OpenAI said during a livestream on 7 Aug 2025 that it will retire all earlier versions of its large-language models as it rolls out GPT-5, marking the company’s biggest overhaul of its commercial lineup since the original GPT series debuted in 2018. A presenter on the broadcast stated, “With GPT-5 we’re actually deprecating all our previous models,” signaling that clients will be moved to the newest system for future development and deployment. OpenAI did not immediately disclose a migration schedule or pricing, but the decision is set to streamline its product suite and concentrate computing resources on the latest model.