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智谱 AI（GLM）API

智谱 AI（GLM）API

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Zhipu AI API provides GLM series LLMs — GLM-4 general-purpose, GLM-4V multimodal, CodeGeeX code, AutoGLM autonomous agents.

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Use it when

Tsinghua academic heritage (strong in academic scenarios)

Watch for

General LLM capability slightly weaker than Qwen-Max / GPT-4

First check

Sign up at bigmodel.cn for API key. POST https://open.bigmodel.cn/api/paas/v4/chat/completions with model: "glm-4" + messages.

Auth
api_key
CORS
?
HTTPS
Yes
Signup
?
Protocol
REST
Pricing
paid

Uptime · 30-day window

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01

About this API

Zhipu AI is an AI company incubated from Tsinghua University Computer Science KEG Lab, founded 2019. Early open-sourcing of ChatGLM-6B caused a sensation in the Chinese LLM open-source community, accelerating China's LLM open-source ecosystem. Commercialization via Open Platform (bigmodel.cn): GLM-4 (flagship), GLM-4V (multimodal), CodeGeeX (code generation), AutoGLM (GUI agent that auto-operates PC/mobile to execute tasks). Customers mainly academic institutions, government research departments, ToB enterprises. Together with Qwen / Moonshot Kimi / DeepSeek forms China's first-tier LLM, but current commercialization scale smaller than Alibaba Cloud's Qwen.

02

What you can build

  • 1Chinese LLM apps (especially academic / tech scenarios)
  • 2Multimodal visual understanding (GLM-4V)
  • 3AutoGLM automated PC / mobile operations
  • 4Code generation (CodeGeeX)
03

Strengths & limitations

Strengths

  • Tsinghua academic heritage (strong in academic scenarios)
  • Open-source ChatGLM series influence (60k+ GitHub stars)
  • AutoGLM is China's GUI agent pioneer
  • Cheap pricing (GLM-4 input ¥0.1/1000 tokens)

Limitations

  • General LLM capability slightly weaker than Qwen-Max / GPT-4
  • Ecosystem maturity less than OpenAI
04

Example request

Generic template — replace <endpoint> with the real path from the docs.
curl https://open.bigmodel.cn/<endpoint> \
  -H "Authorization: Bearer $API_KEY"
# Some providers use X-Api-Key instead — verify in the docs.
05

Getting started

Sign up at bigmodel.cn for API key. POST https://open.bigmodel.cn/api/paas/v4/chat/completions with model: "glm-4" + messages.

06

FAQ

What is AutoGLM?+

One of China's earliest GUI agents — lets LLM actually "operate" your browser/phone (click, type, navigate), auto-completing multi-step tasks like booking flights / looking up info.

07

Technical details

CORS: ?HTTPS: YesSignup: ?Open source: No
Auth type
api_key
Pricing
paid
Rate limit
默认 RPM 限制；申请提高
Protocols
REST
SDKs
python, javascript, java
08

Tags

glmzhipullmchina-aichatglm