GLM 5.2: the top Frontend Coding model in the world, IndexShare reduces costs
Z.ai releases GLM-5.2, a 744B-parameter mixture-of-experts open-weight model with a 1M-token context window targeting coding and agentic tasks, ranking first on Design Arena and Agent Arena.
Z.ai released GLM-5.2, an MIT-licensed open-weight frontier model targeting coding and long-horizon agentic tasks with a 1M-token context window and two reasoning-effort modes. It features a 744B-parameter mixture-of-experts architecture with 40B active parameters per token, built on DeepSeek Sparse Attention extended by IndexShare, and supports improved multi-token prediction (MTP) for speculative decoding. The model achieved strong leaderboard placements, including #3 on FrontierSWE, #1 on Design Arena, and #1 open model on Agent Arena, with ecosystem support from platforms like Transformers, vLLM, SGLang, Cloudflare Workers AI, OpenRouter, Ollama Cloud, Baseten, DeepInfra, Fireworks, and Notion.
Early testers praised its potential as a substitute for Opus/GPT-class workflows, though some called for further evaluation and long-horizon validation.