Z.ai Open-Sources GLM-5.1, a 744-Billion-Parameter Model That Tops SWE-Bench Pro Ahead of GPT-5.4 and Claude Opus 4.6
Chinese AI lab Z.ai has released GLM-5.1 under the MIT license, a mixture-of-experts model that claims the top score on the SWE-Bench Pro coding benchmark while introducing agentic capabilities designed to sustain autonomous work sessions lasting up to eight hours.
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