# DeepSeek V4 Flash vs Hy4 - AI Model Comparison

- Page: https://opencode.ai/data/compare/deepseek/deepseek-v4-flash/tencent/hy4
- Updated: 2026-11-05T07:10:33.000Z

|  | DeepSeek V4 Flash | Hy4 |
| --- | --- | --- |
| Lab | DeepSeek | Tencent |
| Context window | 1M | 1M |
| Max output | 384K | 66K |
| Input modalities | text | text, image |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Open weights | Yes | No |
| Release date | 2026-04-24 | 2026-11-04 |
| Input price per 1M tokens | $0.14 | $0.46 |
| Output price per 1M tokens | $0.28 | $1.39 |
| Cached input price per 1M tokens | $0.0028 | $0.02 |
| OpenCode tokens: past 2 months | 55T | 11B |
| Share of all tokens | 4.2% | 0% |
| Rank by tokens last week | #41 | #36 |
| Unique users | 1.2M | 1.7K |
| Weekly retention | 60.3% | - |

Model pages: [DeepSeek V4 Flash](https://opencode.ai/data/deepseek/deepseek-v4-flash.md), [Hy4](https://opencode.ai/data/tencent/hy4.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.