StepFun's Step 5 Preview scores 44 on the Artificial Analysis Intelligence Index,…
This is a AI post classified by Jev as Frontier models (a model release), kept by the AI Radar because it carries real work, not commentary.
StepFun's Step 5 Preview scores 44 on the Artificial Analysis Intelligence Index, matching Kimi K3 (max) at ~2.8x lower cost per task, but trails peers on agentic evaluations Step 5 Preview is @StepFun_ai's new flagship model, with 600B total and 27B active parameters, succeeding Step 3.7 Flash (released May 2026). It scores 44 on the Intelligence Index, level with Kimi K3 (max) and just behind GLM-5.3 (max, 45) and Qwen3.8 Max (45) Key takeaways: ➤ Step 5 Preview costs ~2.8x less per Intelligence Index task than models at the same score. It costs ~$0.72 per task, against ~$2.00 for Kimi K3
Posted by Artificial Analysis (146.2k followers) 1 h ago · 71 likes · 6.3k views · view the original post on X. Kept by the AI Radar as Frontier models.
More AI work like this
- 小米正式发布并开源 MiMo-V2.6 系列，包含 Pro 和 Flash 两个原生多模态模型。 — @dotey
- New cheap highly effective model just dropped. New frontier — @Perpetualmaniac
- Grok 4.7 vs 4.6, round 2. — @WescheNex1q
- Bro… Grok 4.7 made this entire game in minutes from just a single-line prompt. — @cb_doge
- Private benchmarks useful b/c much easier to hillclimb on public ones than to have "big… — @Afinetheorem
- @BecomingCritter — @BecomingCritter
- 给我看爽了，一觉醒来 Grok 4.7 和 MiMo V2.6 都发布了。不过看起来 Grok 4.7 可以收拾东西回家了。 — @Fei2411
- 真有这么多人用Grok 4.7吗，怎么把老马的世界第一算力中心都打挂了 — @xueyu1125
Every post is read and classified by Jev (TypeSafe): what it is, which market it belongs to, and whether the link is a real tool. 40.8k posts from 5k X accounts over the last 14 days, 1.7k tools, 19 markets. Collected every 5 minutes, fully re-ranked every hour — last update 2026-09-22 02:45 UTC. Full method.