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Autonomy and agency

Z.ai releases GLM-5.1 for eight-hour autonomous task execution

Z.ai released GLM-5.1 through its API with long-horizon planning, tool use, iterative testing, repair, and claimed autonomous execution lasting up to eight hours.

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CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM54confidence 60/100

Why it moved the index

Public API access to a model designed for sustained closed-loop execution advances consequential autonomy, but the eight-hour performance claim is developer-reported and lacks independent validation.

Assessment history

  1. R1
    Toward 54 · confidence 60

    New exact long-horizon model absent from durable context.

    11 Aug 2026

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DoomBench social sharing card for Z.ai releases GLM-5.1 for eight-hour autonomous task execution.

  1. DoomBench assesses “Z.ai releases GLM-5.1 for eight-hour autonomous task execution” as evidence moving toward doom, with magnitude 54 and confidence 60 out of 100 in the autonomy and agency category.

  2. The DoomBench assessment of “Z.ai releases GLM-5.1 for eight-hour autonomous task execution” is based on reporting from Z.ai and records the editorial rationale, source quality, attribution, and revision history.

  3. DoomBench summarizes “Z.ai releases GLM-5.1 for eight-hour autonomous task execution” as follows: Z.ai released GLM-5.1 through its API with long-horizon planning, tool use, iterative testing, repair, and claimed autonomous execution...

    https://www.doombench.com/news/z-ai-releases-glm-5-1-for-eight-hour-autonomous-task-execution-2026-04-07