Kimi Chat
Moonshot's first assistant launched with a roughly 200,000-Chinese-character context window, pitched as the longest productized context available at the time.
Moonshot, six months old, made long context its product identity, with about 200K Chinese characters per conversation (claimed 2.5x Claude-100k by its own tests). It was a closed beta only, but it set the 'long text' positioning that later drove Kimi's 2024 user surge.
- Date
- Monday, 9 October 2023
- Lab
- Moonshot AI
- Kind
- product
- Access
- app only
Figures
| Measure | Value | Measured by |
|---|---|---|
| Context window | ~200,000 Chinese characters company claim at launch; closed beta | company |
China Daily (reprinting the company announcement) dates the launch to 2023-10-09. Wikipedia gives a broader public release on 2023-11-16 for the Moonshot-model-based Kimi.
Sources
- web.archive.org/web/20250121191529/https://cn.chinadaily.com.cn/a/202310/10/WS652517eaa310
- en.wikipedia.org/wiki/Moonshot_AI
- cn.chinadaily.com.cn/a/202310/10/WS652517eaa310d5acd87694a2.html
This record was checked against its sources on 6 October 2026. How we check