The Complete Guide to OpenAI Models in 2026: From GPT-5.2 to Open-Source
The OpenAI models ecosystem in 2026 looks very different from the early days of general-purpose chatbots. What began as experimental large language models has evolved into a full-scale AI platform built for professional work, enterprise automation, and agent-driven systems. Users are no longer asking which model is “smartest,” but which model delivers the right level…