Show HN: HN Companion – web app that enhances the experience of reading HN (hncompanion.com)

A new browser extension, "HN Companion," has been launched to enhance the Hacker News reading experience by using context-aware AI to generate summaries of discussions. This tool allows users to quickly grasp the essence of lengthy threads by highlighting key debates and contrasting viewpoints, enabling them to jump directly to relevant comments and navigate conversations effortlessly with keyboard shortcuts. By understanding thread hierarchy, HN Companion streamlines the way users interact with the content, surfacing what the community values most in discussions. For the AI/ML community, this development is significant as it showcases the practical application of AI in improving user engagement and comprehension in online discourse. Users can customize their experience by choosing from different AI models and fine-tuning prompts, or leverage free cached summaries. The emphasis on keyboard-first navigation, inspired by Vim shortcuts, further enhances usability, making it an appealing tool for avid Hacker News readers who seek to stay informed and participate actively in discussions.