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Kimi K3 is a 2.8 trillion-parameter, native multimodal model with a claimed…

2026-07-16 · 18:58 UTC ·@Kimi_Moonshot ·0 min read

Brief

Kimi K3 is presented as an “Open Frontier Intelligence” model with 2.8T parameters, native multimodal support and a 1,000,000-token context. The announcement highlights Kimi Delta Attention for up to 6.3× faster long-context decoding and Attention Residuals for ~25% better training efficiency at <2% extra cost, with availability across Kimi platforms and open weights promised by July 27, 2026.

Why it matters

Kimi K3 is a 2.8 trillion-parameter, native multimodal model with a claimed 1,000,000-token context window.

Key details

  • Kimi Delta Attention reportedly enables up to 6.3× faster decoding in million-token contexts and Attention Residuals claim ~25% higher training efficiency at under 2% additional cost.
  • Kimi K3 is available now on Kimi.com, Kimi Work, Kimi Code, and the Kimi API; Kimi says model weights will be open by July 27, 2026 (API: platform.kimi.ai).
Source evidence

Introducing Kimi K3: Open Frontier Intelligence

🔹 2.8 Trillion Parameters, 1 Million Context, Native Multimodal
🔹 Kimi Delta Attention enables up to 6.3x faster decoding in million-token contexts
🔹 Attention Residuals deliver ~25% higher training efficiency at <2% additional cost
🔹 Built for long-horizon agentic coding and self-evolving workflows

Kimi K3 is now live on on Kimi.com, Kimi Work, Kimi Code, and the Kimi API.
Open Weights by July 27, 2026.

🔗 API: platform.kimi.ai
🔗 Tech blog: kimi.com/blog/kimi-k3