> Markdown version of [/@tessel-haagen](https://www.wearedevelopers.com/@tessel-haagen). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Tessel Haagen Data and AI consultant focused on building interpretable, safe, and transparent LLMs. ## About Tessel Haagen builds and evaluates intelligent systems as a data and AI consultant at Info Support. She focuses on interpretable AI, combining her background in computer science and linguistics to figure out how models reason and make decisions. Much of her work examines how to trust large language models. She breaks down the black box of generative AI, figuring out how to explain LLM behavior and agentic workflows to make them more predictable and safe. When she is not working on model transparency, you can find her diving into complex strategy board games or reading fantasy novels. ## Past Sessions ### World Congress 2026 Europe · July 8, 2026 Berlin, Germany - [From Hallucination to Justification: Hands-On Explainability for LLMs](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1239-from-hallucination) · 120 min