GPT-5.5 Review 2026: OpenAI’s Most Agentic Model Yet Changes the Coding Game
# GPT-5.5 Review 2026: OpenAI’s Most Agentic Model Yet Changes the Coding Game ## Introduction OpenAI dropped GPT-5.5 on April 23, 2026, and it’s not just another incremental update. This is the first fully retrained base model since GPT-4.5—meaning the architecture, pretraining corpus, and objectives have all been reworked from scratch. If that sounds like … Read more