GLM-5.1 Works Full Shifts and Outperforms GPT-5.4 on Real Code
China just shipped an open-source AI agent that works an eight-hour shift, and the benchmark numbers say it's beating GPT and Claude at actual engineering work. Z.ai released GLM-5.1 under MIT license, a 754-billion parameter model designed to run autonomously for up to eight hours on a single task
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