After several leaks, Google has finally debuted its latest Gemini 3 family of large language models. The flagship model, Gemini 3 Pro, replaces the 2.5 Pro model that was first unveiled in March 2025.
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 ...