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Zhipu AI

GLM-4.5 API

Zhipu AI
About

Build advanced reasoning agents with GLM-4.5, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.60/1M input and $2.20/1M output tokens, native tool calling support, open weights architecture. Access GLM-4.5 via the Zhipu AI API with up to 98K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsOpen
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
131K

Tokens

Input Limit
131K

Tokens

Max Output
98K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.60
Output
$2.20

Caching (per 1M tokens)

Read
$0.11
Write
Free
Frequently Asked Questions

GLM-4.5 by Zhipu AI costs $0.60 per 1M input tokens and $2.20 per 1M output tokens. Cached reads cost $0.11 per 1M tokens. Cache writes cost Free per 1M tokens.

Model Details
ID
glm-4.5
Provider
Zhipu AI
Family
glm
Release Date
Jul 28, 2025
Knowledge Cutoff
Apr 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
ZHIPU_API_KEY
API Base URL
https://open.bigmodel.cn/api/paas/v4
Documentation