OpenAI holds a narrow edge in trader consensus for second place in the Code Arena WebDev benchmark by year-end, reflecting its sustained lead in large language model scale, tool-use benchmarks, and web-development workflow integrations. Anthropic follows closely, differentiated by its emphasis on reasoning depth and safety-aligned coding agents that appeal to enterprise users. Lower odds for Alibaba, Moonshot, and others capture faster iteration cycles in Chinese labs but also highlight gaps in global benchmark visibility and English-language training data. Key swing factors include upcoming model releases, third-party evaluations of real-world web app generation accuracy, and any shifts in developer adoption metrics that could reorder the tightly contested field before December resolution.