OpenAI’s Biggest Model Yet—But Is It the Last?
GPT-4.5 is OpenAI’s largest model so far, built using the same multimodal tech as GPT-4o. It’s powerful, but OpenAI says it’s not a frontier model—without really explaining why. One big upgrade: way fewer hallucinations than older versions. The catch? This might be OpenAI’s last major pre-trained model, signaling a shift in how AI evolves. Big moment for AI development.