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.
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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.
Assessment history
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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
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DoomBench assesses “Z.ai releases open-weight GLM-4.5 and GLM-4.5-Air agentic models” as evidence moving toward doom, with magnitude 59 and confidence 93 out of 100 in the competitive race category.
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The DoomBench assessment of “Z.ai releases open-weight GLM-4.5 and GLM-4.5-Air agentic models” is based on reporting from Z.ai via PR Newswire and records the editorial rationale, source quality, attribution, and revision history.
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DoomBench summarizes “Z.ai releases open-weight GLM-4.5 and GLM-4.5-Air agentic models” as follows: 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...
https://www.doombench.com/news/z-ai-releases-open-weight-glm-4-5-and-glm-4-5-air-agentic-models-2025-07-28