GLM 4.5 is Z.ai's full-scale model released July 28, 2025, unifying reasoning, coding, and agentic capabilities in a single endpoint. Available through AI Gateway with built-in observability and intelligent provider routing.
import { streamText } from 'ai'
const result = streamText({ model: 'zai/glm-4.5', prompt: 'Why is the sky blue?'})GLM 4.5 was released July 28, 2025 as Z.ai's full-scale large language model designed to unify reasoning, coding, and agentic capabilities. It represents the full-scale offering in the GLM-4.5 generation, targeting workloads where broad competence across analytical and generative tasks matters more than narrow specialization.
The model supports configurable thinking, letting you enable or disable chain-of-thought reasoning depending on the task. This flexibility is useful in agentic pipelines where some steps benefit from deliberation and others need fast, direct responses. GLM 4.5 operates within a context window of 131.1K tokens, handling long documents, extended conversations, and multi-file code analysis in a single pass.
Z.ai positions GLM 4.5 alongside other widely used closed-source models. For teams evaluating alternatives across providers, it offers a distinct cost-performance point. Through AI Gateway, you access GLM 4.5 with a unified API, automatic retries, and provider routing without managing separate accounts.