creators

AI Coffee Break - Letitia Parcalabescu explains AI

Letitia Parcalabescu, AI researcher at Aleph Alpha Research, explains recent AI papers in short animated videos to 64.9K subscribers on AI Coffee Break.

Letitia Parcalabescu makes AI Coffee Break with Letitia, a YouTube channel of about 64,900 subscribers and 143 videos that explains recent technical work in AI in short, animated episodes, usually alongside a character called Ms. Coffee Bean. Subjects run from large language models to tokenization and interpretability. She holds bachelor's degrees in physics and applied computer science and a master's in physics, all from Heidelberg, and completed a PhD at Heidelberg's Institute for Computational Linguistics in July 2024, summa cum laude, on measuring the contributions of the vision and text modalities in multimodal transformers. Since October 2024 she has been an AI researcher at Aleph Alpha Research, working on interpretable reasoning models and on data for large-scale pretraining, and she is an industrial fellow of the Zuse School ELIZA. She is the last author of AtManRL, an April 2026 paper on training models whose reasoning traces genuinely drive their answers. She writes a companion Substack and is based in Germany.

Specialization

AI research explainers, multimodal models, interpretability, computational linguistics

Country

Germany