Step 3.5 Flash
StepFun closed 2026-02-02
Legacy
Low-cost
Step 3.5 Flash costs less than the executioner, Claude Haiku 5.5 ($0.20), and scores lower: the pick when price comes first.
- Score
- 17.0 est.
- Artificial Analysis Intelligence Index
- Best rank
- #169
- Arena — Text
- Price
- $0.15
- Blended Price, USD per 1M tokens (3:1 input:output)
No longer listed as current by its source, so this page shows only the verdict and its scores.
Scores on each board Each rank is the board’s own: the rank it publishes, or the model’s place in the board’s own order where it publishes none. The bar shows how much of that board the model ranks ahead of. Scores from different boards cannot be compared.
- Artificial Analysis LLM LeaderboardArtificial Analysis Intelligence Indexest.17.0No. 135 of 375
- Arena — TextOverall (style control)1393No. 169 of 414
Compare with the executioner, Claude Haiku 5.5 → See the current SOTA models →
Details
- Family
- Step
- Blended Price, USD per 1M tokens (3:1 input:output)
- $0.15
- Sources
- 2 boards ·3 scores ·2 settings
- Also written as
-
Step 3.5 Flashstepfun-ai/Step-3.5-Flashstep-3.5-flashstep-3-5-flash