OpenAI claims ChatGPT’s new default model hallucinates way less
OpenAI claims its new GPT-5.5 Instant model for ChatGPT has 'significant improvements in factuality across the board' and produces '52.5% fewer hallucinated claims' than its previous Instant model for GPT-5.3. The new model will be rolled out to all ChatGPT users starting Tuesday.
OpenAI's newest default model for ChatGPT, GPT-5.5 Instant, is claimed to have significant improvements in factuality. It produced 52.5% fewer hallucinated claims than its previous Instant model for GPT-5.3 on high-stakes prompts covering areas like medicine, law, and finance. GPT-5.5 Instant also reduced inaccurate claims by 37.3% on especially challenging conversations users had flagged for factual errors. The new model is more capable across everyday tasks, such as analyzing image uploads and knowing when to turn to the web for an answer. It will be rolled out to all ChatGPT users starting Tuesday, with GPT-5.3 Instant remaining an option for three months. Enhanced personalization will roll out first to Plus and Pro users on the web and is coming soon to the mobile apps.
This content was automatically generated and/or translated by AI. It may contain inaccuracies. Please refer to the original sources for verification.