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features
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Description

Claude Mythos Preview is a next-generation language model designed with exceptional capabilities in cybersecurity analysis and exploit development. It has demonstrated the ability to autonomously identify zero-day vulnerabilities in major operating systems, web browsers, and widely used software. The model can go beyond detection by constructing functional exploits, including remote code execution and privilege escalation chains. It uses agentic workflows to explore codebases, test vulnerabilities, and validate findings without human intervention. Mythos Preview can also reverse engineer closed-source binaries, reconstructing logic and identifying potential weaknesses. Compared to earlier models, it shows a dramatic improvement in exploit success rates and complexity handling. The model is capable of chaining multiple vulnerabilities together to bypass modern security defenses. It can assist both defenders and attackers, depending on how it is used, highlighting the dual-use nature of advanced AI systems. These capabilities have led to initiatives focused on strengthening cybersecurity defenses using the model. Overall, Claude Mythos Preview represents a major advancement in AI-driven security research and automation.

Description

GPT-5.4-Cyber is a tailored variant of GPT-5.4, specifically created to enhance defensive cybersecurity operations, which empowers security experts to more adeptly analyze, identify, and address vulnerabilities. This model has been fine-tuned to reduce the restrictions placed on legitimate security tasks, facilitating more in-depth involvement in areas such as vulnerability research, exploit analysis, and secure code assessments that are often limited in standard models. One of its standout features is the ability to perform binary reverse engineering, enabling the examination of compiled applications without needing the source code to uncover potential malware, vulnerabilities, and evaluate the overall strength of systems. Furthermore, it operates within OpenAI’s Trusted Access for Cyber (TAC) initiative, distributing its capabilities through a structured access framework that mandates identity verification and levels of trust, thereby ensuring that only approved defenders, researchers, and organizations are granted access to its most sophisticated functionalities. This approach not only enhances security measures but also fosters a more collaborative environment for cybersecurity professionals.

API Access

Has API Yes 

API Access

Has API No 

Screenshots View All

No images available

Screenshots View All

Integrations

Claude Code Yes 
Claude Cowork Yes 
Claude Desktop Yes 
Claude Dispatch Yes 
Claude Managed Agents Yes 
Claude Marketplace Yes 
Claude Max Yes 
Claude Pro Yes 
Claude Research Yes 
Claude for Healthcare Yes 
GPT-5.4 No 
GPT-5.5 No 
GPT-5.5 Pro No 
GPT-5.6 Luna No 
GPT-5.6 Sol No 
GPT-5.6 Sol Ultrafast No 
GPT-6 Luna No 
GPT-6 Sol No 
GPT-6.1 Sol No 
Holo4 No 

Integrations

Claude Code No 
Claude Cowork No 
Claude Desktop No 
Claude Dispatch No 
Claude Managed Agents No 
Claude Marketplace No 
Claude Max No 
Claude Pro No 
Claude Research No 
Claude for Healthcare No 
GPT-5.4 Yes 
GPT-5.5 Yes 
GPT-5.5 Pro Yes 
GPT-5.6 Luna Yes 
GPT-5.6 Sol Yes 
GPT-5.6 Sol Ultrafast Yes 
GPT-6 Luna Yes 
GPT-6 Sol Yes 
GPT-6.1 Sol Yes 
Holo4 Yes 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

Pricing Details

Free
Free Trial Yes 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) Yes 
In Person No 

Vendor Details

Company Name

Anthropic

Founded

2021

Country

United States

Website

claude.ai

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

openai.com/index/scaling-trusted-access-for-cyber-defense/

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