GLM 5.2

• 🎯 Z.ai's newest flagship GLM, current incumbent of the line
• 📏 Massive 1M-token context window
• 🧠 Near-Opus reasoning with fast inference
• 🔧 Function calling and web search supported
• 📜 Open-weight under permissive MIT license
• 🌍 Strong multilingual and instruction-following ability

Z.ai

Z.ai, formally Knowledge Atlas Technology Joint Stock Co., Ltd., is a Chinese technology company specializing in artificial intelligence. Previously known internationally as Zhipu AI, the company rebranded to Z.ai in 2025. Its core focus is the GLM family of…

GLM 5.2 is Z.ai's latest large language model and the current head of the open-source GLM line, released in June 2026. It pushes the series' reasoning, instruction-following, and multilingual strengths further, pairing them with a one-million-token context window and fp8 quantization for fast inference across long documents and extended analysis. Z.ai — the Chinese AI company formerly known as Zhipu AI — has shipped the GLM family under the permissive MIT license since mid-2025, and GLM 5.2 continues that fully open-weight tradition.

Within the lineup, GLM 5.2 supersedes the earlier GLM 5.1 (April 2026) and GLM 5 (February 2026), and stands above the prior-generation GLM 4.7. It builds on the same core line rather than the lighter Turbo and Flash variants, positioning it as the reasoning-focused workhorse of the family.

With reasoning, tool calling, and web search built in, GLM 5.2 is best suited to agentic workflows, long-context retrieval and analysis, and multilingual tasks where capable reasoning at a lower cost than frontier closed models matters.