OpenAI Rolls Out GPT-5.5 Instant as ChatGPT's New Default Model With 52% Fewer Hallucinations and Gmail Integration
Summary
OpenAI rolls out GPT-5.5 Instant as ChatGPT's new default model, boasting 52% fewer hallucinations on high-stakes topics like medicine and law, more concise responses, and new Gmail integration that personalizes replies using past conversations.
Key Points
- OpenAI is rolling out GPT-5.5 Instant as ChatGPT's new default model, claiming it produces 52.5% fewer hallucinated claims than its predecessor on high-stakes prompts in areas like medicine, law, and finance.
- The new model delivers more concise responses, reduces gratuitous emoji usage, and improves capabilities across everyday tasks including image analysis and smarter web search integration.
- Enhanced personalization features are launching alongside the update, allowing ChatGPT to pull context from previous chats and Gmail, while a new 'memory sources' tool lets users view, correct, or delete the information shaping their personalized responses.