StepFun · Step 3.5
Step 3.5 Flash
Earlier low-cost StepFun text reasoning model, still listed on StepFun's API but superseded by Step 3.7 Flash.
- AA Intelligence
- —
- Input / output per 1M
- $0.10/ $0.30
- Output speed
- —
- Context window
- 262K tokens
Human preference
- LMArena Text#51 of 571394
Leader: Gemini 4 Argon at 1525