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TechRadar
TechRadar
Sead Fadilpašić

'Trusted access for the next era of cyber defense': OpenAI reveals its Mythos rival, designed for cybersecurity pros to spot the next level of attacks

OpenAI Mythos Cybersecurity
A laptop on a red and blue background showing ChatGPT running the GPT-4o model.
  • OpenAI launches GPT‑5.4‑Cyber, a cyber‑defense variant of GPT‑5.4
  • Model adds reverse engineering and lower refusal boundaries for defenders
  • Available via Trusted Access for Cyber program, scaled to thousands of verified users

The AI-powered cybersecurity race has reached a new level after OpenAI announced a new model to rival Anthropic Mythos.

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