iFlytek has announced a major upgrade to the Spark API platform. This upgrade includes the Spark Max model and the 4.0 Ultra model, which have improved generation speeds by 70%, while also achieving significant breakthroughs in key performance areas such as logical reasoning, creativity, and online search. The upgraded Spark Max and 4.0 Ultra models demonstrate faster speeds and greater accuracy in logical reasoning, especially in handling complex tasks, providing detailed reasoning processes.