GLM-5.3

GLM-5.3

Z.ai
+
+

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About

GLM-5.3 is Z.ai’s frontier coding model designed for complex software engineering, long-horizon agent tasks, and advanced post-training research. The model uses the same base model as GLM-5.2, with improvements coming from scaled post-training across more environments, more diverse tasks, and larger compute investment. GLM-5.3 delivers stronger coding performance, better task ownership, improved benchmark results, and greater efficiency across realistic development workflows. It is built to handle complex coding tasks, production-style engineering work, research environments, automation tasks, and agentic workflows that require multi-step execution. The model also shows emergent cyber capabilities in vulnerability discovery and exploitation-chain reasoning, with safety evaluation and hardening planned before open-weight release.

About

GPT-6 Cyber is an advanced AI cybersecurity model developed by OpenAI to help security researchers discover, validate, and remediate software vulnerabilities. The model specializes in autonomous vulnerability research, exploit development, secure code analysis, and authorized penetration testing across complex software environments. Its reasoning capabilities allow security teams to investigate large codebases, identify previously unknown vulnerabilities, reproduce security flaws, and develop candidate patches. GPT-6 Cyber achieved a 48.5% success rate on ExploitGym, representing a 51% relative improvement over GPT-5.6 Cyber. The model includes specialized alignment training and safeguards designed to respect authorized testing boundaries, prevent unauthorized actions, and accurately report research findings. GPT-6 Cyber is initially available through OpenAI's Daybreak Red program using the API and Codex for approved cybersecurity organizations and researchers.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Software engineers, coding agent builders, AI researchers, ML infrastructure teams, security researchers, developer tool teams, automation teams, technical leaders, and organizations that need frontier coding models, long-horizon reasoning, production-style software engineering, benchmark-driven model evaluation, reinforcement learning research, coding-agent integrations, reasoning effort controls, ZCode workflows, and advanced technical task automation

Audience

Cybersecurity researchers, penetration testers, ethical hackers, red teams, vulnerability researchers, application security engineers, security operations teams, software security auditors, incident response professionals, open-source maintainers, critical infrastructure security specialists, and organizations seeking AI-powered vulnerability discovery, authorized exploit development, security testing, secure code review, and automated vulnerability remediation

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Open source
Free Version Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • The thing I like most is that GLM-5.3 feels aimed at serious engineering work, not casual prompting. It is built around coding agents, long-running software tasks, debugging, and the kind of multi-step execution that actually matters when you are working inside real repos. The post-training jump is also interesting. Z.ai is not just talking about a bigger model; it is pushing the idea that better training on agentic coding and cyber workflows can make the model more useful in practice.

Cons

  • The cybersecurity angle is impressive, but it is also where I would be most cautious. Strong vulnerability discovery and cyber reasoning can be useful for defense, audits, and secure engineering, but I would want very clear controls around how it is used.

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Z.ai
Founded: 2023
China
z.ai/

Company Information

OpenAI
Founded: 2015
United States
openai.com

Alternatives

Alternatives

GPT-6.1 Sol

GPT-6.1 Sol

OpenAI
GPT-6.1 Sol

GPT-6.1 Sol

OpenAI
GLM-5

GLM-5

Z.ai
GLM-5.1

GLM-5.1

Z.ai

Categories

Categories

AI Coding Models Supported
AI Models Supported
AI Vision Models Supported
Foundation Models Supported
Multimodal Models Supported

Integrations

Amp Supported
Augment Code Supported
C# Supported
C++ Supported
CSS Supported
Claw Code Supported
Cursor Supported
Dessix Supported
Go Supported
HTML Supported
JavaScript Supported
JetBrains Junie Supported
OpenClaw Supported
OpenRouter Supported
Python Supported
R Supported
Rust Supported
SQL Supported
Vercel AI Gateway Supported
Yonoo Supported

Integrations

Amp Supported
Augment Code Supported
C# Supported
C++ Supported
CSS Supported
Claw Code Supported
Cursor Supported
Dessix Supported
Go Supported
HTML Supported
JavaScript Supported
JetBrains Junie Supported
OpenClaw Supported
OpenRouter Supported
Python Supported
R Supported
Rust Supported
SQL Supported
Vercel AI Gateway Supported
Yonoo Supported
Claim GLM-5.3 and update features and information
Claim GLM-5.3 and update features and information
Claim GPT‑6 Cyber and update features and information
Claim GPT‑6 Cyber and update features and information