StepFun is a leading Chinese AI company in 2026, offering the StepFun AI chat platform powered by their flagship Step3 and Step 3.5 Flash models. Built on Mixture-of-Experts architecture with 321B total parameters and 38B active, StepFun excels in reasoning, coding, and multimodal tasks—achieving 74.4% on SWE-bench Verified and topping AIME 2025 benchmarks.

AI问客 (ai.myprad.com) is a modern AI chat platform in 2026, offering conversational AI interactions in a sleek interface, likely supporting general chat, queries, and possibly multimodal features. It appears as a Chinese-language focused or regional AI chat tool ("AI问客" translates to "AI Question Guest"), with a clean dark/light mode UI for user-friendly conversations. Free access likely available, suitable for everyday users seeking quick AI assistance, information, or creative chats.