diff --git a/docs/generators/swift6.md b/docs/generators/swift6.md
index f6a81c3f3cb..aec4c81817f 100644
--- a/docs/generators/swift6.md
+++ b/docs/generators/swift6.md
@@ -29,6 +29,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |hashableModels|Make hashable models (default: true)| |true|
 |hideGenerationTimestamp|Hides the generation timestamp when files are generated.| |true|
 |legacyDiscriminatorBehavior|Set to false for generators with better support for discriminators. (Python, Java, Go, PowerShell, C# have this enabled by default).|<dl><dt>**true**</dt><dd>The mapping in the discriminator includes descendent schemas that allOf inherit from self and the discriminator mapping schemas in the OAS document.</dd><dt>**false**</dt><dd>The mapping in the discriminator includes any descendent schemas that allOf inherit from self, any oneOf schemas, any anyOf schemas, any x-discriminator-values, and the discriminator mapping schemas in the OAS document AND Codegen validates that oneOf and anyOf schemas contain the required discriminator and throws an error if the discriminator is missing.</dd></dl>|true|
+|lenientTypeCast|Accept and cast values for simple types (string-&gt;bool, string-&gt;int, int-&gt;string)| |false|
 |library|Library template (sub-template) to use|<dl><dt>**urlsession**</dt><dd>[DEFAULT] HTTP client: URLSession</dd><dt>**alamofire**</dt><dd>HTTP client: Alamofire</dd><dt>**vapor**</dt><dd>HTTP client: Vapor</dd></dl>|urlsession|
 |mapFileBinaryToData|[WARNING] This option will be removed and enabled by default in the future once we've enhanced the code to work with `Data` in all the different situations. Map File and Binary to Data (default: false)| |false|
 |nonPublicApi|Generates code with reduced access modifiers; allows embedding elsewhere without exposing non-public API calls to consumers.(default: false)| |null|
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift6ClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift6ClientCodegen.java
index ee3ee02ba3f..e075c95c7f9 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift6ClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift6ClientCodegen.java
@@ -64,6 +64,7 @@ public class Swift6ClientCodegen extends DefaultCodegen implements CodegenConfig
     public static final String READONLY_PROPERTIES = "readonlyProperties";
     public static final String SWIFT_USE_API_NAMESPACE = "swiftUseApiNamespace";
     public static final String DEFAULT_POD_AUTHORS = "OpenAPI Generator";
+    public static final String LENIENT_TYPE_CAST = "lenientTypeCast";
     public static final String USE_SPM_FILE_STRUCTURE = "useSPMFileStructure";
     public static final String SWIFT_PACKAGE_PATH = "swiftPackagePath";
     public static final String ONE_OF_UNKNOWN_DEFAULT_CASE = "oneOfUnknownDefaultCase";
@@ -94,6 +95,8 @@ public class Swift6ClientCodegen extends DefaultCodegen implements CodegenConfig
     @Setter
     protected boolean objcCompatible = false;
     @Setter
+    protected boolean lenientTypeCast = false;
+    @Setter
     protected boolean readonlyProperties = false;
     @Setter
     protected boolean swiftUseApiNamespace = false;
@@ -601,6 +604,8 @@ public class Swift6ClientCodegen extends DefaultCodegen implements CodegenConfig
         }
         additionalProperties.put(COMBINE_DEFERRED, combineDeferred);
 
+        setLenientTypeCast(convertPropertyToBooleanAndWriteBack(LENIENT_TYPE_CAST));
+
         // make api and model doc path available in mustache template
         additionalProperties.put("apiDocPath", apiDocPath);
         additionalProperties.put("modelDocPath", modelDocPath);
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/swift6/Swift6ClientCodegenOptionsTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/swift6/Swift6ClientCodegenOptionsTest.java
index ee2ab3d21a5..676390038da 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/swift6/Swift6ClientCodegenOptionsTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/swift6/Swift6ClientCodegenOptionsTest.java
@@ -46,6 +46,7 @@ public class Swift6ClientCodegenOptionsTest extends AbstractOptionsTest {
         verify(clientCodegen)
                 .setNonPublicApi(Boolean.parseBoolean(Swift6ClientCodegenOptionsProvider.NON_PUBLIC_API_REQUIRED_VALUE));
         verify(clientCodegen).setObjcCompatible(Boolean.parseBoolean(Swift6ClientCodegenOptionsProvider.OBJC_COMPATIBLE_VALUE));
+        verify(clientCodegen).setLenientTypeCast(Boolean.parseBoolean(Swift6ClientCodegenOptionsProvider.LENIENT_TYPE_CAST_VALUE));
         verify(clientCodegen).setPrependFormOrBodyParameters(
                 Boolean.valueOf(Swift6ClientCodegenOptionsProvider.PREPEND_FORM_OR_BODY_PARAMETERS_VALUE));
         verify(clientCodegen)