Use Private OpenAI API Key

If users decide to use OpenAI as the LLM model but prefer to use their own API key, the following configurations are required.

1. Select Specify Private API Key.
2. Select OpenAI as Model Provider.
3. Authentication. Input user’s private API key.
4. Default LLM Model Setting. This setting applies to all features by default. Please note that changing the embedding model will delete all existing embedded data, which will then need to be re-embedded. Users can manually enter the models.
   

   LLM Model	Default Value
   LLM General Model	gpt-4o-mini-2024-07-18
   LLM Reasoning Model	gpt-5-mini-2025-08-07
   LLM Pro Model	gpt-5.2-2025-12-11
   Embedding Model	text-embedding-3-large

    

Note:  Please ensure the Web API Server can access the URL https://api.openai.com.