StepFun is an AI company that develops the Step family of models. Recent coverage has centered on Step 5 Preview: it was free on OpenCode for one week with 1M context, multi-modal support and zero data retention; it ranked #7 among open-weight models on the Vals leaderboard at $2.54 per task, and scored 44 on the Artificial Analysis Intelligence Index at $0.71 per task.
Your next build is on us. Step 5 Preview is now free in @opencode for one week. Our flagship model for agentic and professional work. Keep your workflow. Switch your model. [Quoting @opencode]: Step 5 Preview is now free on OpenCode for a week - 1M Context -…
Step 5 Preview just landed on the Vals leaderboard. 🚀 [Quoting @ValsAI]: StepFun debuts on the Vals leaderboard with Step 5 Preview, ranking #7 among open-weight models, just ahead of Qwen 3.8 Max. It costs $2.54/task.
Step 5 Preview pushes our intelligence–cost Pareto frontier outward. It comes in at 44 on the Artificial Analysis Intelligence Index, $0.71 per task. Thanks @ArtificialAnlys for putting Step 5 Preview through the full evaluation. More to come on Oct 15. [Quot…
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