Model index
Z.ai·GLM

GLM-4.5

A 355B-total, 32B-active hybrid-reasoning MoE unifying reasoning, coding, and agent capabilities.

LegacyLanguageReasoningCodingAgentOpen weights
MODEL NUMBER038
First public date
2025-07-28
Organization
Z.ai
Family
GLM
01

Specifications

Only published specifications are shown.

Total parameters
355B
Active parameters
32B
Architecture
MoE
Context
128,000 tokens↗
Maximum output
98,304 tokens↗
Input modalities
Text
Open weights
Yes
License
MIT
Status
Legacy
02

Overview

Release dates

— GLM-4.5 and GLM-4.5-Air launched with open weights. ↗

Why it mattered

GLM-4.5 made the “native agent model” an explicit family direction while releasing both base and chat weights.

03

Specifications alongside predecessor

Compared with GLM-4 ↗

PreviousGLM-4— · — ctx
CurrentGLM-4.5355B · 128K ctx
04

Architecture & capabilities

Model capabilities

Hybrid reasoningCodingTool useAgent
05

Release history

Open weights

GLM-4.5 and GLM-4.5-Air launched with open weights.

View source
06

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07

Sources

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