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What is GPT-5.5-Cyber?

OpenAI's GPT-5.5 with Trusted Access for Cyber adopts an identity and trust-centric methodology, ensuring that cutting-edge cyber capabilities are employed responsibly. This enhanced model is tailored to support verified defenders involved in authorized defensive operations while implementing restrictions to mitigate risks of real-world harm. For many teams, this version of GPT-5.5 is recognized as OpenAI's most powerful offering for authentic defensive uses, boasting advanced protections for critical tasks such as secure code review, vulnerability assessment and triage, malware analysis, binary reverse engineering, detection engineering, and patch validation. Authorized defenders experience a decrease in classifier-based refusals when performing permitted cybersecurity activities, all while the system retains protective barriers against malicious actions like credential theft, stealth tactics, persistence, malware deployment, and exploitation of external systems. As a result, this model not only boosts the operational effectiveness of cybersecurity experts but also emphasizes the safety and stability of the broader cyber landscape. Additionally, the careful balance of providing advanced tools while maintaining stringent security protocols fosters a more resilient environment for digital defense.

What is Claude Mythos?

Claude Mythos Preview is a cutting-edge AI model that represents a significant breakthrough in cybersecurity capabilities and autonomous reasoning. It has shown the ability to independently discover and exploit zero-day vulnerabilities in a wide range of systems, including operating systems, browsers, and critical infrastructure software. The model can generate sophisticated exploit chains, combining multiple vulnerabilities to achieve outcomes such as remote code execution or full system control. It operates using agentic workflows, where it analyzes source code, tests hypotheses, and iteratively refines its findings without human guidance. Mythos Preview is also highly capable in reverse engineering, allowing it to analyze closed-source binaries and uncover hidden vulnerabilities. Compared to previous models, it demonstrates a substantial increase in both accuracy and success rate when developing real-world exploits. It can identify subtle and long-standing bugs that have gone unnoticed for years. The model is also effective at converting known vulnerabilities into working exploits rapidly, reducing the time between disclosure and potential attack. These capabilities highlight both the opportunities and risks associated with advanced AI in cybersecurity. As a result, efforts like Project Glasswing aim to use the model to strengthen global defenses. The model’s emergence signals a shift toward automated, large-scale vulnerability research. Overall, Claude Mythos Preview marks a transformative step in how AI can impact both offensive and defensive cybersecurity.

Media

Media

No images available

Integrations Supported

Claude
Claude Code
Claude Cowork
Claude Desktop
Claude Dispatch
Claude Managed Agents
Claude Marketplace
Claude Max
Claude Pro
Claude Research
Claude for Healthcare
GPT-5.5
OpenAI
OpenAI Daybreak

Integrations Supported

Claude
Claude Code
Claude Cowork
Claude Desktop
Claude Dispatch
Claude Managed Agents
Claude Marketplace
Claude Max
Claude Pro
Claude Research
Claude for Healthcare
GPT-5.5
OpenAI
OpenAI Daybreak

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com/index/gpt-5-5-with-trusted-access-for-cyber/

Company Facts

Organization Name

Anthropic

Date Founded

2021

Company Location

United States

Company Website

claude.ai

Categories and Features

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