OpenAI's GPT-5.5 Instant delivers smarter answers with fewer hallucinations
ChatGPT's new default model reduces errors and personalizes responses better than ever.
Deep Dive
GPT-5.5 Instant updates ChatGPT’s default model with smarter, more accurate answers, reduced hallucinations, and improved personalization controls.
Key Points
- GPT-5.5 Instant becomes the default model for all ChatGPT users, replacing GPT-5.
- Reduces hallucination rates significantly, improving factual accuracy in responses.
- Adds granular personalization controls for tone, detail level, and domain focus.
Why It Matters
A more reliable and personalized ChatGPT improves trust and utility for professionals relying on AI.