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Jun 25, 2026 · Artificial Intelligence
OpenAI’s GPT‑5.5‑Cyber Detects, Patches Vulnerabilities, Beats Anthropic Mythos 5
OpenAI unveiled GPT‑5.5‑Cyber as part of its Daybreak security initiative, delivering a full‑capability model that outperforms Anthropic’s Mythos 5 on multiple security benchmarks and can autonomously discover, verify, and patch software vulnerabilities while launching the open‑source “Patch the Planet” program.
AI securityAnthropicGPT-5.5-Cyber
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