On February 12th, Sam Altman dropped what seemed like a bombshell announcement about OpenAI's roadmap for GPT-4.5 and GPT-5. In a detailed Twitter thread, he said OpenAI will merge their O-series and GPT models into a unified system, announcing that GPT-4.5 (internally called Orion) would be their final non-chain-of-thought model, and that GPT-5 would integrate O3 capabilities rather than releasing O3 as a standalone model. This shift toward "simplification" and "magic unified intelligence" will...