As OpenAI advances a cyber-focused model, GPT-5.5-Cyber, rivaling Anthropic's "Mythos," the Trump White House has refrained from the kind of intervention it imposed on Anthropic, exposing an asymmetry in regulatory treatment.
June 23, 2026 · Frontier AI & Cyber Policy
Same Power, Different Treatment: The Cyber-AI Double Standard
OpenAI's GPT-5.5-Cyber reached vetted defenders across multiple countries — yet Washington blocked Anthropic from widening access to its comparably capable Claude Mythos, raising questions of an informal AI licensing regime.
GPT-5.5-Cyber
85.6%
CyberGym attack-simulation score
Claude Mythos 5
83.8%
CyberGym attack-simulation score
Both Models
2×+
High-severity flaws found vs legacy tools
CyberGym Benchmark — Nearly Identical Capability
Both frontier models cluster within two points — yet only one faced a government access block.
85.6%
GPT-5.5-CyberOpenAI
83.8%
Claude Mythos 5Anthropic
Greenlit · OpenAI
Rolled out via "Trusted Access for Cyber" program
Reached vetted defenders across multiple countries incl. Australia & Canada
No regulatory pushback — Pentagon ties cited
Restricted · Anthropic
Available only to ~50 critical-infrastructure orgs via Project Glasswing
White House opposed expanding access — first de facto US AI model restriction
Prior "red line" disputes raised scrutiny
Comparable frontier cyber tools, divergent fates — a possible informal government licensing regime.
Defenders gain
Faster vulnerability discovery and remediation at scale.
Misuse risk
Guardrailed defense-only versions; neither model is publicly available.
Open question
Can the spread of such capabilities realistically be contained?
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