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
| Model | Input $/M | Output $/M | Context | Best For |
|---|---|---|---|---|
| GLM-5.1 | $1.20 | $3.84 | 128K | Coding SOTA, complex tasks |
| GLM-4 Flash | $0.01 | $0.01 | 128K | Testing, 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 50 free API calls at aipower.me. No Chinese phone or bank account needed.