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Kimi K3
Moonshot AI's flagship multimodal reasoning model released in July 2026. It has 2.8 trillion total parameters and combines an MoE architecture with Kimi Delta Attention and Attention Residuals, native vision, and a 1-million-token context window for long-horizon coding, knowledge work, and deep reasoning.
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- 01Moonshot AI Launches Kimi K3: 2.8T Parameters, 1M-Token Context, and Full Open Weights Due by July 27Moonshot AI launched its flagship Kimi K3 model on July 16, 2026. The 2.8-trillion-parameter MoE model natively supports vision and a 1-million-token context window. It is live across Kimi, Kimi Work, Kimi Code, and the API, with full model weights scheduled for release by July 27.7/17/2026
- 02Kimi K3 Benchmarks Explained: No. 1 in Frontend Arena, Still Behind Claude Fable 5 and GPT-5.6 Sol OverallKimi K3 leads seven of Moonshot AI's 35 published comparisons and jointly leads one more, while Arena ranks it first for frontend development and ninth in text overall. For a workload using 1M input and 200K output tokens with no cache hits, K3 costs about $6—70% less than Claude Fable 5 and roughly 45% less than GPT-5.6 Sol, but about 2.63 times the listed cost of GLM-5.2.7/17/2026