All Models

stepfun-ai/Step-3.5-Flash

step Reasoning Tool Calling Structured Output
Providers 2
Released Feb 11, 2026
Input Modalities text
Output Modalities text
Tarsk Use coding

Benchmarks

37.8
Intelligence Index
31.6
Coding Index

Available Providers (2)

Provider Model ID Input Cost Output Cost Context Max Output Docs
SiliconFlow stepfun-ai/Step-3.5-Flash $0.10/MTok $0.30/MTok 262K 262K
SiliconFlow (China) stepfun-ai/Step-3.5-Flash $0.10/MTok $0.30/MTok 262K 262K

Capabilities

Reasoning
Tool Calling
Attachments
Open Weights
Structured Output