LLM Reference
OpenRouter

Using GLM-5.3 on OpenRouter

Implementation guide · GLM-5 · Zhipu AI

Serverless

OpenRouter exposes GLM-5.3 through model ID z-ai/glm-5.3. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-08-24. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at OpenRouter and generate an API key.
  2. 2
    Use the OpenRouter SDK or REST API to call z-ai/glm-5.3 — see the documentation for request format.
  3. 3
    You'll be billed $1.40/1M input, $4.40/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See OpenRouter documentation for integration details.

Pricing on OpenRouter

TypePrice (per 1M)
Input tokens$1.40
Output tokens$4.40

Capabilities

ReasoningJSON / Tool useStructured OutputsPrompt Caching

About GLM-5.3

GLM-5.3 is Z.ai's August 2026 coding-first post-training release on the same GLM-5.2 base model, focused on complex software engineering, long-horizon agentic coding, and emergent cybersecurity evaluation. It is available through the GLM Coding Plan and Z.ai API; open weights are scheduled after safety hardening. Official API model ID: glm-5.3.

Full model details →

Model Specs

Released2026-08-14
Context1m

More Models on OpenRouter

GLM-5GLM-5.1GLM-5V-TurboGLM-5 TurboGLM-5.2GLM-5.3-Flash
All models on OpenRouter →

Also available on(1)

Z.ai$1.40/1M
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Provider

OpenRouter
OpenRouter

OpenRouter, Inc.

New York, NY, USA