# Free GLM-4 Flash API Endpoints & Rate Limits

> 1 provider · 3 free models · Last updated: 29 Oct 2026

## Quick Answer

3 free GLM-4 Flash API models across 1 provider including Z.AI. Verified rate limits, context windows, and OpenAI-compatible endpoints. Last updated: 29 Oct 2026.

Z.AI provides GLM-4.7-Flash and GLM-4.5-Flash completely free with up to 203K context, fast inference speeds, and an OpenAI-compatible base URL.

## Quick Connect

OpenAI-compatible endpoint for free GLM-4.7-Flash inference.

- **Base URL:** `https://open.bigmodel.cn/api/paas/v4/`
- **Model:** `GLM-4.7-Flash`
- **Provider:** [Z.AI (Zhipu)](/providers/z-ai--zhipu/)

```python
from openai import OpenAI

client = OpenAI(
    base_url="https://open.bigmodel.cn/api/paas/v4/",
    api_key="your-api-key",  # from Z.AI (Zhipu)
)

response = client.chat.completions.create(
    model="GLM-4.7-Flash",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)
```

## Rate Limits & Model Inventory

| Model | Provider | Cost | Context | RPM | TPM | RPD | Day tokens | Verified |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| GLM-4.5-Flash | [Z.AI (Zhipu)](/providers/z-ai--zhipu/) | $0 | Up to 203K | 3 (burst) | Not published | 1,000 | Not published | 2026-10-29 |
| GLM-4.7-Flash | [Z.AI (Zhipu)](/providers/z-ai--zhipu/) | $0 | Up to 203K | 3 (burst) | Not published | 1,000 | Not published | 2026-10-29 |
| GLM-4.6V-Flash (vision) | [Z.AI (Zhipu)](/providers/z-ai--zhipu/) | $0 | Up to 203K | 3 (burst) | Not published | 1,000 | Not published | 2026-10-29 |

Web page: https://freeinference.dev/free-glm-4-flash-api/
Machine-readable JSON: /data/providers.json
Agent summary: /llms.txt

Numbers cross-checked against official docs and live probes as of 2026-10-29. Limits change without notice — this is a map, not a contract.