GLM-5.2

GLM-5.2 is Zhipu AI's (02513.HK) open-source flagship large language model, launched in June 2026 with a strong emphasis on coding and agentic tasks, and open-sourced on day one — Biren Technology's BR166 chips even completed "Day0" vLLM adaptation for it. It earned a reputation as a coding powerhouse: independent reviewer 葬AI's benchmark ranked it first, concluding it "genuinely reached Claude Opus 4.8 level," crediting Zhipu's post-training pipeline for programming scenarios. Its lead proved short-lived, though — 葬AI's broader take was that large models are "manufacturing, not alchemy," with DeepSeek-V4-Flash reportedly matching GLM-5.2 at a third of the parameters within weeks. By September 2026, Zhipu had already moved on to GLM-5.3-Flash, the GLM-5 series' first natively multimodal model, which per Qiming Venture Partners comprehensively surpassed GLM-5.2 at one-tenth the price.