🚨BREAKING: China's StepFun has officially launched Step 5 Preview, a 600B MoE model…
This is a dev post classified by Jev as Other (a launch), kept by the Dev Radar because it carries real work, not commentary.
🚨BREAKING: China's StepFun has officially launched Step 5 Preview, a 600B MoE model with just 27B active parameters and a 1M-token context window. Step 5 Preview matches Kimi K3 (max) at 44 on Artificial Analysis, but at about 65% lower cost per task. StepFun is now on the cost/intelligence Pareto frontier. The model is available via API now, and StepFun says it will release the weights on October 15. China keeps shipping
Posted by Choblin (2.6k followers) 1 h ago · 10 likes · 370 views · view the original post on X. Kept by the Dev Radar as Other.
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