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A powerful reasoning model optimized for complex coding, autonomous AI agents, software engineering, and long-running workflows. Supports a 1M-token context window and up to 128K output tokens.

GLM 5.3 Flash is well suited to coding agents, repository-scale debugging, tool-using workflows and visual tasks such as understanding screenshots, charts and documents. Use it when an agent needs to work across a large codebase or long research context, call tools, inspect visual inputs and continue through multi-step tasks without switching models. Z.ai positions the model particularly around coding, multimodal understanding and agentic work.

GLM 5.2 is designed for long-horizon software engineering and agent workflows where the model must stay coherent across a large amount of project context. It is a strong fit for multi-file refactoring, complex debugging, large-scale implementation, automated research, performance optimization and coding tasks that may continue for many agent steps.