In a major shift, the company is “open sourcing” two A.I. systems, freely sharing the technology with outside researchers and businesses.

OpenAI says it has tweaked ChatGPT to ensure the model responds appropriately when a user shows distress.

OpenAI says ChatGPT isn’t designed to keep you chatting anymore — it’s now focused on helping you finish tasks faster and use it only when needed.

Despite the company's name, OpenAI hasn't dropped an open version of its AI models since GPT-2 in 2019. That changed on Tuesday, as CEO Sam Altman shared two new open-weights, reasoning AI models, named gpt-oss-120b (120 billion parameters) and gpt-oss-20b (20 billion parameters).

OpenAI is releasing a pair of open and freely available artificial intelligence models that can mimic the human process of reasoning, months after China’s DeepSeek gained global attention with its own open AI software.