OpenAI rolls out advanced AI cyber model to challenge Anthropic’s Mythos

GPT-5.5-Cyber scales up the latest model released by OpenAI two weeks ago and will only be available initially to vetted ...
Mint

OpenAI launches a less restricted GPT-5.4 Cyber model, but you won't find it on ChatGPT

OpenAI has launched its GPT-5.4 Cyber model, which is a specialised version of its GPT-5.4 model built especially for defensive cybersecurity tasks. The new model announcement by OpenAI comes just ...

Anthropic says its most powerful AI cyber model is too dangerous to release publicly — so it built Project Glasswing

Anthropic launched Project Glasswing, a $100 million AI cybersecurity initiative using its unreleased Claude Mythos Preview model to find and patch zero-day vulnerabilities across critical ...
The Next Web

OpenAI opens its cybersecurity model to thousands of defenders in race with Anthropic’s Mythos

In short: OpenAI is releasing GPT-5.4-Cyber, a model fine-tuned for defensive cybersecurity with lowered refusal boundaries and binary reverse engineering capabilities, and scaling its Trusted Access ...