# GLM-5.3 Flash

> The fast, low cost GLM-5.3. Paid on Z.ai, unlike the older free Flash models.

- Maker: Z.ai (Zhipu) (https://docs.z.ai)
- Type: Reasoning, open weights
- Artificial Analysis Intelligence Index: 28
- Context window: 1M
- Output speed: 71 tokens a second
- Scores checked 30 October 2026 at https://artificialanalysis.ai/leaderboards/models (listed there as "GLM-5.3-Flash")

## Where to use it through an API

- Z.ai: model id `glm-5.3-flash`, paid

## Use it with every other AI at once

MultiScreenAI (https://www.multiscreenai.com) puts GLM-5.3 Flash on one screen next to ChatGPT, Claude, Gemini and 300+ models: one message goes to every panel, and a timed, blind test mode shows which answers best. Pro is free with a follow on X, and you use your own API keys.
AI agents and coding harnesses (Claude Code, Codex, Cursor, Gemini CLI) can ask GLM-5.3 Flash and other models at once through the MCP server at https://www.multiscreenai.com/api/mcp/ai; setup: https://www.multiscreenai.com/mcp