OpenAI has launched GPT-5.5-Cyber, an advanced cybersecurity program designed to identify and help fix vulnerabilities in open-source software. This new version is reportedly capable of reproducing more bugs than its predecessors, Mythos and Patch the Planet. Additionally, OpenAI's GPT-5.5 Instant model has shown improved performance on health-related queries, now matching the capabilities of their top-tier Thinking models. AI
IMPACT Enhances cybersecurity efforts by improving bug reproduction and fixing capabilities in open-source software.
RANK_REASON Frontier-lab model release with system card. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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