# Hy4 preview vs MiMo-V2.5-Pro - AI Model Comparison

- Page: https://opencode.ai/data/compare/tencent/hy4-preview/xiaomi/mimo-v2-5-pro
- Updated: 2026-10-19T22:53:58.000Z

|  | Hy4 preview | MiMo-V2.5-Pro |
| --- | --- | --- |
| Lab | Tencent | Xiaomi |
| Context window | 1M | 1M |
| Max output | 64K | 131K |
| Input modalities | text | text |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Open weights | Yes | Yes |
| Release date | 2026-08-28 | 2026-04-22 |
| Input price per 1M tokens | $0.83 | $0.43 |
| Output price per 1M tokens | $2.50 | $0.87 |
| Cached input price per 1M tokens | - | $0.0036 |
| OpenCode tokens: past 2 months | 351B | 930B |
| Share of all tokens | 0.0% | 0.1% |
| Rank by tokens last week | #38 | #32 |
| Unique users | 51K | 94K |
| Weekly retention | 54.1% | 63.6% |

Model pages: [Hy4 preview](https://opencode.ai/data/tencent/hy4-preview.md), [MiMo-V2.5-Pro](https://opencode.ai/data/xiaomi/mimo-v2-5-pro.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.