# Step 5 Preview vs MiMo-V2.5 - AI Model Comparison

- Page: https://opencode.ai/data/compare/stepfun/step-5-preview/xiaomi/mimo-v2-5
- Updated: 2026-10-09T12:47:54.000Z

|  | Step 5 Preview | MiMo-V2.5 |
| --- | --- | --- |
| Lab | StepFun | Xiaomi |
| Context window | 1M | 1M |
| Max output | 1M | 131K |
| Input modalities | text, image, video | text, image, audio, video |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Open weights | No | Yes |
| Release date | 2026-09-16 | 2026-04-22 |
| Input price per 1M tokens | $0.96 | $0.16 |
| Output price per 1M tokens | $2.74 | $0.32 |
| Cached input price per 1M tokens | $0.05 | $0.0040 |
| OpenCode tokens: past 2 months | 888B | 57T |
| Share of all tokens | 0.1% | 6.0% |
| Rank by tokens last week | #10 | #13 |
| Unique users | 13K | 1.8M |
| Weekly retention | - | 67.8% |

Model pages: [Step 5 Preview](https://opencode.ai/data/stepfun/step-5-preview.md), [MiMo-V2.5](https://opencode.ai/data/xiaomi/mimo-v2-5.md)

## Methodology

- Updates: Aggregated every hour. Days and weeks use UTC.
- Tokens: Input, output, reasoning, and cached tokens for each request.
- Users and sessions: Approximate counts of distinct users and OpenCode sessions.
- Cost: Session cost is the average cost per OpenCode session. Token prices are list prices from the OpenCode model catalog.
- Retention: The share of a model's users in one week who use it again the next week.
- Citation: Cite OpenCode Data (opencode.ai/data) with the update time shown at the top of the page.