GLM-4.5

Z.ai (formerly Zhipu) released GLM-4.5 on July 28, 2025 as its first open-source Mixture-of-Experts model, with the flagship at 355 billion total parameters and a streamlined GLM-4.5-Air at 106 billion. The series natively integrates reasoning, coding, and agentic capabilities in a single model, and on the average score across 12 representative benchmarks it ranked third globally and first among domestic and open-source models. API pricing is set as low as USD 0.11 per million input tokens and USD 0.28 per million output tokens, with a high-speed version exceeding 100 tokens per second. Z.ai describes GLM-4.5 as its first foundation model with native Agent capabilities built into the core architecture, enabling autonomous multi-step planning, complex data visualization, and end-to-end workflow management for agent applications.

Zhipu, one of China's government-backed "AI tigers," released GLM-4.5 as an open-source model on July 28, 2025, according to Reuters. The release targets intelligent agent applications and adds to a growing pipeline of Chinese large-language models, with China having released 1,509 LLMs as of July, first globally among 3,755 models tracked. The launch follows OpenAI's June note of Zhipu's progress securing government contracts across several regions. Reporting by Liam Mo and Brenda Goh confirms the Beijing-based startup positioned GLM-4.5 as a direct entry in China's open-source agent-model race against domestic rivals. The Reuters piece frames the release within intensifying competition among Chinese AI firms but does not disclose parameter counts, benchmark scores, or API pricing details for GLM-4.5.