OpenAI announced ' GPT-5.3-Codex ' on February 5, 2026. GPT-5.3-Codex is a model that combines the coding capabilities of GPT-5.2-Codex and the inference capabilities of GPT-5.2, achieving improved ...
ChatGPT launched publicly on 30 November 2022 as a “research preview.” It was powered by GPT-3.5, marking the first time a powerful generative-pretrained transformer model was widely available in a ...