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Models · Updated 23 Oct, 10:29 pm IST

Kimi launches K3.1 Pro and K3.1 Pro Highspeed with 1M-token context

Image: Hacker News (100+ points)

Why it matters for readers: It shows progress in open-weight models offering long context windows and faster interaction options for complex tasks.

  • K3.1 Pro is a post-trained upgrade to K3 with larger post‑training compute and optimizations across RL, long-context inference, and training infrastructure.1
  • The model provides a 1 million token context window and is positioned to improve performance on coding, 3D creation, financial modeling, and agentic benchmarks.12
  • K3.1 Pro Highspeed has the same capabilities but runs about 2–3× faster for more responsive interactions.12
  • Kimi made K3.1 Pro and Highspeed available immediately via Kimi.ai, Kimi Work, Kimi Code and the Kimi API, with full model weights to be released by Nov 4.1
  • Kimi Code lists multiple model IDs across the K3.1 Pro family and recommends using native APIs and starting new sessions for best results.2

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How this story developed

  1. 23 Oct, 10:29 pm · Hacker News (100+ points)

    Kimi K3.1 Pro and K3.1 Pro Highspeed

  2. 23 Oct, 10:29 pm · Hacker News (100+ points)

    Kimi K3.1 Pro and K3.1 Pro Highspeed