OpenAI Releases GPT-5.5-Cyber to Trusted Defenders
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- OpenAI will launch GPT-5.5-Cyber to a select group of trusted “critical cyber defenders” within days, per CEO Sam Altman’s X post.
- Sam Altman said OpenAI will work with “the entire ecosystem and the government” to define trusted access for the new model.
- Anthropic released Claude Mythos under a “trusted access” scheme, mirroring OpenAI’s limited rollout strategy.
- White House officials, reported by the Wall Street Journal, opposed expanding Mythos access, citing cybersecurity risks and limited capacity for government use.
- Wall Street Journal noted the White House’s pushback after Anthropic’s recent tensions with the Pentagon.
Why it matters: Critical cyber defenders gain early access to GPT-5.5-Cyber in the next few days, while rivals and the government lose broader AI tools; the limited rollout concentrates defensive capabilities in vetted hands, altering threat response dynamics.
