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Step 5 Preview: Advancing the Pareto Frontier

141 points · 33 comments · nateb2022

nh43215rgb · 1789885567 · focus · HN ↗
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  &gt; Built on a sparse Mixture-of-Experts architecture, Step 5 Preview has 600B total parameters, with 27B active per token, and supports a 1M-token context window and vision input.

  &gt; Step 5 Preview scores 44 on the Artificial Analysis Intelligence Index.

  &gt; The model will be released with open weights on October 15.
```
I guess being Chinese company they decided to skip version 4, while also giving impression to be on the similar iteration with leading companies (claude opus 5). I wonder if other Chinese labs like Kimi/Moonshot will follow suit.
1. Tepix · 1789908087 · focus · HN ↗
  600b-a27b doesn’t sound enticing. Also with the higher number of active parameters compared to GLM 5.3 flash and DeepSeek V4/4.1 flash, I don’t see how they want to be more efficient at inference.

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