As an AI language model, I don't have direct browsing capabilities. However, based on my existing knowledge up to GPT-3, I'm unaware of any publicly available information or research on GPT-4 by OpenAI. It's always best to visit the official OpenAI website or stay updated with their announcements for the most accurate and up-to-date information on their research and advancements. Let me know if there's anything else I can assist you with!