---
type: "Evidence Item"
title: "GPT-5.1 Instant and GPT-5.1 Thinking System Card Addendum"
description: "This GPT-5 system card addendum provides updated safety metrics for GPT-5.1 Instant and Thinking, including new evaluations for mental health and emotional reliance."
resource: "https://openai.com/index/gpt-5-system-card-addendum-gpt-5-1"
tags: ["appendix-iii", "vendor", "openai"]
timestamp: "2025-11-12"
category: "vendor"
publisher: "OpenAI"
cope_score: 48
confidence: 0.9
---

# GPT-5.1 Instant and GPT-5.1 Thinking System Card Addendum

# Claim

This GPT-5 system card addendum provides updated safety metrics for GPT-5.1 Instant and Thinking, including new evaluations for mental health and emotional reliance.

# Relevance

Appendix III, section two: vendor threshold and platform capability evidence

# Oracle Verdict

This is a low-signal vendor radar item. Keep it as context only unless a later benchmark, deployment, procurement change, or labour-market datapoint turns it into direct Appendix III evidence.

# Metadata

* Publisher: OpenAI
* Category: vendor
* Sector: Healthcare and life sciences
* Capability: Frontier model release and benchmark movement
* Cope score: 48
* Confidence: 0.9

# Related Concepts

* [Live evidence index](index.md)
* [Thesis](../thesis.md)

# Citations

[1] [GPT-5.1 Instant and GPT-5.1 Thinking System Card Addendum](https://openai.com/index/gpt-5-system-card-addendum-gpt-5-1)