OpenAI

OpenAI has released GPT-5, its most advanced language model to date. It is built as a unified system that can switch between fast responses and deeper reasoning depending on the complexity of the user's prompt. GPT-5 offers improved accuracy, better reasoning, and more useful responses across a wide range of topics including coding, health, and creative writing.

OpenAI has released gpt-oss series, a new line of open-weight models built for strong reasoning, agentic tasks, and flexible developer use.

ChatGPT Agent has been introduced by OpenAI. It is a tool that can think and take action by proactively selecting from a set of agentic tools to carry out tasks on your behalf using its own virtual computer. This feature is available to ChatGPT Pro, Plus and Team users.