Step-1o Turbo (202506)
StepFunProprietary
Step-1o Turbo (202506) is a vision-language model from StepFun. It ranks 102 of 167 on LMArena’s overall vision board with 1186±14 from 1,895 votes. Its best category is Diagrams (#101 of 123). License: Proprietary.
Key figures
- Developer
- StepFun
- License
- Proprietary
- First seen (our snapshots)
- 2026-10-26
No data: Captioning, Entity recognition, Creative writing, Humor, Chinese.
Who it suits
- Overall #102 of 167: lower half; consider it mainly for cost or deployment reasons.
- Strongest category: Diagrams (#101 of 123).
- Proprietary; used through StepFun’s apps or API.
Neighbours on the overall board
| # | Model | Score | Votes | License | Δ vs this model |
|---|---|---|---|---|---|
| 99 |  Claude Opus 4 (Thinking 16K, 20250514) Anthropic | 1192 | 1,290 | Proprietary | +6 |
| 100 | Claude Sonnet 4 (Thinking 32K, 20250514) Anthropic | 1191 | 1,144 | Proprietary | +5 |
| 101 |  Gemini 2.5 Flash-Lite Preview (Thinking, 06-17) Google | 1187 | 35,914 | Proprietary | +1 |
| 102 | SStep-1o Turbo (202506) StepFun | 1186 | 1,895 | Proprietary | |
| 103 |  GPT-4.1 mini (2025-04-14) OpenAI | 1181 | 40,201 | Proprietary | -5 |
| 104 |  Hunyuan Large Vision Tencent | 1180 | 1,274 | Proprietary | -6 |
| 105 | Hunyuan Vision 1.5 Thinking Tencent | 1180 | 2,424 | Proprietary | -6 |
Alternatives · More from StepFun
| # | Model | Score | Votes | License |
|---|---|---|---|---|
| 49 | SStep 5 Preview StepFun | 1265 | 1,649 | Proprietary |
| 106 | SStep-3 StepFun | 1176 | 3,193 | Apache 2.0 |
| 127 | SStep-1o Vision 32K (High Res) StepFun | 1122 | 2,833 | Proprietary |
| 142 | SStep-1V 32K StepFun | 1046 | 1,534 | Proprietary |
Alternatives · Top open-weight models
| # | Model | Score | Votes | License |
|---|---|---|---|---|
| 24 |  GLM-5.3-Flash Z.ai | 1294 | 16,254 | MIT |
| 34 |  Kimi K2.6 Moonshot AI | 1282 | 16,368 | Modified MIT |
| 38 |  DeepSeek-V4.1-Flash-20260910 (Max) DeepSeek | 1278 | 4,100 | MIT |
| 39 | Gemma 4 31B Google | 1276 | 40,219 | Apache 2.0 |
| 44 |  Qwen3.8-27B Alibaba | 1269 | 7,614 | Apache 2.0 |
How to read these scores
- If two scores differ by less than their ± intervals, the models are statistically close.
- Each category board is computed independently; do not compare scores across categories.
- Models with few votes move more; ranks of new entries may change.
FAQ
Where does Step-1o Turbo (202506) rank among vision models?
Overall rank 102 (1186); OCR rank 104 (1177); Diagrams rank 101 (1185); Homework rank 114 (1155); English rank 93 (1212) (LMArena, data as of Oct 26, 2026).
How good is Step-1o Turbo (202506) at OCR?
Step-1o Turbo (202506) ranks 104 of 123 on LMArena’s OCR board with 1177 (1,244 votes).
Is Step-1o Turbo (202506) open-weight?
No. LMArena lists it as Proprietary; it is available through StepFun’s apps or API.
How far is Step-1o Turbo (202506) from #1?
#1 overall is Claude Fable 5 (High) (1325); Step-1o Turbo (202506) has 1186, 139 points behind.
Sources
LMArena data published Oct 19, 2026.
Synced here Oct 26, 2026.
Price, context length and release date have no reliable public data here and are not shown; all figures come from snapshots, blanks are –.