Meta's Muse Spark 1.3 series has driven the 81% implied probability for third place, as its scores in agentic web development tasks on the Code Arena WebDev leaderboard place the lab at or near the top tier behind Anthropic and OpenAI. Recent updates, including Moonshot's Kimi K3.1 Pro release on October 23 that lifted it to fourth among labs, and DeepSeek-V4.1-Flash gains for open models, have intensified competition without displacing Meta's positioning. Google and Alibaba sit close in lab rankings, but Meta's consistent model performance and cost-efficiency metrics support trader consensus for a third-place finish by October 31. Upcoming model iterations or leaderboard refreshes before month-end remain key swing factors.