OpenAI has introduced ChatGPT Pro, a premium subscription plan priced at $200 per month, aimed at professionals and researchers dealing with complex problems in fields like data science, programming, and legal analysis. The new tier promises unlimited access to the most powerful AI models, including advanced voice mode with vision capabilities. However, the high cost has sparked debate about its accessibility and value, with some users questioning whether the benefits justify the price, especially given the chatbot's limitations in certain areas. The introduction of this tier is also seen as a test of market demand for advanced AI capabilities.