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Z.ai: GLM 5.1

z-ai-glm-5.1z-aiClosed Source Model$2.050000 / call

Z.ai: GLM 5.1

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About Z.Ai: GLM 5.1

GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on...

Technical Specifications

Model ID
z-ai-glm-5.1
Category
LLM Models
Task
Text Generation
Price
$2.050000 per million tokens
Added
April 7, 2026

Key Features

  • Chat completion and multi-turn conversation API
  • Streaming response with token-by-token output
  • Function calling and tool use support
  • System prompts and role-based messaging
  • JSON mode and structured output

Quick Start

Integrate Z.Ai: GLM 5.1 into your application with a single API call. Get your API key from the pricing page to get started.

import requests
import json


url = "https://modelslab.com/api/v7/llm/chat/completions"


headers = {
    "Content-Type": "application/json"
}


data = {
        "model_id": "z-ai-glm-5.1",
        "messages": [
            {
                "role": "user",
                "content": "Hello!"
            }
        ],
        "max_tokens": 1000,
        "key": "YOUR_API_KEY"
    }


try:
    response = requests.post(url, headers=headers, json=data)
    response.raise_for_status()  # Raises an HTTPError for bad responses (4XX or 5XX)
    result = response.json()
    print("API Response:")
    print(json.dumps(result, indent=2))
except requests.exceptions.HTTPError as http_err:
    print(f"HTTP error occurred: {http_err} - {response.text}")
except Exception as err:
    print(f"Other error occurred: {err}")

View the full API documentation for SDKs, code examples in Python, JavaScript, and more.

Pricing

Z.Ai: GLM 5.1 API costs $2.050000 per million tokens. Pay only for what you use with no minimum commitments. View pricing plans

Use Cases

  • AI chatbots and virtual assistants
  • Code generation and developer tools
  • Content writing and copywriting automation
  • Data analysis, summarization, and extraction
Learn more about Z.Ai: GLM 5.1Browse LLM ModelsMore from Z AiView Pricing

Z.Ai: GLM 5.1 FAQ

GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on...

You can integrate Z.Ai: GLM 5.1 into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "z-ai-glm-5.1" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation.

Z.Ai: GLM 5.1 costs $2.050000 per million tokens. ModelsLab uses pay-per-use pricing with no minimum commitments. A free tier is available to get started.

The model ID for Z.Ai: GLM 5.1 is "z-ai-glm-5.1". Use this ID in your API requests to specify this model.

Yes, ModelsLab offers a free tier that lets you try Z.Ai: GLM 5.1 and other AI models. Sign up to get free API credits and start building immediately.