTS and Piper TTS.

Free, without an account and unlimited.

Sources for the tests: Verlaine’s “Art poétique” and quiz from part 1 of the AI and Education Réseau Canopé file.