GPT-5.5 launched on April 23, 2026, and two weeks of Reddit reception split along three fault lines that no aggregator roundup captured cleanly. A leaked Codex system prompt forbidding “goblins, gremlins, raccoons, trolls, ogres, pigeons” went viral on r/ChatGPT (856 votes) and r/OpenAI (1.2K votes) before OpenAI’s own post-mortem dropped. Doubled output pricing at $30 per million tokens drew the loudest dissent on r/OpenAI’s launch thread , and a measurable 5.4 holdout faction emerged around hallucination regressions on factual recall workflows. This post is a Reddit-only community-reception snapshot bounded to the first 14 days.