Gustave Cortal

I'm a research scientist at Callyope, doing natural language processing for mental health. I'm building a safety benchmark for language models. I also analyze spontaneous speech for psychiatric disorders, summarize clinical documents, and optimize inference for clinical workloads.
During my PhD in natural language processing at ENS Paris-Saclay, I developed language models to analyze subjective experience and connect emotion analysis with cognitive science theories.
My personal projects explore interpretability (thought steering), transformer-based models for niche domains (psychotherapy, dreams, animal motion) and image generation (ganlive), and most run in real time in the browser.
News
- Oct 2026I released four web demos: a tiny transformer of animal motion (animacy), activation steering for reframing (thought steering), a recommender for rare concepts (dérive) and a GAN latent space explorer (ganlive).
- Aug 2026Our paper on interpretable topic modeling of spontaneous speech in depression was published in JMIR Mental Health.
- Jan 2026I defended my PhD, Natural language processing for subjectivity analysis in personal narratives, at ENS Paris-Saclay.
- Nov 2025Our paper Formalizing Style in Personal Narratives was presented at EMNLP.
- Oct 2025I released Piaget and Beck, language models fine-tuned for psychological reasoning, then on psychotherapeutic preferences.