OpenAI, creator of popular chatbot ChatGPT, said that GPT-5.4-Cyber will initially be rolled out on a limited basis to vetted security vendors.
OpenAI Unveils GPT-5.4-Cyber After Anthropic Debuts AI Model Mythos
OpenAI, creator of popular chatbot ChatGPT, said that GPT-5.4-Cyber will initially be rolled out on a limited basis to vetted security vendors.
Published: 15 April 2026
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