You need to select a model before the AI Summarizer Persona works

nathank · July 20, 2025, 10:53pm

Our summarization stopped working a while back. After some playing with it, I eventually got it working today.

The problem was this setting in the AI Summarizer Persona:

The setting implies that it is optional. However, I needed to add a model into it or I got this error in the logs:

If this isn’t optional, then it shouldn’t be marked as such!!!

sam · July 20, 2025, 10:58pm

It is sort of optional, a bit tricky…

Keegan is working on this:

github.com/discourse/discourse-ai

FEATURE: configure a default LLM model for all features

main ← default-llm-model

opened 10:31PM - 09 Jul 25 UTC

keegangeorge

+726 -392

## :mag: Overview This update adds a setting to the configure a default LLM mod…el to be used for all features (unless overridden) and removes the `custom:` prefix when defining LLM models ## ➕ More information For all features, the feature's assigned AI Persona's `default_llm_id` will be used, however, if it doesn't exist, the `SiteSetting.ai_default_llm_model` will be used instead. This update also adds a few migrations which migrates the old model settings for Helper and Summarization into their respective personas. That is: - `SiteSetting.ai_helper_model`'s existing value on sites will be copied into: ```ruby AiPersona.where(id: [-18, -19, -20, -21, -22, -23, -24, -25, -26]).default_llm_id ``` - `SiteSetting.ai_summarization_model`'s existing value on sites will be copied into ```ruby AiPersona.where(id: [-11, -12]).default_llm_id ``` Eventually, we will follow-up in a separate commit to remove the following settings: ```ruby SiteSetting.ai_helper_model SiteSetting.ai_helper_image_caption_model SiteSetting.ai_summarization_model SiteSetting.ai_embeddings_semantic_search_hyde_model ``` By default `SiteSetting.ai_default_llm_model` will have `default: ""` in it's `yaml` file, however, this update also adds a migration which will ensure that the last created LLM model is used to fill the setting. ## :camera_flash: Screenshots <img width="1091" alt="Screenshot 2025-07-09 at 15 27 57" src="https://github.com/user-attachments/assets/7ae3ab95-1adb-480e-894f-aa07655a26ea" /> <img width="1100" alt="Screenshot 2025-07-09 at 15 27 44" src="https://github.com/user-attachments/assets/3dde4222-48a2-49c4-b193-00dec50d9c02" />

Once it is done, people will generally have a default LLM set, so the odds of this being an issue will be way lower.

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You need to select a model before the AI Summarizer Persona works

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