OpenAI Upgrades GPT-5.5, Retires Legacy ChatGPT Models

OpenAI is upgrading its GPT-5.5 Instant model and retiring several older models. The company states GPT-5.5 Instant has significantly improved, especially in May 2026. Here's the thing: OpenAI has quietly confirmed that GPT-5.5 will now respond more accurately and use a better style for its answers. They are also reducing long, bullet-heavy responses to make GPT sound more human. These changes mean responses will be easier to read and more natural. OpenAI is also sunsetting older models. For example, o3 will be retired on August 26, and GPT-4.5 will be retired on June 27. What's interesting is OpenAI is integrating a job search tool into ChatGPT. This new feature allows users to find relevant job listings from sources like Indeed and Upwork, and tailor resumes for specific opportunities. The bottom line: These updates aim to make ChatGPT more helpful and user-friendly for everyday tasks and job searching.