Step 5 Preview tops OpenRouter Trending: 600B MoE with 27B active and 1M context

JaynitMakwana · x · 2026-10-09

StepFun's Step 5 Preview has hit #1 on OpenRouter Trending. A blogger wired it into Claude Code and had it build a playable finance game end to end: the model planned game logic, built the UI, wrote code, and handled state and scoring in the browser. Each round forces a choice among saving, investing, spending, emergency fund, or a high-risk bet, testing long-horizon financial reasoning. Specs: 600B MoE with only 27B active parameters, 1M context window, vision support, aimed at long-horizon agent workflows.

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