OpenAI's GPT-5.5 System Card was detected as updated on August 19, 2026. The change modified the featured content links in the document's header section, replacing three dated articles (published August 10, August 1, and July 29, 2026) with two newer articles published August 18, 2026, including new content on 'Pacing model development in an era of cyber-critical capabilities' and 'Introducing ChatGPT for Teens'. The System Card itself, which documents safeguards for GPT-5.5 and GPT-5.5 Pro deployment, remains substantively unchanged; only the curated links to related resources were updated.
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This card was updated on April 24, 2026, to include additional information about safeguards for the deployment of GPT‑5.5 and GPT‑5.5 Pro in the API. 2026 System Cards Author OpenAI Keep reading View all Expanding Daybreak as the Cyber Defense Window Narrows Security Aug 10, 2026 Ten advances in mathematics and theoretical computer science Publication Aug 1, 2026 How enabling two settings tripled our scores on the ARC-AGI-3 benchmark Research Jul 29, 2026
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This card was updated on April 24, 2026, to include additional information about safeguards for the deployment of GPT‑5.5 and GPT‑5.5 Pro in the API. 2026 System Cards Author OpenAI Keep reading View all Pacing model development in an era of cyber-critical capabilities Company Aug 18, 2026 Introducing ChatGPT for Teens Product Aug 18, 2026 Expanding Daybreak as the Cyber Defense Window Narrows Security Aug 10, 2026
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