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DX Today | No-Hype Podcast & News About AI & DX

Forty Four on the Index, One Fifth the Price: StepFun's Six Hundred Billion Parameter Bid at the Frontier, September 20, 2026

September 20, 2026·13 min
Episode Description from the Publisher

Forty Four on the Index, One Fifth the Price: StepFun's Six Hundred Billion Parameter Bid at the Frontier, September 20, 2026 Shanghai startup StepFun released Step 5 Preview, a six hundred billion parameter sparse mixture of experts model that ties Kimi K3 on the Artificial Analysis Intelligence Index while charging less than a fifth of the output price. Rick Spair and Laura dig into the architecture, the benchmark numbers, the verbosity problem hiding behind that attractive per token price...

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