Moonshot AI
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Listed January 2026
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Open Weights
Kimi K2.5
Arena #78 • score 1450 ±3
Open Weights model from Moonshot AI, listed January 2026. Arena text score 1450 (#78 of 414 entries). $0.50 input / $2.50 output per 1M tokens. 256K tokens context.
Parameters
Not listed in our sources
Context Window
256K tokens
Input / 1M tokens
$0.50
Output / 1M tokens
$2.50
Benchmark Results
- Arena Text Elo: 1450 (#78 of 414 on arena.ai · ±3 · 74,811 votes · variant: kimi-k2.5-thinking)
- OSWorld-Verified: 63.3% (Success rate · 100 steps · tested 2026-01-31)
- SWE-bench Verified: 70.8% (mini-SWE-agent (bash only) · run 'Kimi K2.5 (high)' · 2026-02-17)
- AA Intelligence Index: 23.5 (Artificial Analysis v4.3 · best setting: Kimi K2.5 (Reasoning) · checked 2026-10-11)
- AA Coding Index: 46.8 (Artificial Analysis v4.3 · best setting: Kimi K2.5 (Reasoning) · checked 2026-10-11)