BigModel

BigModel

active

Zhipu AI's open platform featuring GLM series models — permanently free API, available in China, OpenAI-compatible.

https://open.bigmodel.cn/api/paas/v4

Avg Latency

90-day Uptime

%

Rate Limits

30 RPM / — RPD

Sign-up Required

Yes

Info

Base URL https://open.bigmodel.cn/api/paas/v4
Sign-up Required Yes
Credit Card Not required
Context Window 200K
Last Verified 2026-03-29
china-availableopenai-compatiblevisionthinkingfunction-call

Models (4)

glm-4.7-flash

CTX: 200K · 30 RPM

active

glm-4-flash-250414

CTX: 128K · 30 RPM

active

glm-4v-flash

CTX: 8K · 30 RPM

active

glm-4.1v-thinking-flash

CTX: 32K · 30 RPM

active

Quick Start

bash
export API_KEY="your_api_key_here"
curl https://open.bigmodel.cn/api/paas/v4/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $API_KEY" \
  -d '{
    "model": "glm-4.7-flash",
    "messages": [
      {"role": "user", "content": "Hello! How are you?"}
    ]
  }'