# GLM 5.3: AI model fact sheet

- **Provider:** zhipu
- **Released:** 2026-08-18
- **Context window:** 1,310,720 tokens
- **API pricing:** $0.65 / 1M input, $2.05 / 1M output
- **OpenRouter ID:** z-ai/glm-5.3
- **Capabilities:** conversation, reasoning, code-generation, tool-use

Z.ai reasoning model for complex software engineering and long-horizon agent tasks. Supports text input and output with a 1,310,720-token context window on OpenRouter.

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/glm-5.3