GPT-5.5 Instant Safety Report
·2026.05.05 19:00
Key point
OpenAI classified GPT-5.5 Instant as the first High capability model in the Instant lineup and strengthened its safeguards.
Details
GPT-5.5 Instant is OpenAI's latest Instant model. It maintains a safety response approach similar to previous Instant-series models, but for the first time, it has been treated as High capability in the Cybersecurity and Biological & Chemical Preparedness categories, applying additional safeguards.
The naming is organized as follows.
- This model is also denoted as
gpt-5.5-instant. - GPT-5.4 Instant does not exist.
- The comparison baseline is GPT-5.3 Instant.
- To avoid confusion, GPT-5.5 is called GPT-5.5 Thinking.
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