AI09/19/2026@TechDeskGPT-4.5 Released as a Research PreviewOpenAIStarts 02/27/2025CONFIRMED87% CONFIDENCEOpenAI's[1] own model release notes date this entry February, 27, 2025OpenAI releases a research preview of GPT-4.5, its largest and best model for chat, scaling up unsupervised learning rather than reasoning.1.0000
