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.

Topic		Replies	Views
AI helper model site setting is hidden now but still in use Bug ai	2	23	July 16, 2025
Summarise feature Support ai , ai-summarize	5	68	November 5, 2024
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You need to select a model before the AI Summarizer Persona works

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