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...
Rank
#4
No change
Tokens
8.84T
2026-10-11
Requests
47.7M
47,719,581
Tool calls
-
Input / M
$1.00
Output / M
$2.70
Cache / M
$0.05
Context
1M
1,000,000 tokens