Kimi is Moonshot AI’s long-context model family. The Kimi K2 series ships under permissive open weights and leads many open agent leaderboards on tool-use and reasoning benchmarks.
See all models from Moonshot AIModels in family
6
Open weight
6
API only
0
Avg score
58.8
Top benchmark
97.1
MATH-500
Total HF downloads
6.8M
Primary modality
Text
Context window
128K – 262K
First release
Jul 2025
Latest release
Jun 2026
Every release in the Kimi family, ranked by composite score across benchmarks, popularity, efficiency, and versatility.
| # | Model | Modality | Score | Params | Released |
|---|---|---|---|---|---|
| 1 | text | AA70.5 | 1.0T | Apr 2026 | |
| 2 | text | BB68.3 | 1.0T | Jan 2026 | |
| 3 | text | BB55.1 | 1.0T | Jul 2025 | |
| 4 | text | CC54.3 | 1.0T | Jun 2026 | |
| 5 | text | CC53.4 | 1.0T | Oct 2025 | |
| 6 | text | CC51.2 | 1.0T | Sep 2025 |
When each release shipped, newest first. Useful for tracking version cadence.
Jun 12
Apr 20
Jan 26
Oct 31
Jul 10
Composite grades across this family. Higher is better, blending benchmarks, popularity, and efficiency.
Models with downloadable weights, ranked by composite score.
| # | Model | Modality | Score | Params | Released |
|---|---|---|---|---|---|
| 1 | text | AA70.5 | 1.0T | Apr 2026 | |
| 2 | text | BB68.3 | 1.0T | Jan 2026 | |
| 3 | text | BB55.1 | 1.0T | Jul 2025 | |
| 4 | text | CC54.3 | 1.0T | Jun 2026 | |
| 5 | text | CC53.4 | 1.0T | Oct 2025 | |
| 6 | text | CC51.2 | 1.0T | Sep 2025 |
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