Tuesday, 5 May, 2026
OpenAI Debuts GPT-5.5 Instant as the New Default ChatGPT Model
By Isha
OpenAI has officially launched GPT-5.5 Instant, replacing GPT-5.3 as the default model for all ChatGPT users. This update significantly enhances factual reliability, boasting 52.5% fewer hallucinations in high-stakes fields like medicine and law. Featuring improved personalization through new "Memory Sources," GPT-5.5 Instant offers a more natural, concise conversational tone. It delivers superior performance in math, science, and visual reasoning.
Read full story at Techcrunch