GPT-5.5 Cyber: The Two-Tier AI Security World
OpenAI just shipped its second cyber-tuned AI in a month — and gated it behind a vetted-defender access tier, mirroring Anthropic's Claude Security release a week earlier. The cybersecurity AI race has split into two tiers, and the line between who gets the capability and who doesn't is the new strategic question.
The Promise
The Risk
Why this matters
OpenAI’s second cyber-tuned model in a month signals where the frontier labs think the cybersecurity AI market is going — and the access model matters as much as the capability. Like Anthropic’s Claude Security release a week earlier, GPT-5.5 Cyber is gated behind a vetted-defender tier rather than shipped to the open API.
This special episode covers what the two-tier split means for defenders, what it means for everyone outside that tier, and the strategic question buyers and CISOs now have to answer about which side of the line they sit on.