diff --git a/x-pack/plugin/inference/qa/inference-service-tests/src/javaRestTest/java/org/elasticsearch/xpack/inference/InferenceCrudIT.java b/x-pack/plugin/inference/qa/inference-service-tests/src/javaRestTest/java/org/elasticsearch/xpack/inference/InferenceCrudIT.java
index 50f83dc7b02eb..52ebaaaf8826c 100644
--- a/x-pack/plugin/inference/qa/inference-service-tests/src/javaRestTest/java/org/elasticsearch/xpack/inference/InferenceCrudIT.java
+++ b/x-pack/plugin/inference/qa/inference-service-tests/src/javaRestTest/java/org/elasticsearch/xpack/inference/InferenceCrudIT.java
@@ -35,7 +35,6 @@
 import java.util.stream.Stream;
 
 import static org.hamcrest.Matchers.containsString;
-import static org.hamcrest.Matchers.empty;
 import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.equalToIgnoringCase;
 import static org.hamcrest.Matchers.hasSize;
@@ -58,7 +57,7 @@ public void testCRUD() throws IOException {
         }
 
         var getAllModels = getAllModels();
-        int numModels = 12;
+        int numModels = 13;
         assertThat(getAllModels, hasSize(numModels));
 
         var getSparseModels = getModels("_all", TaskType.SPARSE_EMBEDDING);
@@ -553,8 +552,8 @@ private static String expectedResult(String input) {
         }
     }
 
-    public void testGetZeroModels() throws IOException {
+    public void testGetCompletionModels() throws IOException {
         var models = getModels("_all", TaskType.COMPLETION);
-        assertThat(models, empty());
+        assertEquals(models.size(), 1);
     }
 }
diff --git a/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceService.java b/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceService.java
index 48416faac6a06..e19034644862a 100644
--- a/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceService.java
+++ b/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceService.java
@@ -16,6 +16,8 @@
 import org.elasticsearch.core.Nullable;
 import org.elasticsearch.core.TimeValue;
 import org.elasticsearch.inference.ChunkedInference;
+import org.elasticsearch.inference.EmptySecretSettings;
+import org.elasticsearch.inference.EmptyTaskSettings;
 import org.elasticsearch.inference.InferenceServiceConfiguration;
 import org.elasticsearch.inference.InferenceServiceResults;
 import org.elasticsearch.inference.InputType;
@@ -42,6 +44,7 @@
 import org.elasticsearch.xpack.inference.services.SenderService;
 import org.elasticsearch.xpack.inference.services.ServiceComponents;
 import org.elasticsearch.xpack.inference.services.elastic.completion.ElasticInferenceServiceCompletionModel;
+import org.elasticsearch.xpack.inference.services.elastic.completion.ElasticInferenceServiceCompletionServiceSettings;
 import org.elasticsearch.xpack.inference.services.settings.RateLimitSettings;
 import org.elasticsearch.xpack.inference.telemetry.TraceContext;
 
@@ -67,10 +70,14 @@ public class ElasticInferenceService extends SenderService {
     public static final String NAME = "elastic";
     public static final String ELASTIC_INFERENCE_SERVICE_IDENTIFIER = "Elastic Inference Service";
 
-    private final ElasticInferenceServiceComponents elasticInferenceServiceComponents;
-
     private static final EnumSet<TaskType> supportedTaskTypes = EnumSet.of(TaskType.SPARSE_EMBEDDING, TaskType.COMPLETION);
     private static final String SERVICE_NAME = "Elastic";
+    private static final String DEFAULT_EIS_CHAT_COMPLETION_MODEL_ID_V1 = "rainbow-sprinkles";
+    private static final String DEFAULT_EIS_CHAT_COMPLETION_ENDPOINT_ID_V1 = ".eis-alpha-1";
+    private static final Set<String> DEFAULT_EIS_ENDPOINT_IDS = Set.of(DEFAULT_EIS_CHAT_COMPLETION_ENDPOINT_ID_V1);
+
+    private final ElasticInferenceServiceComponents elasticInferenceServiceComponents;
+    private final List<Model> defaultEndpoints;
 
     public ElasticInferenceService(
         HttpRequestSender.Factory factory,
@@ -79,6 +86,23 @@ public ElasticInferenceService(
     ) {
         super(factory, serviceComponents);
         this.elasticInferenceServiceComponents = elasticInferenceServiceComponents;
+        this.defaultEndpoints = initDefaultEndpoints();
+    }
+
+    private List<Model> initDefaultEndpoints() {
+        return List.of(v1DefaultCompletionModel());
+    }
+
+    private ElasticInferenceServiceCompletionModel v1DefaultCompletionModel() {
+        return new ElasticInferenceServiceCompletionModel(
+            DEFAULT_EIS_CHAT_COMPLETION_ENDPOINT_ID_V1,
+            TaskType.COMPLETION,
+            NAME,
+            new ElasticInferenceServiceCompletionServiceSettings(DEFAULT_EIS_CHAT_COMPLETION_MODEL_ID_V1, null),
+            EmptyTaskSettings.INSTANCE,
+            EmptySecretSettings.INSTANCE,
+            elasticInferenceServiceComponents
+        );
     }
 
     @Override
@@ -175,6 +199,17 @@ public void parseRequestConfig(
         Map<String, Object> config,
         ActionListener<Model> parsedModelListener
     ) {
+        if (DEFAULT_EIS_ENDPOINT_IDS.contains(inferenceEntityId)) {
+            parsedModelListener.onFailure(
+                new ElasticsearchStatusException(
+                    "[{}] is a reserved inference Id. Cannot create a new inference endpoint with a reserved Id",
+                    RestStatus.BAD_REQUEST,
+                    inferenceEntityId
+                )
+            );
+            return;
+        }
+
         try {
             Map<String, Object> serviceSettingsMap = removeFromMapOrThrowIfNull(config, ModelConfigurations.SERVICE_SETTINGS);
             Map<String, Object> taskSettingsMap = removeFromMapOrDefaultEmpty(config, ModelConfigurations.TASK_SETTINGS);
@@ -210,6 +245,16 @@ public EnumSet<TaskType> supportedTaskTypes() {
         return supportedTaskTypes;
     }
 
+    @Override
+    public List<DefaultConfigId> defaultConfigIds() {
+        return List.of(new DefaultConfigId(DEFAULT_EIS_CHAT_COMPLETION_ENDPOINT_ID_V1, TaskType.COMPLETION, this));
+    }
+
+    @Override
+    public void defaultConfigs(ActionListener<List<Model>> defaultsListener) {
+        defaultsListener.onResponse(defaultEndpoints);
+    }
+
     private static ElasticInferenceServiceModel createModel(
         String inferenceEntityId,
         TaskType taskType,
diff --git a/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceServiceSettings.java b/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceServiceSettings.java
index 5146cec1552af..3801e0acc8727 100644
--- a/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceServiceSettings.java
+++ b/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceServiceSettings.java
@@ -35,7 +35,6 @@ public class ElasticInferenceServiceSettings {
     public ElasticInferenceServiceSettings(Settings settings) {
         eisGatewayUrl = EIS_GATEWAY_URL.get(settings);
         elasticInferenceServiceUrl = ELASTIC_INFERENCE_SERVICE_URL.get(settings);
-
     }
 
     public static List<Setting<?>> getSettingsDefinitions() {
diff --git a/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/completion/ElasticInferenceServiceCompletionModel.java b/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/completion/ElasticInferenceServiceCompletionModel.java
index 84039cd7cc33c..d129dcf9fea6b 100644
--- a/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/completion/ElasticInferenceServiceCompletionModel.java
+++ b/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/completion/ElasticInferenceServiceCompletionModel.java
@@ -74,7 +74,7 @@ public ElasticInferenceServiceCompletionModel(
 
     }
 
-    ElasticInferenceServiceCompletionModel(
+    public ElasticInferenceServiceCompletionModel(
         String inferenceEntityId,
         TaskType taskType,
         String service,
diff --git a/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/completion/ElasticInferenceServiceCompletionServiceSettings.java b/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/completion/ElasticInferenceServiceCompletionServiceSettings.java
index 3c8182a7d41a4..931ce8109462e 100644
--- a/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/completion/ElasticInferenceServiceCompletionServiceSettings.java
+++ b/x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/completion/ElasticInferenceServiceCompletionServiceSettings.java
@@ -12,6 +12,7 @@
 import org.elasticsearch.common.ValidationException;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
+import org.elasticsearch.core.Nullable;
 import org.elasticsearch.inference.ModelConfigurations;
 import org.elasticsearch.inference.ServiceSettings;
 import org.elasticsearch.xcontent.XContentBuilder;
@@ -60,7 +61,7 @@ public static ElasticInferenceServiceCompletionServiceSettings fromMap(Map<Strin
     private final String modelId;
     private final RateLimitSettings rateLimitSettings;
 
-    public ElasticInferenceServiceCompletionServiceSettings(String modelId, RateLimitSettings rateLimitSettings) {
+    public ElasticInferenceServiceCompletionServiceSettings(String modelId, @Nullable RateLimitSettings rateLimitSettings) {
         this.modelId = Objects.requireNonNull(modelId);
         this.rateLimitSettings = Objects.requireNonNullElse(rateLimitSettings, DEFAULT_RATE_LIMIT_SETTINGS);
     }