diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
index 049cf935f8c8..e8ec89556643 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
@@ -5909,7 +5909,7 @@ public class DefaultCodegen implements CodegenConfig {
 
         if (ModelUtils.isMapSchema(schema)) {
             // Schema with additionalproperties: true (including composed schemas with additionalproperties: true)
-            if (ModelUtils.isGenerateAliasAsModel() && StringUtils.isNotBlank(name)) {
+            if (ModelUtils.isGenerateAliasAsModel(schema) && StringUtils.isNotBlank(name)) {
                 this.addBodyModelSchema(codegenParameter, name, schema, imports, bodyParameterName, true);
             } else {
                 Schema inner = getAdditionalProperties(schema);
@@ -5950,7 +5950,7 @@ public class DefaultCodegen implements CodegenConfig {
                 setParameterNullable(codegenParameter, codegenProperty);
             }
         } else if (ModelUtils.isArraySchema(schema)) {
-            if (ModelUtils.isGenerateAliasAsModel() && StringUtils.isNotBlank(name)) {
+            if (ModelUtils.isGenerateAliasAsModel(schema) && StringUtils.isNotBlank(name)) {
                 this.addBodyModelSchema(codegenParameter, name, schema, imports, bodyParameterName, true);
             } else {
                 final ArraySchema arraySchema = (ArraySchema) schema;
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
index 47d3540b1112..ee7b50c05c73 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
@@ -452,13 +452,13 @@ public class DefaultGenerator implements Generator {
                     // A composed schema (allOf, oneOf, anyOf) is considered a Map schema if the additionalproperties attribute is set
                     // for that composed schema. However, in the case of a composed schema, the properties are defined or referenced
                     // in the inner schemas, and the outer schema does not have properties.
-                    if (!ModelUtils.isGenerateAliasAsModel() && !ModelUtils.isComposedSchema(schema) && (schema.getProperties() == null || schema.getProperties().isEmpty())) {
+                    if (!ModelUtils.isGenerateAliasAsModel(schema) && !ModelUtils.isComposedSchema(schema) && (schema.getProperties() == null || schema.getProperties().isEmpty())) {
                         // schema without property, i.e. alias to map
                         LOGGER.info("Model {} not generated since it's an alias to map (without property) and `generateAliasAsModel` is set to false (default)", name);
                         continue;
                     }
                 } else if (ModelUtils.isArraySchema(schema)) { // check to see if it's an "array" model
-                    if (!ModelUtils.isGenerateAliasAsModel() && (schema.getProperties() == null || schema.getProperties().isEmpty())) {
+                    if (!ModelUtils.isGenerateAliasAsModel(schema) && (schema.getProperties() == null || schema.getProperties().isEmpty())) {
                         // schema without property, i.e. alias to array
                         LOGGER.info("Model {} not generated since it's an alias to array (without property) and `generateAliasAsModel` is set to false (default)", name);
                         continue;
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaCXFExtServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaCXFExtServerCodegen.java
index 4160502f47e7..f440163d4d6c 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaCXFExtServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaCXFExtServerCodegen.java
@@ -1400,7 +1400,7 @@ public class JavaCXFExtServerCodegen extends JavaCXFServerCodegen implements CXF
 
     @Override
     public String toDefaultValue(Schema p) {
-        if (ModelUtils.isGenerateAliasAsModel() && StringUtils.isNotEmpty(p.get$ref())) {
+        if (ModelUtils.isGenerateAliasAsModel(p) && StringUtils.isNotEmpty(p.get$ref())) {
             Schema<?> ref = ModelUtils.getReferencedSchema(this.openAPI, p);
             if (ModelUtils.isArraySchema(ref) || ModelUtils.isMapSchema(ref)) {
                 String typeDeclaration = getTypeDeclaration(p);
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/utils/ModelUtils.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/utils/ModelUtils.java
index 5320f58f256e..4c3e9fe01180 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/utils/ModelUtils.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/utils/ModelUtils.java
@@ -88,6 +88,10 @@ public class ModelUtils {
         return Boolean.parseBoolean(GlobalSettings.getProperty(generateAliasAsModelKey, "false"));
     }
 
+    public static boolean isGenerateAliasAsModel(Schema schema) {
+        return isGenerateAliasAsModel() || (schema.getExtensions() != null && schema.getExtensions().getOrDefault("x-generate-alias-as-model", false).equals(true));
+    }
+
     /**
      * Searches for the model by name in the map of models and returns it
      *
@@ -1037,7 +1041,7 @@ public class ModelUtils {
                 // top-level enum class
                 return schema;
             } else if (isArraySchema(ref)) {
-                if (isGenerateAliasAsModel()) {
+                if (isGenerateAliasAsModel(ref)) {
                     return schema; // generate a model extending array
                 } else {
                     return unaliasSchema(openAPI, allSchemas.get(ModelUtils.getSimpleRef(schema.get$ref())),
@@ -1049,7 +1053,7 @@ public class ModelUtils {
                 if (ref.getProperties() != null && !ref.getProperties().isEmpty()) // has at least one property
                     return schema; // treat it as model
                 else {
-                    if (isGenerateAliasAsModel()) {
+                    if (isGenerateAliasAsModel(ref)) {
                         return schema; // generate a model extending map
                     } else {
                         // treat it as a typical map