OpenAI, Anthropic Gate New AI Models: 91.5% Refusal [2026]

OpenAI and Anthropic are now restricting access to their most powerful AI models over cybersecurity concerns. OpenAI says its upcoming Astra model is the first to cross its highest cybersecurity capability threshold, having independently discovered two zero-day vulnerabilities in testing. Anthropic is limiting its Claude Mythos 5.1 to vetted institutions because of stronger cybersecurity and bioscience capabilities. Both companies say the models will initially be available only to small, approved groups rather than the general public.

Why it matters

This update explains the technology development and its practical significance for the market.

What happens next

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Watch the video: YouTube

Source: tech-insider.org


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