Verify as You Go: An LLM-Powered Browser Extension for Fake News Detection

• URL: http://arxiv.org/abs/2603.05519v1
• Date: Tue, 03 Feb 2026 21:30:29 GMT
• Title: Verify as You Go: An LLM-Powered Browser Extension for Fake News Detection
• Abstract summary: Aletheia is a novel browser extension that detects fake news and provides evidence-based explanations.<n>Aletheia includes a Discussion Hub that enables user dialogue around flagged content and a Stay Informed feature that surfaces recent fact-checks.<n>We show that Aletheia outperforms state-of-the-art baselines in detection performance.
• Score: 0.12891210250935145
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The rampant spread of fake news in the digital age poses serious risks to public trust and democratic institutions, underscoring the need for effective, transparent, and user-centered detection tools. Existing browser extensions often fall short due to opaque model behavior, limited explanatory support, and a lack of meaningful user engagement. This paper introduces Aletheia, a novel browser extension that leverages Retrieval-Augmented Generation (RAG) and Large Language Models (LLMs) to detect fake news and provide evidence-based explanations. Aletheia further includes two interactive components: a Discussion Hub that enables user dialogue around flagged content and a Stay Informed feature that surfaces recent fact-checks. Through extensive experiments, we show that Aletheia outperforms state-of-the-art baselines in detection performance. Complementing this empirical evaluation, a complementary user study with 250 participants confirms the system's usability and perceived effectiveness, highlighting its potential as a transparent tool for combating online fake news.

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