OpenAI GPT-5 System Card

OpenAI · July 18, 2026 00:05 UTC vs July 21, 2026 00:07 UTC
Old version
July 18, 2026 00:05 UTC
b36905e4f0e5a2fa3e06f8ea62c7eab680a40642bbea8b22fd6371951afb6c07
CA-V-005015
New version
July 21, 2026 00:07 UTC
c28f4e81e3500ea472fe55624fb41b44851d714722b6a1734413dcd9c90d9ac1
CA-V-005107
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Change Summary
OpenAI updated the related-content section in its GPT-5 System Card detected on July 21, 2026. The previous version linked to an article titled 'OpenAI Bio Bug Bounty' from July 9, 2026 as one of three featured safety articles. The updated version replaced that article with 'Safety and alignment in an era of long-horizon models' from July 20, 2026. This changes which safety research and discussion OpenAI surfaces as contextually relevant to its biological-harm risk assessment.
low severity
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12While we do not have definitive evidence that this model could meaningfully help a novice to create severe biological harm—our defined threshold ⁠ (opens in a new window) for High capability—we have chosen to take a precautionary approach. 2025 System Cards Author OpenAI Keep reading View all Why teens deserve access to safe AI Safety Jul 16, 2026 GPT-Red: Unlocking Self-Improvement for Robustness Safety Jul 15, 2026 OpenAI Bio Bug Bounty Safety Jul 9, 202612While we do not have definitive evidence that this model could meaningfully help a novice to create severe biological harm—our defined threshold ⁠ (opens in a new window) for High capability—we have chosen to take a precautionary approach. 2025 System Cards Author OpenAI Keep reading View all Safety and alignment in an era of long-horizon models Safety Jul 20, 2026 Why teens deserve access to safe AI Safety Jul 16, 2026 GPT-Red: Unlocking Self-Improvement for Robustness Safety Jul 15, 2026

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