Rate-limited free · API key · code · Last updated: 29 Oct 2026
4 free models on Z.AI (Zhipu) including GLM-5.1, GLM-4.5-Flash, and GLM-4.7-Flash. OpenAI-compatible endpoint (https://open.bigmodel.cn/api/paas/v4/), up to 203K context. Last updated: 29 Oct 2026.
Free-tier limits revised twice in the past year - verify. Peak-hour throttling. Flash models are free regardless of tier. OpenAI-compatible.
Source: https://z.ai · Last updated: 29 Oct 2026
| Model | Cost | Context | RPM | TPM | RPD | Day tokens | Verified |
|---|---|---|---|---|---|---|---|
| GLM-5.1 | $0 | Up to 203K | 3 (burst) | Not published | 1,000 (1K RPD tier) | Not published | 2026-10-29 |
| GLM-4.5-Flash | $0 | Up to 203K | 3 (burst) | Not published | 1,000 | Not published | 2026-10-29 |
| GLM-4.7-Flash | $0 | Up to 203K | 3 (burst) | Not published | 1,000 | Not published | 2026-10-29 |
| GLM-4.6V-Flash (vision) | $0 | Up to 203K | 3 (burst) | Not published | 1,000 | Not published | 2026-10-29 |
Machine-readable: /data/z-ai--zhipu.json · Markdown