*🚨💻 Tech Today | OpenAI has officially launched a research preview of its latest AI model, GPT-4.5, for ChatGPT Pro users and developers worldwide, with plans to expand access in the coming weeks.* ➡️ CEO Sam Altman described GPT-4.5 as “a giant, expensive model,” noting that the company faced GPU shortages, limiting its ability to launch the model simultaneously across all user tiers. Read more 👉 https://tinyurl.com/43933ykk _React with an emoji to this update_