Stepfun · stepfun/step-5-preview
StepFun: Step 5 Preview
step-5-preview
Specialist 1000k context Hermes Usable Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in software engineering and professional...
Input / M
$1.000
Output / M
$2.700
Value score
137.69
30d price Δ
0%
Reasoning (AA)
43.7
Coding (AA)
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Tool / agentic
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Knowledge cutoff
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Price history
Not enough history yet — newer than the backfill window.
Capability snapshot
Last-known Artificial Analysis indexes via OpenRouter.
| Index | Score |
|---|---|
| context | 99.6 |
| general_intelligence | 43.7 |
| reasoning | 43.7 |