# Step 5 Preview — price & specs

Source: https://modelbank.ai/models/step-5-preview · updated 2026-11-01 · ModelBank

| Field | Value |
|---|---|
| Vendor | StepFun |
| Input price | $1 / 1M tokens |
| Output price | $2.7 / 1M tokens |
| Cached input | $0.1 / 1M tokens |
| Context window | 1,048,576 tokens |
| Max output | 64,000 tokens |
| Input modalities | text,image,video |
| Reasoning / tool use | yes / yes |
| Intelligence / coding index | 28.5 / — |
| Released | 2026-10-08 |
| Retirement date | none announced |

## About

Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in software engineering and professional...

## Price history

- 2026-10-08: $1 in / $2.7 out

## Cheaper alternatives with similar intelligence

- [GLM 5.3 Flash](https://modelbank.ai/models/glm-5.3-flash): $0.013 / $0.0168, intelligence 27.8
- [MiMo-V2.6-Flash](https://modelbank.ai/models/mimo-v2.6-flash): $0.14 / $0.28, intelligence 26.7
- [Claude Haiku 5.5](https://modelbank.ai/models/claude-haiku-5.5): $0.1 / $0.5, intelligence 36.2
- [GPT-6 Luna](https://modelbank.ai/models/gpt-6-luna): $0.1 / $0.5, intelligence 27.8
- [MiniMax M3.1 Flash](https://modelbank.ai/models/minimax-m3.1-flash): $0.15 / $0.6, intelligence 28.9

JSON: https://modelbank.ai/api/v1/models/step-5-preview