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After dissing Anthropic for limiting Mythos, OpenAI restricts access to Cyber

techcrunch.com

May 1, 2026

1 min read

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44/100

Summary

OpenAI will restrict access to its cybersecurity tool, Cyber, rolling it out initially to "critical cyber defenders." Interested users must submit their credentials and intended use through an application on OpenAI's website to gain access.

Key Takeaways

OpenAI will begin rolling out its cybersecurity tool, GPT-5.5 Cyber, to "critical cyber defenders" in the coming days.
Cyber is designed for tasks such as penetration testing, vulnerability identification, and malware reverse engineering.
OpenAI is consulting with the U.S. government to expand access to Cyber for users with legitimate cybersecurity credentials.
Sam Altman criticized Anthropic's restricted access to its tool Mythos, labeling it as fear-based marketing, while OpenAI is implementing a similar access limitation for Cyber.

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Community Sentiment

Negative

Positives

The models from these companies demonstrate impressive vulnerability research capabilities, highlighting their potential in cybersecurity applications.

Concerns

The ongoing competition between companies seems driven more by hype than genuine advancements, raising concerns about the integrity of their claims.
High operational costs and limited access to models like Cyber suggest a troubling trend towards exclusivity and commercialization over public benefit.
The skepticism surrounding leadership statements indicates a growing distrust in the narrative presented by AI companies, which could impact user confidence.