Zhipu AI Ships GLM-5.2 Open Weights: 1M Context, Top Open-Source Coding Model at One-Sixth GPT-5.5 Cost
Read this because The open-weights gap to frontier closed models is now measured in single-digit benchmark points. For self-hosting builders, GLM-5.2 changes the build-vs-buy math on agentic coding.
Z.ai released GLM-5.2 under MIT license on June 17 — a 753B-param MoE with 1M context topping open-source coding benchmarks at ~1/6 of GPT-5.5 cost.