---
title: ServiceNow Otto for AI Search properties
description: System properties that you can use to modify behavior for ServiceNow Otto for AI Search Genius Results.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/platform-administration/ai-search/properties-now-assist-ais.html
release: australia
product: AI Search
classification: ai-search
topic_type: reference
last_updated: "2026-07-25"
reading_time_minutes: 4
keywords: [ServiceNow Otto, AI Agents, generative AI, agentic AI]
breadcrumb: [ServiceNow Otto for AI Search reference, ServiceNow Otto for AI Search, ServiceNow Store applications and integrations, AI Search, Search administration, Configure core features, Administer the ServiceNow AI Platform]
---

# ServiceNow Otto for AI Search properties

System properties that you can use to modify behavior for ServiceNow® Otto for AI Search Genius Results.

These properties are available for ServiceNow Otto for AI Search.

**Note:** To open the System Property \[sys\_properties\] table's list view, select **All**, enter `sys_properties.list` in the **Filter** field, and press **Enter**.

<table id="table_s4h_h2x_jdc"><thead><tr><th>

Property

</th><th>

Description

</th></tr></thead><tbody><tr><td>

sn\_ais\_assist.semantic\_cache\_mode

</td><td>

Operational mode for the Knowledge base articles Genius Results caches. Use this mode to control how AI Search uses the caches and the Now LLM Service when looking for Knowledge base articles Genius Result answers. For details about how AI Search caches Knowledge base articles Genius Result answers, see [Caching for Knowledge base articles Genius Results](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/platform-administration/ai-search/caching-now-assist-q-a-gr.md).

-   Type: string
-   Default value: off
-   Supported values:
    -   **off**: Use the first-level cache and the Now LLM Service to find Knowledge base articles Genius Result answers.

AI Search looks in the first-level cache for Knowledge base articles Genius Result answers that exactly match your search query and knowledge article result. If it doesn't find a matching answer, it sends your query and Knowledge article sys\_id to the Now LLM Service for answer generation.

Knowledge base articles Genius Result answers generated by the Now LLM Service populate the first-level cache.

When using Dynamic Translation, AI Search bypasses the caches and queries the Now LLM Service to generate an answer for the Knowledge base articles Genius Result.

    -   **offline**: Use the first-level and second-level caches to find Knowledge base articles Genius Result answers. Don't submit queries to the Now LLM Service.

AI Search looks in the first-level cache for Knowledge base articles Genius Result answers that exactly match your search query and knowledge article result. If it doesn't find a matching answer, it uses semantic vector search to look for answers that match the meaning of your query in the second-level cache. If no cached answers match your query and knowledge article result, AI Search returns no answer for the Knowledge base articles Genius Result.

Knowledge base articles Genius Result answers found in the second-level cache populate the first-level cache.

When using Dynamic Translation, AI Search bypasses the caches and returns no answer for the Knowledge base articles Genius Result.

    -   **online**: Use the first-level and second-level caches and the Now LLM Service to find Knowledge base articles Genius Result answers.

AI Search looks in the first-level cache for Knowledge base articles Genius Result answers that exactly match your search query and knowledge article result. If it doesn't find a matching answer, it uses semantic vector search to look for answers that match the meaning of your query in the second-level cache. If no cached answers match your query and knowledge article result, AI Search submits the query and article sys\_id to the Now LLM Service for answer generation.

Knowledge base articles Genius Result answers generated by the Now LLM Service populate the first-level and second-level caches.

When using Dynamic Translation, AI Search bypasses the caches and queries the Now LLM Service to generate an answer for the Knowledge base articles Genius Result.

-   Location: Not present in the System Property \[sys\_properties\] table by default. To override the default value, add this property by following the steps in [Add a system property](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/platform-administration/t_AddAPropertyUsingSysPropsList.md).

</td></tr><tr><td>

sn\_ais\_assist.u\_llm\_api\_timeout

</td><td>

Maximum time in seconds to wait for Knowledge base articles Genius Result answer generation results from the LLM.-   Type: integer
-   Default value: 120
-   Location: Not present in the System Property \[sys\_properties\] table by default. To override the default value, add this property by following the steps in [Add a system property](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/platform-administration/t_AddAPropertyUsingSysPropsList.md).

</td></tr><tr><td>

sn\_ais\_assist.u\_question\_regex

</td><td>

Case-insensitive Java regular expression pattern that defines searches eligible for Q&amp;A answer generation. As an example, the pattern `^(what|where|when|why|who|whom|which|how)\b` restricts eligibility to search queries that begin with one of the specified keywords. When this system property has a value defined, only searches in supported applications that match the specified pattern are eligible for Q&amp;A answer generation.

 When no value is defined, all searches in supported applications are eligible for Q&amp;A answer generation.

 -   Type: string
-   Default value: none
-   Location: System Property \[sys\_properties\] table

 To learn about Java regular expression pattern syntax, see [the Javadoc for the java.regex.util.Pattern class](https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/regex/Pattern.html).

</td></tr><tr><td>

sn\_ais\_assist.u\_sanitize\_html

</td><td>

Option to remove HTML tags from knowledge article text before sending to the LLM for Knowledge base articles Genius Result answer generation. -   Type: true \| false
-   Default value: false
-   Location: Not present in the System Property \[sys\_properties\] table by default. To override the default value, add this property by following the steps in [Add a system property](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/platform-administration/t_AddAPropertyUsingSysPropsList.md).

</td></tr></tbody>
</table>**Parent Topic:**[ServiceNow Otto for AI Search reference](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/platform-administration/ai-search/reference-now-assist-ais.md)