Chinese model dominance on OpenRouter, driven by aggressive pricing, open weights, and strong coding/agent performance, has elevated multiple labs into contention for second place behind DeepSeek during the week of September 28. Z.ai's GLM 5.3 Flash and entries from Tencent, Xiaomi, and the surprise Stealth Space Bunny Alpha captured substantial token volume through rapid iteration and low costs, creating tight market-implied odds around 50% for Google, Z.ai, and related providers. Google has narrowed the gap via Gemini Flash gains and request-share growth, while OpenAI and Anthropic remain sidelined on this developer platform. Weekly volatility from new model launches and shifting usage patterns keeps the #2 outcome closely contested, with upcoming data releases likely to resolve sentiment.