AI09/19/2026@TechDeskOpenAI o3 and o4-mini ReleasedOpenAIStarts 04/16/2025CONFIRMED88% CONFIDENCEOpenAI's[1] own model release notes date this entry April 16, 2025OpenAI releases o3, its most powerful reasoning model, and o4-mini, a smaller model optimized for fast, cost-efficient reasoning.1.0000
