GLM 4.7 Flash

• 🆕 Speed-optimized variant of GLM-4.7, released January 2026.
• 🧠 30B-A3B mixture-of-experts with roughly 3B active parameters.
• 📏 Roughly 128K-token context window for long inputs.
• 🔧 Supports function calling and web search.
• ⚡ Optimized for fast, low-latency inference.
• 🔒 Open weights under the permissive MIT license.
• 📚 Targets lightweight, cost-efficient deployment in the 30B class.
• 🌐 Runs on common inference stacks like vLLM and SGLang.

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 4.7 Flash is Z.ai's speed-optimized, lightweight member of the GLM-4.7 generation, released in early 2026 alongside the full-size GLM 4.7. According to its Hugging Face model card, it is a 30B-A3B mixture-of-experts model—30 billion total parameters with roughly 3 billion active per token—positioned for strong balance of performance and efficiency in the 30B class. It ships as open weights under the MIT license and runs on common inference stacks such as vLLM and SGLang.

Compared with the full GLM 4.7, the Flash variant is built for faster, cheaper inference by activating fewer parameters per token, while retaining the generation's coding focus, function calling, and web-search support. The catalog lists a 128K-token context window and reasoning capability.

The wider GLM-4.7 line advanced over GLM 4.6; Z.ai's GLM-4.7 model card reports the full model reaching 42.8% on Humanity's Last Exam, a gain over GLM-4.6, with improved tool use.

This makes Flash well suited to high-volume, latency-sensitive tasks, with the full GLM 4.7 available for harder jobs.