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Moonshot AI releases open-weight Kimi K2 base and instruction models

Moonshot AI published Kimi K2, a trillion-parameter mixture-of-experts family with 32 billion active parameters, open weights and an instruction model designed for tool use and agentic tasks.

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CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM55confidence 93/100

Why it moved the index

Public weights for a large agentic model family materially expanded access to advanced reasoning, coding and tool-use capability outside controlled APIs.

Assessment history

  1. R1
    Toward 55 · confidence 93

    New open-weight July 2025 release with exact official repository and model-publication timestamps; no durable collision.

    12 Aug 2026

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  1. DoomBench assesses “Moonshot AI releases open-weight Kimi K2 base and instruction models” as evidence moving toward doom, with magnitude 55 and confidence 93 out of 100 in the competitive race category.

  2. The DoomBench assessment of “Moonshot AI releases open-weight Kimi K2 base and instruction models” is based on reporting from Moonshot AI and records the editorial rationale, source quality, attribution, and revision history.

  3. DoomBench summarizes “Moonshot AI releases open-weight Kimi K2 base and instruction models” as follows: Moonshot AI published Kimi K2, a trillion-parameter mixture-of-experts family with 32 billion active parameters, open weights and an...

    https://www.doombench.com/news/moonshot-ai-releases-open-weight-kimi-k2-base-and-instruction-models-2025-07-11