Meta
University of Cambridge
UCL
Ahmet ÜstünCode Agents Lead · CohereResearcher↗
Researcher
Patrick Lewis
CohereSenior Director of Agentic AI
Lewis led the 2020 paper that introduced retrieval-augmented generation, or RAG. The method lets language models retrieve external sources before answering, helping them work with current evidence and making their responses easier to verify.
Career & education
Current roleCohere2025-presentSenior Director of Agentic AI
Cohere2025-presentPreviously
Education
Work and education history is primarily focused on AI-relevant roles and may not be comprehensive.
Citation Trend
Total citations to scholarly work, including research papers, technical reports, books and theses, as recorded by Google Scholar. Each point is a dated snapshot.
citations55,537As of Oct 20, '26
citations+13,217Since last snapshot, Jun 15, '26
Selected contributions
Retrieval-Augmented Generation for Knowledge-Intensive NLP Tasks
With Ethan Perez, Aleksandra Piktus, Fabio Petroni, Vladimir Karpukhin, Naman Goyal, Heinrich Küttler, Mike Lewis and others ·RAG finds relevant documents to help a language model generate better-informed answers.
Based on public sources. If accuracy is important, verify details using the links or references.
For corrections, updates, or requests to remove information, contact us.
Reviewed August 8, 2026 · Checked for accuracy and new information.
