Frontier AI can now autonomously chain complex, expert-level cyber attacks end-to-end, at superhuman speed and near-zero…
Rohan Paul Twitter · Rohan Paul (@rohanpaul_ai) · 2026-04-30
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Topics: ai-cybersecurityfrontier-modelsautonomous-cyber-attacksgpt-5-5mythos-preview
Claims
- Frontier AI models can now autonomously chain complex, expert-level cyber attacks end-to-end at superhuman speed.
- Autonomous AI-driven cyber attacks are achievable at near-zero marginal cost.
- GPT-5.5 and Anthropic's Mythos Preview are statistically tied on cyber attack benchmarks, both far ahead of GPT-4o and Claude Opus 4.x.
Key quotes
Frontier AI can now autonomously chain complex, expert-level cyber attacks end-to-end, at superhuman speed and near-zero marginal cost.
GPT-5.5 essentially tied with Mythos Preview - within the margin of error — both far ahead of earlier models (GPT-4o, Claude Opus 4.x, etc.).