SuanNi

May 7, 2026 · Artificial Intelligence

GPT-5.5 Instant Cuts Hallucinations by 52.5% and Delivers More Concise Answers

OpenAI's free GPT-5.5 Instant replaces GPT-5.3 as the default model, slashing hallucinations by 52.5% in high‑risk domains, improving factual accuracy, providing shorter yet precise responses, adding memory‑controlled personalization, and rolling out to all ChatGPT users via the chat‑latest API.