Overview

Provider Type

API

API Endpoint


                                                        https://api.z.ai/api/paas/v4

Free Tier Highlights

~1 request/second (Flash models)

Quick Start Guide

1

Create Account

Sign up at z.ai/chat with your email.

2

Get API Key

Open your profile menu, select API Keys, and create a new key.

3

Configure

Use the OpenAI SDK with base_url='https://api.z.ai/api/paas/v4' and model glm-4.5-flash or glm-4.7-flash.

Available Models

Model Name	ID	Context	Capabilities
GLM-4.5-Flash Free	`glm-4.5-flash`	128 000	-
GLM-4.7-Flash Free	`glm-4.7-flash`	128 000	-

Integration Examples

Ready-to-use code snippets for your applications.

Select a Model

Select Model

main.py

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_ZAI_KEY",
    base_url="https://api.z.ai/api/paas/v4"
)

response = client.chat.completions.create(
    model="glm-4.5-flash",
    messages=[
        {"role": "user", "content": "What makes the GLM Flash tier fast?"}
    ]
)

print(response.choices[0].message.content)

index.js

import OpenAI from 'openai';

const client = new OpenAI({
  apiKey: 'YOUR_ZAI_KEY',
  baseURL: 'https://api.z.ai/api/paas/v4'
});

const response = await client.chat.completions.create({
  model: 'glm-4.5-flash',
  messages: [
    { role: 'user', content: 'What makes the GLM Flash tier fast?' }
  ]
});

console.log(response.choices[0].message.content);

terminal

curl https://api.z.ai/api/paas/v4/chat/completions \
  -H "Authorization: Bearer YOUR_ZAI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-4.5-flash",
    "messages": [
      {
        "role": "user",
        "content": "What makes the GLM Flash tier fast?"
      }
    ]
  }'

example.php

<?php
$apiKey = 'YOUR_API_KEY';
$url = "https://api.z.ai/api/paas/v4/models/glm-4.5-flash:generateContent?key=$apiKey";

$data = [
    "contents" => [
        ["parts" => [["text" => "Explain quantum mechanics"]]]
    ]
];

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);

$response = curl_exec($ch);
curl_close($ch);

echo $response;
?>

main.go

package main

import (
    "context"
    "fmt"
    "log"
    "github.com/google/generative-ai-go/genai"
    "google.golang.org/api/option"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, option.WithAPIKey("YOUR_API_KEY"))
    if err != nil { log.Fatal(err) }
    defer client.Close()

    model := client.GenerativeModel("glm-4.5-flash")
    resp, err := model.GenerateContent(ctx, genai.Text("Explain quantum mechanics"))
    if err != nil { log.Fatal(err) }
    
    // ...
}

main.py

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_ZAI_KEY",
    base_url="https://api.z.ai/api/paas/v4"
)

response = client.chat.completions.create(
    model="glm-4.7-flash",
    messages=[
        {"role": "user", "content": "What makes the GLM Flash tier fast?"}
    ]
)

print(response.choices[0].message.content)

index.js

import OpenAI from 'openai';

const client = new OpenAI({
  apiKey: 'YOUR_ZAI_KEY',
  baseURL: 'https://api.z.ai/api/paas/v4'
});

const response = await client.chat.completions.create({
  model: 'glm-4.7-flash',
  messages: [
    { role: 'user', content: 'What makes the GLM Flash tier fast?' }
  ]
});

console.log(response.choices[0].message.content);

terminal

curl https://api.z.ai/api/paas/v4/chat/completions \
  -H "Authorization: Bearer YOUR_ZAI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-4.7-flash",
    "messages": [
      {
        "role": "user",
        "content": "What makes the GLM Flash tier fast?"
      }
    ]
  }'

example.php

<?php
$apiKey = 'YOUR_API_KEY';
$url = "https://api.z.ai/api/paas/v4/models/glm-4.7-flash:generateContent?key=$apiKey";

$data = [
    "contents" => [
        ["parts" => [["text" => "Explain quantum mechanics"]]]
    ]
];

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);

$response = curl_exec($ch);
curl_close($ch);

echo $response;
?>

main.go

package main

import (
    "context"
    "fmt"
    "log"
    "github.com/google/generative-ai-go/genai"
    "google.golang.org/api/option"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, option.WithAPIKey("YOUR_API_KEY"))
    if err != nil { log.Fatal(err) }
    defer client.Close()

    model := client.GenerativeModel("glm-4.7-flash")
    resp, err := model.GenerateContent(ctx, genai.Text("Explain quantum mechanics"))
    if err != nil { log.Fatal(err) }
    
    // ...
}

Free Tier Pricing & Limits

Rate Limit

Requests per minute

~1 request/second (Flash models)

Daily Quota

Requests per day

~1000 requests/day (Flash tier)

Token Limit

Tokens per minute

Varies by model

Monthly Quota

Per month limit

Free tier ongoingsubject to change

Use Cases

Low-Cost Coding Assistants

Lightweight Chat Agents

High-Volume Prototyping

Limitations & Considerations

Free Flash tier capped near 1 request/second

Flagship GLM-5.2 model requires a paid plan

Free-tier limits have changed more than once in the past year — verify on docs.z.ai

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Z.AI (GLM)

Overview

Provider Type

API Endpoint

Free Tier Highlights

Why Choose Z.AI (GLM)?

Quick Start Guide

Create Account

Get API Key

Configure

Available Models

Integration Examples

Select Model

Free Tier Pricing & Limits

Rate Limit

Daily Quota

Token Limit

Monthly Quota

Use Cases

Limitations & Considerations

Community Hub

Quick Reactions

Add Discussion

Recent Activity

Ready to Get Started?

Cookie Consent

Z.AI (GLM)

Overview

Provider Type

API Endpoint

Free Tier Highlights

Why Choose Z.AI (GLM)?

Quick Start Guide

Create Account

Get API Key

Configure

Available Models

Integration Examples

Select Model

Free Tier Pricing & Limits

Rate Limit

Daily Quota

Token Limit

Monthly Quota

Use Cases

Limitations & Considerations

Community Hub

Quick Reactions

Add Discussion

Recent Activity

Suggest an Edit

Report an Issue

Ready to Get Started?