Top 10 Hacker News — Top Stories — April 28, 2026

On April 28, 2026, Hacker News erupted over a seismic shift in AI politics: Microsoft and OpenAI terminated their exclusive, revenue-sharing deal. With 857 upvotes and 729 comments, the story dominated, signaling the end of a cozy duopoly that reshaped the industry. But the tech community didn't stop at corporate drama. A philosophical post asking "Is my blue your blue?" racked up 492 votes, sparking a fierce debate on perceptual relativity and color naming. Meanwhile, a retro-futurist project resurrected a 13-billion parameter language model trained on 1930s text, earning 311 upvotes. These three entries capture HN's split personality: obsessed with power structures, yet endlessly fascinated by foundational questions of human cognition and historical oddities. This list, sourced from Hacker News's daily top-voted stories, reflects what a deeply technical, opinionated audience found urgent on that specific Monday.