GPT-5.5 Instant makes ChatGPT more accurate while nixing ‘gratuitous emojis’

OpenAI has released GPT-5.5 Instant as the new default ChatGPT model, delivering 52.5% fewer hallucinations on high-stakes domains (medicine, law, finance) and 37.3% fewer factual errors on complex conversations—critical improvements for enterprise use cases where accuracy directly impacts business risk and compliance. For IT organizations, this represents a significant reliability upgrade that strengthens the business case for AI integration in regulated industries and customer-facing applications, while reducing the need for extensive output validation workflows. The enhanced accuracy and more professional response style (eliminating unnecessary emojis and verbosity) make ChatGPT a more credible tool for enterprise adoption and internal deployment.