OpenAIAI
MediumCapability
GPT-5.5 System Card capability update
AI Impact Summary
GPT-5.5 introduces a new System Card capability; expect updated defaults for system prompts or behavioral constraints that steer generation. This can affect consistency and safety controls across applications relying on system instructions, so teams should run regression tests against critical prompts to detect shifts in output style, length, or policy adherence.
GPT-5.5 System Card capability update
Affected Systems
GPT-5.5 System Card
Business Impact
Changes to the System Card may alter response behavior under system prompts, requiring prompt revalidation and updated monitoring to prevent unexpected output in production.
Models affected
- Date
- Date not specified
- Change type
- capability
- Severity
- medium