GPT-5.2 System Card [pdf] Posted by synthwave on Thursday December 11, 2025 @01:15PM from the cdn.openai.com dept. https://cdn.openai.com/pdf/3a4153c8-c748-4b71-8e31-aecbde944f8d/oai_5_2_system-card.pdf ( 1 comment | 6 points | on HN )