GLM-5.1 vs Claude Sonnet 4.6 Programming Comparison: 6-Dimensional Benchmark Test, Which Is the Strongest Coding Large Language Model of 2026?
In April 2026, the two coding models most frequently discussed among developers in mainland China were GLM-5.1 and Claude Sonnet 4.6. The former was just open-sourced by Z.ai (formerly Zhipu) under the MIT license, topping the global open-source coding leaderboard by scoring 58.4 on SWE-Bench Pro, surpassing Claude Opus 4.6, GPT-5.4, and Gemini 3.1 Pro….
