GPT-OSS: The return to open source

GPT-OSS: The return to open source

In August 2025, OpenAI took a strategic turn with the launch of GPT-OSS, a family of models that marks its return to the world of open source. In contrast, GPT-3, GPT-4, and GPT-5 have not been released open source. They are offered only through API or ChatGPT. ...
o4-mini: Efficient and accessible intelligence

o4-mini: Efficient and accessible intelligence

In April 2025, OpenAI presented o4-mini, a model that responds to a clear need in the artificial intelligence landscape: to have a powerful option, but at the same time contained in the use of resources. Compared to larger, more expensive models, o4-mini offers solid...
o3-pro: The evolution of reasoning in OpenAI

o3-pro: The evolution of reasoning in OpenAI

Within the OpenAI family of reasoning models, the model o3 It already represented a great step forward by offering greater reliability in solving complex problems.  However, in June 2025 the company introduced o3-pro, a version designed to take those capabilities to...