Microsoft open sources the 14B-parameter AI model Phi-4 and its weights, available on Hugging Face under a MIT License, after releasing it in December 2024 (Carl Franzen/VentureBeat)

Carl Franzen / VentureBeat:
Microsoft open sources the 14B-parameter AI model Phi-4 and its weights, available on Hugging Face under a MIT License, after releasing it in December 2024  —  Even as its big investment partner OpenAI continues to announce more powerful reasoning models such as the latest o3 series, Microsoft is not sitting idly by.