deep search: mention AI Terms and remove outdated model identifier (#1576)

mention AI Terms and remove outdated model identifier

---------

Co-authored-by: Jan Hartman <janhartman@users.noreply.github.com>

Author: stefanhengl

docs/admin/config/site-config.mdx

@@ -269,7 +269,6 @@ All site configuration options and their default values are shown below.
 			"extsvc.gitlab": false
 		},
 		"deepSearch.enabled": false,
-		"deepSearch.model": "anthropic::2024-10-22::claude-sonnet-4-latest",
 		"deepSearch.sharing.enabled": false,
 		"enableGithubInternalRepoVisibility": false,
 		"enablePermissionsWebhooks": false,

docs/deep-search/index.mdx

@@ -6,8 +6,7 @@ seoPriority: 1.0
 
 <TierCallout>
 	Supported on [Enterprise Starter](/pricing/plans/enterprise-starter) and
-	[Enterprise](/pricing/plans/enterprise) plans. It's not supported for BYOK
-	users. Please reach out to your Sourcegraph account team to request access.
+	[Enterprise](/pricing/plans/enterprise) plans. For new customers, the [Enterprise AI Terms of Use](https://sourcegraph.com/terms/ai-terms) apply and Deep Search is enabled by default. For existing customers with licenses predating the AI terms, Deep Search can be enabled after signing the AI terms addendum - please contact your account team for assistance. Deep Search is not supported for BYOK customers.
 	<user>Available on the Web.</user>
 </TierCallout>
 
@@ -73,7 +72,7 @@ If Deep Search is disabled, ask your site administrator to enable the following
 },
 ```
 
-For optimal performance, Deep Search is specialized only to use one model (Claude Sonnet 4).
+Deep Search uses a combination of frontier and specialized models selected by Sourcegraph. We continuously evaluate and update these models to ensure optimal performance.
 
 ### Enabling conversation sharing