04 min AI How-to ChatGPT’s Model Retirements Are Now a User Deadline Calendar OpenAI has removed GPT-5.2 from ChatGPT and set retirement dates for GPT-4.5 and o3. Here is what changes for ChatGPT users, what stays available through the API, and what paid users and workspace admins should check before the next deadlines. AkshayJune 15, 2026 Read More