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Z.ai releases open-weight GLM-4.5 and GLM-4.5-Air agentic models

Z.ai released GLM-4.5 and GLM-4.5-Air with open weights and unified reasoning, coding and agent capabilities, including 355-billion and 106-billion-parameter mixture-of-experts variants.

CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM59confidence 93/100

Why it moved the index

Open weights for two strong agentic model tiers expanded international access to reasoning, coding and tool-use capabilities outside controlled services.

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Assessment history

  1. R1
    Toward 59 · confidence 93

    New exact July 2025 open model release anchored to the exact company-wire announcement and official model repositories.

    12 Aug 2026