Carl Franzen / VentureBeat:Z.ai releases GLM-5.1, a 754B-parameter model that it says outperforms GPT-5.4 and Claude Opus 4.6 on SWE-bench Pro, available under an MIT license — Is China picking back up the open source AI baton? — Z.ai, also known as Zhupai AI, a Chinese AI startup best known for its powerful …