Courses
Multi-day, guided programs to get real results
Lightning Lessons
Free, interactive sessions to explore new topics
Lightning Lesson1 hour


Cross-encoders: An End-to-end Guide
WATCH
Watch now Lightning Lesson1 hour



Search Trends in 2026 - by the numbers
WATCH
Watch now Lightning Lesson1 hour



A Bag-of-Documents Model for Query Understanding & Retrieval
WATCH
Watch now Lightning Lesson1.5 hours


AI Search Fundamentals: Vector Spaces, Matching, & Ranking
WATCH
Watch now Lightning Lesson1.5 hours


Modern AI Search Techniques You Should Know
WATCH
Watch now Lightning Lesson1 hour



Are we all doing "retrieval" wrong?... a candid discussion
WATCH
Watch now Alumni reviews
Clear, practical, and well-structured course that makes a complex topic approachable. AI-Powered Search: Modern Retrieval for Humans & Agents offers useful real-world context and actionable insights for anyone looking to better understand modern search in the age of AI.
Jason
March-2026
Staff Software Engineer · Relativity
Solid overview of search approaches, from traditional methods to newer innovations. The concepts were well-explained and easy to follow. The external speakers were particularly valuable, bringing different perspectives and practical insights to the discussion.
Filipa
March-2026
Data Scientist · OLX
Tray and Doug shared many keen insights in AI Search. I great class for anyone looking to advance their understanding of Search principles in a meaningful way.
Douglas
March-2026
CTO · Weblink Technologies
The course covers a lot of ground in 5 weeks, and I learned a lot. The weekly office hours provided a wonderful opportunity to pick the brains of Trey and Doug on specific topics relevant to the problems I was tackling at my workplace. And to top it all, the instructors are super-nice people. Highly recommend the course.
Kishore
March-2026
ML Engineer · Startup
The definitive way to stay current with modern retrieval. Period.
I've taken both iterations of this course, and it remains the single best investment I've made in my professional development as a search engineer. The landscape of AI-powered search and RAG is shifting so fast that staying ahead of the curve usually means piecing together scattered blog posts and pre-print papers. Trey and Doug have done the hard work of curation, weaving together the essential mental models and the latest techniques into a coherent, actionable framework.
The only place where saying "We need to talk about your late interaction" is a compliment.
Verdict: 10/10 would compute cosine similarity with this group again.
Julian
March-2026
Generative AI Engineer · Arboria

