OpenAI is capping off the week with a research preview of GPT-4.5. The company is touting the new system as its largest and best model for chat yet. In early testing, OpenAI says people found GPT ...

is spearheading the development of the open model, which is in the very early stages, sources familiar with the situation told TechCrunch. OpenAI’s GPT-4.1 may be less aligned than earlier ...