Provider, China

# StepFun models

> StepFun's highest-ranked model is Step 5 Preview, #58 on the Noometry Index as of October 2026. Noometry tracks 8 StepFun models, 3 with open weights. Benchmarks, prices and context windows for every StepFun model.
- Canonical page: https://noometry.com/providers/stepfun
- Last updated: 2026-10-10
- Title: StepFun AI Models Ranked (October 2026) | Noometry

StepFun's highest-ranked model is Step 5 Preview, #58 on the Noometry Index as of October 2026. Noometry tracks 8 StepFun models, 3 with open weights.

Last verified October 10, 2026

[www.stepfun.com](https://www.stepfun.com)

StepFun models
|  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 58 |  ![](/logos/stepfun.svg) StepFun [Step 5 Preview](https://noometry.com/models/step-5-preview) | [StepFun](https://noometry.com/providers/stepfun) | Proprietary | 1.02M | 47.9 | $1 | $2.70 | 33.6 | — |
| 116 |  ![](/logos/stepfun.svg) StepFun [Step 3.5 Flash](https://noometry.com/models/step-3-5-flash) | [StepFun](https://noometry.com/providers/stepfun) | Open | 256K | 42.3 | $0.10 | $0.30 | 282 | — |
| 149 |  ![](/logos/stepfun.svg) StepFun [Step 3](https://noometry.com/models/step-3) | [StepFun](https://noometry.com/providers/stepfun) | Open | — | 40.5 | — | — | — | 7 |
| 160 |  ![](/logos/stepfun.svg) StepFun [Step 1o Turbo 202506](https://noometry.com/models/step-1o-turbo-202506) | [StepFun](https://noometry.com/providers/stepfun) | Proprietary | — | 39.7 | — | — | — | — |
| 171 |  ![](/logos/stepfun.svg) StepFun [Step 2 16k Exp 202412](https://noometry.com/models/step-2-16k-exp-202412) | [StepFun](https://noometry.com/providers/stepfun) | Proprietary | — | 39.2 | — | — | — | — |
| 207 |  ![](/logos/stepfun.svg) StepFun [Step 3.7 Flash](https://noometry.com/models/step-3-7-flash) | [StepFun](https://noometry.com/providers/stepfun) | Open | 256K | 37.3 | $0.18 | $1.11 | 89.6 | — |
|  |  ![](/logos/stepfun.svg) StepFun [Step 1 (32K)](https://noometry.com/models/step-1) | [StepFun](https://noometry.com/providers/stepfun) | Proprietary | 33K | Not ranked | $2.05 | $9.59 | — | — |
|  |  ![](/logos/stepfun.svg) StepFun [Step 2 (16K)](https://noometry.com/models/step-2) | [StepFun](https://noometry.com/providers/stepfun) | Proprietary | 16K | Not ranked | $5.21 | $16.44 | — | — |

## StepFun's best vs other flagships

-   [Step 5 Preview vs Qwen3.8 Max](https://noometry.com/compare/qwen3-8-max-vs-step-5-preview)
-   [Step 5 Preview vs GPT-6 Astra](https://noometry.com/compare/gpt-6-astra-vs-step-5-preview)
-   [Step 5 Preview vs Gemini 3.8 Flash](https://noometry.com/compare/gemini-3-8-flash-vs-step-5-preview)
-   [Step 5 Preview vs Claude Fable 5.1](https://noometry.com/compare/claude-fable-5-1-vs-step-5-preview)
-   [Step 5 Preview vs Muse Spark 1.3](https://noometry.com/compare/muse-spark-1-3-vs-step-5-preview)
-   [Step 5 Preview vs Mistral Large 4](https://noometry.com/compare/mistral-large-4-vs-step-5-preview)

## Frequently asked questions

### What is the best StepFun model?

StepFun's highest-ranked model is Step 5 Preview, #58 on the Noometry Index as of October 2026. Noometry tracks 8 StepFun models, 3 with open weights.

### What is the cheapest StepFun model?

Step 3.5 Flash has the lowest input price among StepFun models we track: $0.10 per million input tokens and $0.30 per million output tokens.