GPT 4.5 is available to the ChatGPT Pro subscribers and developers on all paid tiers. Plus, and Team users will have access next week, followed by Education and Enterprise access.

GPT-4.5 could arrive as soon as next week, as Microsoft gets ready to host OpenAI’s latest models.

Sam Altman’s OpenAI released GPT-4.5, an upgraded version of the artificial intelligence model that powers ChatGPT, to select users on Thursday.

OpenAI has launched GPT-4.5 as a research preview worldwide. The company claims that this model is more capable of recognizing patterns, making connections, and generating creative insights than previous AI models.

OpenAI is launching GPT-4.5 today, its newest and largest AI language model. GPT-4.5 will be available as a research preview for ChatGPT Pro users to start. OpenAI is calling the release its “most knowledgeable model yet,” but initially warned that GPT-4.5 is not a frontier model and might not perform as well as o1 or o3-mini.

OpenAI launched GPT-4.5, its newest and largest model, yet the company admits it might not perform as well as the o1 or o3-mini models. GPT-4.5 has enhanced writing capabilities, world knowledge, and what the AI company calls a “refined personality over previous models.