Deceptive Patterns
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Dark Patterns in AI Chatbots: A Taxonomy to Inform Better Design

Author
Center for Democracy & Technology
Date
29 May 2026
Publisher
Center for Democracy & Technology
Focus
AI & Automation, Ethics & Responsibility, Law & Policy
Category
Consumer Group or NGO

CDT policy work categorises deceptive patterns in AI chatbots and proposes governance responses.

In this report, we examine AI chatbots through the lens of dark patterns — deceptive or manipulative design choices that may undermine user autonomy or well-being. Drawing on prior work in human-computer interaction and deceptive design disciplines, we investigate how established dark patterns documented in other digital technology contexts may translate to AI chatbots –– particularly those positioned for social, emotional, or relational use.

Using a deductive, multi-stage literature review methodology, we aim to build the conceptual foundation for dark patterns in AI chatbots by identifying which dark patterns are possible, applicable, and relevant in the chatbot context. Our research synthesized hundreds of existing dark patterns, filtered them for relevance, and analyzed them. The result is a comprehensive taxonomy of 37 dark patterns applicable to AI chatbots, referring to both general-purpose systems (e.g., ChatGPT, Gemini, Claude) and “companion” platforms (e.g., Replika, Character.AI).