Step 5 Preview
StepFunProprietary
Step 5 Preview is a vision-language model from StepFun. It ranks 49 of 167 on LMArena’s overall vision board with 1265±15 from 1,649 votes. Its best category is Diagrams (#27 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 #49 of 167: upper half.
- Strongest category: Diagrams (#27 of 123).
- Proprietary; used through StepFun’s apps or API.
Neighbours on the overall board
| # | Model | Score | Votes | License | Δ vs this model |
|---|---|---|---|---|---|
| 46 |  Kimi K2.5 (Thinking) Moonshot AI | 1269 | 28,249 | Modified MIT | +4 |
| 47 |  GPT-5.2 Chat (20260210) OpenAI | 1268 | 16,465 | Proprietary | +3 |
| 48 |  Gemini 3 Flash (Minimal) Google | 1266 | 37,173 | Proprietary | +1 |
| 49 | SStep 5 Preview StepFun | 1265 | 1,649 | Proprietary | |
| 50 |  GLM-5V-Turbo Z.ai | 1264 | 42,757 | Proprietary | -1 |
| 51 | Gemini 2.5 Pro Google | 1263 | 88,755 | Proprietary | -2 |
| 52 |  Grok 4.6 (High) xAI | 1263 | 7,261 | Proprietary | -2 |
Alternatives · More from StepFun
| # | Model | Score | Votes | License |
|---|---|---|---|---|
| 102 | SStep-1o Turbo (202506) StepFun | 1186 | 1,895 | 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 5 Preview rank among vision models?
Overall rank 49 (1265); OCR rank 42 (1282); Diagrams rank 27 (1308); Homework rank 66 (1265); English rank 29 (1290) (LMArena, data as of Oct 26, 2026).
How good is Step 5 Preview at OCR?
Step 5 Preview ranks 42 of 123 on LMArena’s OCR board with 1282 (1,102 votes).
Is Step 5 Preview open-weight?
No. LMArena lists it as Proprietary; it is available through StepFun’s apps or API.
How far is Step 5 Preview from #1?
#1 overall is Claude Fable 5 (High) (1325); Step 5 Preview has 1265, 60 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 –.