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What is GLM-5.3?

GLM-5.3 is Z.ai’s frontier coding model built to improve complex software engineering, long-horizon agent work, and advanced technical reasoning through scaled post-training. The model uses the same base model as GLM-5.2, with performance gains coming from additional post-training environments, more diverse tasks, and expanded compute on the existing training stack. Z.ai’s stack includes IndexShare for efficient long-context processing, SAO for reinforcement learning on long-horizon tasks, and slime for large-scale asynchronous post-training. GLM-5.3 is designed to perform better on work that resembles real engineering tasks rather than short coding exercises. Its training environments include production-style workflows where the model must diagnose bottlenecks, inspect documentation, use codebases, run experiments, implement changes, and produce measurable improvements. The model improves coding performance across public and private benchmarks, including Terminal Bench 3.0, DeepSWE, Agents’ Last Exam, and Z.ai Code Bench. GLM-5.3 also improves token efficiency, producing stronger agentic coding results than GLM-5.2 while using fewer output tokens in Z.ai’s internal evaluations. The model supports three reasoning effort levels, low, high, and max, and no longer supports disabling thinking. Z.ai recommends max reasoning effort for coding tasks, while applications using disabled thinking must migrate to enabled thinking before switching to GLM-5.3. The release also reports emergent cyber capabilities, including stronger vulnerability discovery and exploitation-chain reasoning, with open-weight release planned after safety evaluation and hardening. By combining scaled post-training, long-context infrastructure, long-horizon reinforcement learning, coding-agent workflows, benchmark improvements, reasoning controls, and ZCode integration, GLM-5.3 helps developers and researchers work on demanding coding and agentic tasks.

What is GLM-5-Turbo?

GLM-5-Turbo is a swift advancement of Z.ai’s GLM-5 model, designed to provide both efficient and stable performance for scenarios driven by agents, while also maintaining strong reasoning and programming capabilities. It is specifically optimized for high-throughput requirements, particularly in intricate long-chain agent tasks that involve a sequence of steps, tools, and decisions executed with precision and minimal delay. By supporting advanced agent-driven workflows, GLM-5-Turbo significantly improves multi-step planning, tool application, and task execution, yielding a higher level of responsiveness than larger flagship models in the collection. Retaining the foundational advantages of the GLM-5 series, this model excels in reasoning, coding, and managing extensive contexts, while emphasizing the optimization of crucial factors such as speed, efficiency, and stability for production environments. Additionally, it is designed to integrate seamlessly with agent frameworks like OpenClaw, enabling it to effectively coordinate actions, oversee inputs, and execute tasks proficiently. This adaptability ensures that users experience a dependable and responsive tool capable of meeting diverse operational challenges and requirements, ultimately enhancing productivity and effectiveness in various applications.

Media

Media

Integrations Supported

Claw Code
GLM Coding Plan
Java
Ollama
OpenClaw
Python
Z.ai
APIFree
Amp
C++
CSS
Cherry Studio
ClinePass
Grok Build
Together AI
Wafer
Yonoo
Zo Computer

Integrations Supported

Claw Code
GLM Coding Plan
Java
Ollama
OpenClaw
Python
Z.ai
GLM-5
GLM-5.1

API Availability

Has API

API Availability

Has API

Pricing Information

Free
Open source
Free Version

Pricing Information

Free
Free Version

Supported Platforms

SaaS
Windows
Mac
On-Prem
Linux

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

Z.ai

Date Founded

2023

Company Location

China

Company Website

z.ai/

Company Facts

Organization Name

Z.ai

Date Founded

2019

Company Location

China

Company Website

docs.z.ai/guides/llm/glm-5-turbo

Categories and Features

AI Coding Models

Not specified

AI Models

Not specified

AI Reasoning Models

Not specified

Foundation Models

Not specified

Large Language Models

Not specified

Categories and Features

AI Models

Not specified

Large Language Models

Not specified

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