Guide

Zhipu GLM API for International Developers (GLM-5.1 & GLM-4 Flash)

April 16, 2026 · 5 min read

Zhipu AI's GLM models are among China's most capable AI systems. GLM-5.1 achieves coding SOTA, and GLM-4 Flash is one of the cheapest capable models in the world at $0.01 per million tokens. But accessing them internationally has been difficult.

GLM Models Available via AIPower

ModelInput $/MOutput $/MContextBest For
GLM-5.1$1.20$3.84128KCoding SOTA, complex tasks
GLM-4 Flash$0.01$0.01128KTesting, prototyping, high volume

Why GLM-4 Flash Is a Game Changer

At $0.01 per million tokens (both input and output), GLM-4 Flash is essentially free. This makes it perfect for:

  • Development & testing — run thousands of test queries for pennies
  • High-volume classification — categorize millions of items cheaply
  • Chat applications — serve end-users at near-zero marginal cost
  • Data extraction — process large datasets without worrying about cost

Quick Start

from openai import OpenAI
client = OpenAI(base_url="https://api.aipower.me/v1", api_key="YOUR_KEY")

# GLM-4 Flash — nearly FREE
r = client.chat.completions.create(
    model="zhipu/glm-4-flash",
    messages=[{"role": "user", "content": "Classify this text: ..."}],
)

# GLM-5.1 — coding SOTA
r = client.chat.completions.create(
    model="zhipu/glm-5.1",
    messages=[{"role": "user", "content": "Write a REST API in FastAPI"}],
)

Access both GLM models with 10 free API calls at aipower.me. No Chinese phone or bank account needed.

GET STARTED WITH AIPOWER

16 AI models. One API. OpenAI SDK compatible.

Who should use AIPower?

  • • Developers needing both Chinese and Western AI models
  • • Chinese teams that can't access OpenAI / Anthropic directly
  • • Startups wanting multi-model redundancy through one API
  • • Anyone tired of paying grey-market intermediary premiums

3 steps to first API call

  1. Sign up — email only, 10 free trial calls, no card
  2. Copy your API key from the dashboard
  3. Change base_url in your OpenAI SDK → done
from openai import OpenAI

client = OpenAI(
    base_url="https://api.aipower.me/v1",  # ← only change
    api_key="sk-your-aipower-key",
)

response = client.chat.completions.create(
    model="auto-cheap",   # or anthropic/claude-opus, deepseek/deepseek-chat, openai/gpt-5, etc.
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

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