Update GPT 5 Chat footnote (#810)

Author: yiwei-w

docs/kagi/ai/llms-privacy.md

@@ -5,7 +5,7 @@ When you use [The Assistant](./assistant.md), we make API requests to third-part
 | Model                                                                                                                                                                                                                                                                             | Model Provider                                       | Trains on User Data via API | Data Retention for API             | Privacy Policy / FAQ                                                                                                                                                                                                                                                                                                                                                                                     |
 | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :--------------------------------------------------- | :-------------------------- | :--------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | <ul><li>Claude 3.5 Haiku</li><li>Claude 4 Sonnet</li><li>Claude 4 Sonnet with extended thinking</li><li>Claude 4.1 Opus</li><li>Claude 4.1 Opus with extended thinking</li></ul>     | <ul><li>Anthropic</li><li>Amazon Bedrock</li></ul>   | No                          | 30 days (flagged prompts: 2 years) | <ul><li>[Anthropic Privacy Policy](https://www.anthropic.com/legal/privacy)</li><li>[Anthropic FAQ](https://privacy.anthropic.com/en/articles/7996866-how-long-do-you-store-personal-data)</li><li>[Amazon Bedrock Privacy Policy](https://docs.aws.amazon.com/bedrock/latest/userguide/)</li><li>[Amazon Bedrock FAQ](https://docs.aws.amazon.com/nova/latest/userguide/responsible-use.html)</li></ul> |
-| <ul><li>ChatGPT</li><li>o4 mini</li><li>GPT 4.1</li><li>GPT 4o mini</li><li>GPT 4.1 mini</li><li>GPT 4.1 nano</li><li>GPT 5 chat</li><li>GPT 5 mini</li><li>GPT 5 nano</li></ul>                                                                                                                         | <ul><li>OpenAI¹</li><li>Microsoft Azure</li></ul>     | No                          | 30 days²                            | <ul><li>[OpenAI Privacy Policy](https://openai.com/enterprise-privacy/)</li><li>[Microsoft Azure Privacy Policy](https://learn.microsoft.com/en-us/azure/machine-learning/concept-data-privacy?view=azureml-api-2)</li></ul>                                                                                                                                                                             |
+| <ul><li>ChatGPT</li><li>o4 mini</li><li>GPT 4.1</li><li>GPT 4o mini</li><li>GPT 4.1 mini</li><li>GPT 4.1 nano</li><li>GPT 5 chat⁴</li><li>GPT 5 mini</li><li>GPT 5 nano</li></ul>                                                                                                                         | <ul><li>OpenAI¹</li><li>Microsoft Azure</li></ul>     | No                          | 30 days²                            | <ul><li>[OpenAI Privacy Policy](https://openai.com/enterprise-privacy/)</li><li>[Microsoft Azure Privacy Policy](https://learn.microsoft.com/en-us/azure/machine-learning/concept-data-privacy?view=azureml-api-2)</li></ul>                                                                                                                                                                             |
 | <ul><li>o3</li><li>o3 pro</li><li>GPT 5</li></ul>                                                                                                                         | <ul><li>OpenAI¹ ³</li></ul>     | No                          | 30 days                            | <ul><li>[OpenAI Privacy Policy](https://openai.com/enterprise-privacy/)</li></ul>                                                                                                                                                                             |
 | <ul><li>Mistral Pixtral</li><li>Mistral Large</li><li>Mistral Medium</li><li>Magistral Medium</li><li>Magistral Large</li></ul>                                                                                                                                                                               | <ul><li>Mistral AI</li><li>Microsoft Azure</li></ul> | No                          | 30 days                            | <ul><li>[Mistral AI Privacy Policy](https://mistral.ai/terms/)</li><li>[Microsoft Azure Privacy Policy](https://learn.microsoft.com/en-us/azure/machine-learning/concept-data-privacy?view=azureml-api-2)</li></ul>                                                                                                                                                                                      |
 | <ul><li>Mistral Small</li></ul>                                                                                                                                                                              | <ul><li>Nebius</li><li>Mistral AI</li></ul> | No                          | 30 days                            | <ul><li>Custom privacy agreement with Nebius</li><li>[Mistral AI Privacy Policy](https://mistral.ai/terms/)</li></ul>                                                                                                                                                                                      |
@@ -27,3 +27,5 @@ When you use [The Assistant](./assistant.md), we make API requests to third-part
 We are working with Microsoft to raise the Azure quota and minimize these fallbacks.
 
 ³ o3/o3-pro/GPT 5 models are not yet available to Kagi via Azure and go directly to OpenAI for now.
+
+⁴ GPT 5 chat is labeled as ChatGPT in the Assistant.