CTO and co-founder @ Towards AI - creator of What's AI - ex-PhD @ Mila - author of Building LLMs for Production
Hi, I am Louis.
I build, teach, and explain practical AI engineering: LLM products, RAG, agents, evaluation, deployment, and the unglamorous reliability work that turns demos into systems people can actually use.
I am the CTO and co-founder of Towards AI, where we create AI engineering courses, run corporate training, and help teams ship useful AI products. Before going full-time on Towards AI, I was doing a PhD at Mila and Polytechnique Montreal.
I also create What's AI, a YouTube channel I have been building since 2020, write the newsletter, and co-authored the bestselling Building LLMs for Production. I speak about AI engineering at conferences and events including AIE and UpHill.
My bias is simple: start with the simplest system that can work, add agents only when autonomy is actually useful, and evaluate before real users do it for you.
Watch my most recent video: Open vs. closed models. Once more and for all 😤
| Where | What I do there | Best next step |
|---|---|---|
| What's AI | My education home: YouTube videos and newsletter essays on LLMs, RAG, agents, evals, and production AI. I also co-authored Building LLMs for Production and plan to keep turning what I learn into deeper resources. | Watch YouTube / Subscribe / Get the book |
| Towards AI | Enterprise enablement, consulting, and hands-on training for professionals and teams becoming AI-first. | Explore enterprise enablement |
| Towards AI Academy | Structured courses and training for developers who want to become AI engineers and build production AI systems. | Join the academy |
- Production-grade AI engineering over fragile demos.
- Clear decision frameworks for LLMs, RAG, agents, workflows, and fine-tuning.
- Evals, observability, structured outputs, and cost-aware system design.
- Making AI accessible without making it shallow.
Watch What's AI on YouTube | Learn AI Engineering | Work with Towards AI