🔥BREAKING: OpenAI rolls out GPT-5.4-Cyber to limited group for testing, seeks to rival Claude Mythos

reddit-openai · www.reddit.com ·91 pts·45 replies ↗ ·2d

OpenAI has officially announced GPT-5.4-Cyber today as part of an expanded Trusted Access for Cyber Defense program. OpenAI describes it as a version of GPT-5.4 that is tuned for legitimate cybersecurity work, with a lower refusal boundary…

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