GLM 5.2

GLM 5.2 is Zhipu AI's (Z.ai) flagship agentic coding model, the most capable entry in the GLM-5 family. It pairs a very large 262,144-token context window with native reasoning and robust multi-turn function calling, making it well-suited for autonomous coding agents that plan changes across many files, call tools to read and edit code, run tests, and iterate — all while keeping the full project context in a single window.

The model is tuned for agentic coding workflows: it follows tool-calling instructions precisely, emits reliable structured output for tool payloads, and uses a `reasoning_effort` thinking toggle (low/medium/high) to trade latency for depth on harder problems. Its bilingual Chinese/English heritage from the GLM family carries through, so it remains strong on multilingual technical content.

On CallMissed, GLM 5.2 is fully OpenAI-compatible on `/v1/chat/completions` with streaming, tool calling, and the reasoning toggle. The 262K context handles large repositories, long design documents, and extended agent transcripts in one pass — pair it with a planner/executor loop for repository-scale refactors, or use it directly for complex single-shot coding and analysis tasks.