[9.1] Rename ELSER defaults (#225852) (#226453)

# Backport

This will backport the following commits from `main` to `9.1`:
- [Rename ELSER defaults
(#225852)](#225852)

<!--- Backport version: 9.6.6 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Tim
Grein","email":"[email protected]"},"sourceCommit":{"committedDate":"2025-07-03T15:21:56Z","message":"Rename
ELSER defaults
(#225852)","sha":"6501ac0e5327dd546e7d00cac6c19f2099a55e77","branchLabelMapping":{"^v9.2.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","backport:prev-major","Team:Obs
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ELSER
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ELSER defaults
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BACKPORT-->

Co-authored-by: Tim Grein <[email protected]>

Author: kibanamachine

x-pack/platform/plugins/shared/observability_ai_assistant/common/preconfigured_inference_ids.ts

@@ -8,7 +8,7 @@
 export const LEGACY_CUSTOM_INFERENCE_ID = 'obs_ai_assistant_kb_inference';
 
 export const ELSER_ON_ML_NODE_INFERENCE_ID = '.elser-2-elasticsearch';
-export const ELSER_IN_EIS_INFERENCE_ID = '.elser-v2-elastic';
+export const ELSER_IN_EIS_INFERENCE_ID = '.elser-2-elastic';
 
 export const E5_SMALL_INFERENCE_ID = '.multilingual-e5-small-elasticsearch';
 export const E5_LARGE_IN_EIS_INFERENCE_ID = '.multilingual-e5-large-elastic'; // TODO: verify the inference ID once it's created in EIS

x-pack/solutions/search/plugins/search_inference_endpoints/public/components/all_inference_endpoints/tabular_page.test.tsx

@@ -89,19 +89,19 @@ const inferenceEndpoints = [
     },
   },
   {
-    inference_id: '.elser-v2-elastic',
+    inference_id: '.elser-2-elastic',
     task_type: 'sparse_embedding',
     service: 'elastic',
     service_settings: {
-      model_id: 'elser-v2',
+      model_id: 'elser_model_2',
     },
   },
   {
     inference_id: 'custom-inference-id',
     task_type: 'sparse_embedding',
     service: 'elastic',
     service_settings: {
-      model_id: 'elser-v2',
+      model_id: 'elser_model_2',
     },
   },
 ] as InferenceAPIConfigResponse[];
@@ -117,8 +117,8 @@ describe('When the tabular page is loaded', () => {
     render(<TabularPage inferenceEndpoints={inferenceEndpoints} />);
 
     const rows = screen.getAllByRole('row');
-    expect(rows[1]).toHaveTextContent('.elser-2-elasticsearch');
-    expect(rows[2]).toHaveTextContent('.elser-v2-elastic');
+    expect(rows[1]).toHaveTextContent('.elser-2-elastic');
+    expect(rows[2]).toHaveTextContent('.elser-2-elasticsearch');
     expect(rows[3]).toHaveTextContent('.multilingual-e5-small-elasticsearch');
     expect(rows[4]).toHaveTextContent('.sparkles');
     expect(rows[5]).toHaveTextContent('custom-inference-id');
@@ -132,11 +132,11 @@ describe('When the tabular page is loaded', () => {
     render(<TabularPage inferenceEndpoints={inferenceEndpoints} />);
 
     const rows = screen.getAllByRole('row');
-    expect(rows[1]).toHaveTextContent('Elasticsearch');
-    expect(rows[1]).toHaveTextContent('.elser_model_2');
+    expect(rows[1]).toHaveTextContent('Elastic');
+    expect(rows[1]).toHaveTextContent('.elser-2-elastic');
 
-    expect(rows[2]).toHaveTextContent('Elastic');
-    expect(rows[2]).toHaveTextContent('.elser-v2-elastic');
+    expect(rows[2]).toHaveTextContent('Elasticsearch');
+    expect(rows[2]).toHaveTextContent('.elser_model_2');
 
     expect(rows[3]).toHaveTextContent('Elasticsearch');
     expect(rows[3]).toHaveTextContent('.multilingual-e5-small');
@@ -145,7 +145,7 @@ describe('When the tabular page is loaded', () => {
     expect(rows[4]).toHaveTextContent('rainbow-sprinkles');
 
     expect(rows[5]).toHaveTextContent('Elastic');
-    expect(rows[5]).toHaveTextContent('elser-v2');
+    expect(rows[5]).toHaveTextContent('elser_model_2');
 
     expect(rows[6]).toHaveTextContent('Elasticsearch');
     expect(rows[6]).toHaveTextContent('.rerank-v1');
@@ -201,14 +201,14 @@ describe('When the tabular page is loaded', () => {
     expect(rows[9]).not.toHaveTextContent(preconfigured);
   });
 
-  it('should show tech preview badge only for reranker-v1 model, rainbow-sprinkles, and preconfigured elser-v2', () => {
+  it('should show tech preview badge only for reranker-v1 model, rainbow-sprinkles, and preconfigured elser_model_2', () => {
     render(<TabularPage inferenceEndpoints={inferenceEndpoints} />);
 
     const techPreview = 'TECH PREVIEW';
 
     const rows = screen.getAllByRole('row');
-    expect(rows[1]).not.toHaveTextContent(techPreview);
-    expect(rows[2]).toHaveTextContent(techPreview);
+    expect(rows[1]).toHaveTextContent(techPreview);
+    expect(rows[2]).not.toHaveTextContent(techPreview);
     expect(rows[3]).not.toHaveTextContent(techPreview);
     expect(rows[4]).toHaveTextContent(techPreview);
     expect(rows[5]).not.toHaveTextContent(techPreview);

x-pack/solutions/search/plugins/search_inference_endpoints/public/utils/reranker_helper.ts

@@ -23,12 +23,12 @@ export const isProviderTechPreview = (provider: InferenceInferenceEndpointInfo)
 
   /*
     For rerank task type, model ID starting with '.' indicates tech preview
-    Special case for 'rainbow-sprinkles' model
+    Special case for 'rainbow-sprinkles' model and ELSER on EIS
   */
   if (
     (taskType === 'rerank' && modelId.startsWith('.')) ||
     modelId === 'rainbow-sprinkles' ||
-    (modelId === 'elser-v2' &&
+    (modelId === 'elser_model_2' &&
       inferenceId.startsWith('.') &&
       service === ServiceProviderKeys.elastic)
   ) {