# GLM 5.3 FlashX: AI model fact sheet

- **Provider:** zhipu
- **Released:** 2026-09-18
- **Context window:** 1,048,576 tokens
- **API pricing:** $0.37 / 1M input, $1.25 / 1M output
- **OpenRouter ID:** z-ai/glm-5.3-flashx
- **Capabilities:** conversation, reasoning, tool-use

Z.ai GLM 5.3 FlashX accepts text, image, and video inputs and produces text, with a 1M context window on OpenRouter.

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