glm-5.3 · Z.AI
GLM-5.3 is Z.AI’s coding and agentic reasoning model, built for complex software engineering, long-running agent tasks, vulnerability analysis, and other demanding workloads. Building on GLM-5.2, it incorporates further post-training improvements to deliver stronger coding performance, better task execution, and greater token efficiency. We currently offer the production-ready GLM-5.3 API with unlimited concurrency, making it well suited for high-throughput workloads, coding agents, and large-scale automation. For a limited time, GLM-5.3 is available at 10% off.
10% off
GLM-5.3 is Z.AI’s coding and agentic reasoning model, built for complex software engineering, long-running agent tasks, vulnerability analysis, and other demanding workloads. Building on GLM-5.2, it incorporates further post-training improvements to deliver stronger coding performance, better task execution, and greater token efficiency. We currently offer the production-ready GLM-5.3 API with unlimited concurrency, making it well suited for high-throughput workloads, coding agents, and large-scale automation. For a limited time, GLM-5.3 is available at 10% off.
GLM 5.3 has a 1,048,576 token context window. It supports up to 131,072 output tokens.
On AIHubMix, GLM 5.3 costs $1.014 per million input tokens and $3.549 per million output tokens. Cached input reads are billed at $0.254 per million tokens. These are current promotional rates — list price is $1.127 input and $3.944 output per million tokens.
GLM 5.3 accepts text input.
GLM 5.3 supports thinking, tool calling, function calling and structured outputs. Per-protocol parameter support is listed in the capability table on this page.
GLM 5.3 is available through the AIHubMix unified API. The API is OpenAI-compatible: point your OpenAI SDK at https://aihubmix.com/v1, use your AIHubMix API key, and set the model name to glm-5.3 — no other code changes needed.
GLM 5.3 is developed by Z.AI. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
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Use GLM 5.3 via the AIHubMix unified API — one interface for every major LLM.