Kimi K2 Thinking is Moonshot AI’s most advanced open reasoning model to date, extending the K2 series into agentic, long-horizon reasoning. Built on the trillion-parameter Mixture-of-Experts (MoE) architecture introduced in...
MoonshotAI: Kimi K2 Thinking — Moonshot AI. Context window 262,144 tokens. API pricing (per 1M tokens): Input $0.6, Output $2.5. License: Proprietary. LMArena 1,380.
| Provider | Moonshot AI |
|---|---|
| API model ID | moonshotai/kimi-k2-thinking |
| Tier | Frontier |
| Context window | 262,144 tokens |
| Max output | 235,929 tokens |
| License | Proprietary |
| API pricing (per 1M tokens) · Input | $0.6 |
| API pricing (per 1M tokens) · Output | $2.5 |
| LMArena | 1,380 (kimi-k2-0905-preview) |
LMArena (CC-BY 4.0, best reasoning setting, 2026-10-02) · GPQA Diamond: Epoch AI (CC-BY 4.0)
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