Trivia Pixel (https://www.triviapixel.com/) generates quizzes based on a given theme, to be completed solo or in competition mode.

Editable question with possible additions.
Three levels of difficulty, up to 20 questions.
French supported.

The number of participants and the LLM used are not mentioned.

Usable without an account for the single-player mode, the account allows saving and competition.

A gallery (in English) provides access to quizzes that have already been generated.

Free and seems unlimited.