This model is 20 months old. A newer version of it has since shipped: Kimi K3 (2026-07-16). The details below are still accurate for this model — it just is not what we would recommend today.
Kimi k1.5
Moonshot AI🇨🇳 China
Moonshot's first long-chain-of-thought multimodal reasoning model, matching o1 on math and coding at launch.
Context window131K tokens