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.
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.
AUDIT TRAIL
Assessment history
- R1Toward 54 · confidence 60
New exact long-horizon model absent from durable context.
11 Aug 2026