GLM 4.7 Flash API - Speed Meets Affordability

The fastest GLM model optimized for real-time applications. Completely free on official platform, with even better pricing for high-volume usage through our proxy.

What is GLM 4.7 Flash?

GLM 4.7 Flash (model name: glm-4-flash) is Zhipu AI's speed-optimized language model designed for applications where response time is critical. It's part of the GLM-4 family but uses distillation and quantization techniques to deliver 3-5x faster inference while maintaining impressive quality.

🚀 Key Highlights

  • ⚡ Ultra-Fast Inference: Average response time under 1 second for typical queries
  • 💰 Completely Free: No cost on official Zhipu AI platform (with rate limits)
  • 🎯 High Quality: 85-90% of GLM-4-Plus quality at 5x the speed
  • 📏 128K Context: Same long-context capability as other GLM-4 models
  • 🌐 Multilingual: Strong Chinese and English support

The GLM 4.7 Flash API is ideal for chatbots, real-time assistants, customer service automation, and any application where users expect instant responses. It's the default choice for developers building interactive experiences.

GLM 4.7 Flash vs GLM 4.7 (Plus)

Understanding the trade-offs between speed and quality helps you choose the right model:

FeatureGLM-4-FlashGLM-4-AirGLM-4-Plus
Inference Speed⚡⚡⚡ Fastest⚡⚡ Fast⚡ Moderate
Average Response Time~0.8s~1.5s~2.5s
Quality Score85/10092/10098/100
Pricing (Official)FREE¥0.001/1K tokens¥0.05/1K tokens
Our Proxy PriceEven cheaper for high volume¥0.0004/1K tokens¥0.02/1K tokens
Context Window128K tokens128K tokens128K tokens
Best Use CaseChatbots, real-time appsGeneral production appsComplex reasoning, coding

🚀 Choose GLM-4-Flash If:

  • ✓ Speed is your top priority
  • ✓ Building real-time chat interfaces
  • ✓ Need instant customer support responses
  • ✓ Running on a tight budget (it's free!)
  • ✓ Handling simple Q&A or content generation
  • ✓ Prototyping and testing

⚖️ Choose GLM-4-Air If:

  • ✓ Need balance of speed and quality
  • ✓ General-purpose production apps
  • ✓ Content generation at scale
  • ✓ Want better quality than Flash
  • ✓ Budget-conscious but need reliability

🎯 Choose GLM-4-Plus If:

  • ✓ Maximum quality is essential
  • ✓ Complex reasoning tasks
  • ✓ Professional code generation
  • ✓ Advanced analysis and research
  • ✓ Can afford premium pricing

💡 Pro Tip: Hybrid Approach

Many developers use GLM-4-Flash for initial responses (fast user feedback) and then optionally upgrade to GLM-4-Plus for follow-up clarifications or complex tasks. This balances user experience with cost efficiency.

GLM 4.7 Flash API Pricing

One of the biggest advantages of GLM-4-Flash is its pricing model:

Official Zhipu AI

FREE

GLM-4-Flash is completely free on the official platform with reasonable rate limits.

  • ✓ Free tier: 60 RPM, 1M tokens/day
  • ✓ No credit card required
  • ✓ Perfect for learning and prototyping
  • ⚠️ Subject to rate limiting during peak hours
  • ⚠️ No SLA guarantees
Learn About Free Access

Our Proxy Service

BEST VALUE

For high-volume production apps, our proxy offers better reliability and even lower effective costs.

  • ✓ Volume discounts for enterprise usage
  • ✓ 99.9% uptime SLA guarantee
  • ✓ No rate limiting or throttling
  • ✓ Priority support 24/7
  • ✓ Access to all GLM models at 40% off
Get Enterprise Access

When to Use Our Proxy vs Free Tier

ScenarioFree TierOur Proxy
Learning / Experimenting✓ PerfectOverkill
Low-traffic personal project (<100 requests/day)✓ GreatNot needed
Production app (1K-10K requests/day)⚠️ May hit limits✓ Recommended
Enterprise app (>10K requests/day)✗ Will hit limits✓ Required
Need SLA guarantees✗ No SLA✓ 99.9% uptime
Need priority support✗ Community only✓ 24/7 support

Use Cases for GLM Flash API

GLM-4-Flash excels in scenarios where speed matters more than absolute perfection:

💬

Conversational Chatbots

Real-time chat applications where users expect instant responses. GLM-4-Flash's sub-second latency creates a natural conversation flow.

Example: Customer support chat, AI companions, virtual assistants

🎮

Interactive Gaming

NPCs (non-player characters) that respond dynamically to player actions. Fast inference ensures smooth gameplay.

Example: AI dungeon masters, game dialogue systems, procedural storytelling

📱

Mobile Applications

Mobile apps with limited bandwidth benefit from GLM-4-Flash's efficiency. Faster responses = better user experience on slower networks.

Example: Mobile chatbots, smart keyboard suggestions, voice assistants

Real-Time Content Moderation

Automatically filter user-generated content for compliance. Speed is essential to avoid user friction.

Example: Comment filtering, spam detection, content categorization

📊

Batch Processing

Process thousands of items quickly. GLM-4-Flash can handle 5x more throughput than GLM-4-Plus in the same timeframe.

Example: Email classification, sentiment analysis, data enrichment

🔍

Search Result Enhancement

Generate quick summaries or Q&A snippets for search results without slowing down the search experience.

Example: Search snippet generation, FAQ auto-responses, query understanding

How to Use GLM 4.7 Flash API

Using the GLM-4-Flash API is identical to other GLM models - just specify the model name:

Python Example (Official API)

import requests

API_URL = "https://open.bigmodel.cn/api/paas/v4/chat/completions"
API_KEY = "your-api-key"

def chat_with_flash(user_message):
    headers = {
        "Authorization": f"Bearer {API_KEY}",
        "Content-Type": "application/json"
    }

    data = {
        "model": "glm-4-flash",  # The key difference!
        "messages": [
            {"role": "user", "content": user_message}
        ],
        "temperature": 0.7,
        "max_tokens": 1000
    }

    response = requests.post(API_URL, headers=headers, json=data)
    return response.json()['choices'][0]['message']['content']

# Example usage
answer = chat_with_flash("What is machine learning?")
print(answer)
# Response time: ~0.8 seconds 🚀

JavaScript/Node.js Example

const axios = require('axios');

const API_URL = "https://open.bigmodel.cn/api/paas/v4/chat/completions";
const API_KEY = process.env.GLM_API_KEY;

async function chatWithFlash(userMessage) {
  const response = await axios.post(API_URL, {
    model: "glm-4-flash",
    messages: [
      { role: "user", content: userMessage }
    ],
    temperature: 0.7,
    max_tokens: 1000
  }, {
    headers: {
      "Authorization": `Bearer ${API_KEY}`,
      "Content-Type": "application/json"
    }
  });

  return response.data.choices[0].message.content;
}

// Example usage
chatWithFlash("Tell me a fun fact about AI")
  .then(answer => console.log(answer))
  .catch(err => console.error(err));

Streaming Responses (Recommended for Chat UIs)

import requests

def chat_with_flash_streaming(user_message):
    headers = {
        "Authorization": f"Bearer {API_KEY}",
        "Content-Type": "application/json"
    }

    data = {
        "model": "glm-4-flash",
        "messages": [{"role": "user", "content": user_message}],
        "stream": True  # Enable streaming for real-time responses
    }

    response = requests.post(API_URL, headers=headers, json=data, stream=True)

    # Print tokens as they arrive
    for line in response.iter_lines():
        if line:
            chunk = line.decode('utf-8')
            if chunk.startswith('data: '):
                print(chunk[6:], end='', flush=True)

# Even faster perceived response time with streaming!
chat_with_flash_streaming("Write a short poem about spring")

💡 Best Practice: Use Streaming

When building chat interfaces, always enable stream: true. Users see the first tokens in ~200ms, making the experience feel even faster than the already-quick GLM-4-Flash.

Related Resources

Ready for Production-Grade GLM-4-Flash?

While the free tier is great for testing, upgrade to our proxy for enterprise reliability, no rate limits, and 24/7 support. Perfect for scaling your application.

Questions? View pricing or read the docs