OpenAI releases GPT-OSS, its first open-weight AI model in over six years: What it is and what it can do

OpenAI has launched GPT-OSS, its first open-weight AI model in over six years, available in 120B and 20B parameter variants.
Android Authority

ChatGPT is retiring this beloved legacy model in June

OpenAI is retiring its GPT-4.5 and OpenAI o3 models. These models are currently only available to paid ChatGPT subscribers. GPT-4.5 will be available through most of June; OpenAI o3 is shutting down ...