1LLM1
#17StepFunClosed weights

Step 5 Preview

Step 5 Preview scores 43.7 on the Artificial Analysis Intelligence Index (highest reasoning-effort setting). List price $1 input / $2.7 output per 1M tokens.

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Overall
67.2
Input $/M
$1.00
Output $/M
$2.70
Context
1M
Released
Sep 18, 2026
Updated
Oct 3, 2026

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