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.

For the first time in more than five years, OpenAI is launching a new open language model that appears to be state-of-the-art.

It’s the first such models it’s launched in over five years, as pressure in the US grows to respond to China’s dominance in open models.