diff --git a/typed/src/commonMain/kotlin/io/github/nomisrev/openapi/OpenAPITransformer.kt b/typed/src/commonMain/kotlin/io/github/nomisrev/openapi/OpenAPITransformer.kt
index 926fc06..e98fb4f 100644
--- a/typed/src/commonMain/kotlin/io/github/nomisrev/openapi/OpenAPITransformer.kt
+++ b/typed/src/commonMain/kotlin/io/github/nomisrev/openapi/OpenAPITransformer.kt
@@ -198,12 +198,18 @@ private class OpenAPITransformer(private val openAPI: OpenAPI) {
       is Type.Basic ->
         when (type) {
           Type.Basic.Array -> collection(context)
-          Type.Basic.Boolean -> Primitive.Boolean(default?.toString()?.toBoolean(), description)
+          Type.Basic.Boolean -> Primitive.Boolean(default?.toString()?.toBooleanStrictOrNull(), description)
           Type.Basic.Integer -> Primitive.Int(default?.toString()?.toIntOrNull(), description)
           Type.Basic.Number -> Primitive.Double(default?.toString()?.toDoubleOrNull(), description)
           Type.Basic.String ->
             if (format == "binary") Model.OctetStream(description)
-            else Primitive.String(default?.toString(), description)
+            else Primitive.String(
+              when(val default = default) {
+                is ExampleValue.Multiple ->
+                  default.values.joinToString()
+                is ExampleValue.Single -> default.value
+                null -> null
+              }, description)
           Type.Basic.Object -> toObject(context)
           Type.Basic.Null -> TODO("Schema.Type.Basic.Null")
         }
diff --git a/typed/src/commonTest/kotlin/io/github/nomisrev/openapi/ModelTest.kt b/typed/src/commonTest/kotlin/io/github/nomisrev/openapi/ModelTest.kt
index d38473b..5ea8bc8 100644
--- a/typed/src/commonTest/kotlin/io/github/nomisrev/openapi/ModelTest.kt
+++ b/typed/src/commonTest/kotlin/io/github/nomisrev/openapi/ModelTest.kt
@@ -314,34 +314,6 @@ class ModelTest {
     assertEquals(setOf(expected), actual)
   }
 
-  @Test
-  fun int() {
-    val actual =
-      testAPI
-        .copy(
-          components =
-            Components(schemas = mapOf("Primitive.Int" to value(Schema(type = Type.Basic.Integer))))
-        )
-        .models()
-    val expected = Primitive.Int(default = null, description = null)
-    assertEquals(setOf(expected), actual)
-  }
-
-  @Test
-  fun string() {
-    val actual =
-      testAPI
-        .copy(
-          components =
-            Components(
-              schemas = mapOf("Primitive.String" to value(Schema(type = Type.Basic.String)))
-            )
-        )
-        .models()
-    val expected = Primitive.String(default = null, description = null)
-    assertEquals(setOf(expected), actual)
-  }
-
   @Test
   fun binary() {
     val actual =
@@ -360,35 +332,8 @@ class ModelTest {
     assertEquals(setOf(expected), actual)
   }
 
-  @Test
-  fun boolean() {
-    val actual =
-      testAPI
-        .copy(
-          components =
-            Components(
-              schemas = mapOf("Primitive.Boolean" to value(Schema(type = Type.Basic.Boolean)))
-            )
-        )
-        .models()
-    val expected = Primitive.Boolean(default = null, description = null)
-    assertEquals(setOf(expected), actual)
-  }
 
-  @Test
-  fun double() {
-    val actual =
-      testAPI
-        .copy(
-          components =
-            Components(
-              schemas = mapOf("Primitive.Number" to value(Schema(type = Type.Basic.Number)))
-            )
-        )
-        .models()
-    val expected = Primitive.Double(default = null, description = null)
-    assertEquals(setOf(expected), actual)
-  }
+
 
   @Test
   fun defaultArrayIsList() {
diff --git a/typed/src/commonTest/kotlin/io/github/nomisrev/openapi/PrimitiveTest.kt b/typed/src/commonTest/kotlin/io/github/nomisrev/openapi/PrimitiveTest.kt
new file mode 100644
index 0000000..47c7a55
--- /dev/null
+++ b/typed/src/commonTest/kotlin/io/github/nomisrev/openapi/PrimitiveTest.kt
@@ -0,0 +1,179 @@
+package io.github.nomisrev.openapi
+
+import io.github.nomisrev.openapi.Model.Primitive
+import io.github.nomisrev.openapi.ReferenceOr.Companion.value
+import io.github.nomisrev.openapi.Schema.Type
+import org.junit.jupiter.api.assertThrows
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class PrimitiveTest {
+  @Test
+  fun double() {
+    primitive(
+      Schema(
+        type = Type.Basic.Number,
+        default = ExampleValue("1"),
+        description = "My Desc"
+      ),
+      Primitive.Double(1.0, description = "My Desc")
+    )
+  }
+
+  @Test
+  fun doubleIncorrectDefault() {
+    primitive(
+      Schema(
+        type = Type.Basic.Number,
+        default = ExampleValue("Nonsense Value"),
+        description = "My Desc"
+      ),
+      Primitive.Double(null, description = "My Desc")
+    )
+  }
+
+  @Test
+  fun doubleIncorrectDefaultMultiple() {
+    primitive(
+      Schema(
+        type = Type.Basic.Number,
+        default = ExampleValue.Multiple(listOf("Nonsense", "Value")),
+        description = "My Desc"
+      ),
+      Primitive.Double(null, description = "My Desc")
+    )
+  }
+
+  @Test
+  fun boolean() {
+    primitive(
+      Schema(
+        type = Type.Basic.Boolean,
+        default = ExampleValue("true"),
+        description = "My Desc"
+      ),
+      Primitive.Boolean(true, description = "My Desc")
+    )
+  }
+
+  @Test
+  fun booleanIncorrectDefault() {
+    primitive(
+      Schema(
+        type = Type.Basic.Boolean,
+        default = ExampleValue("Nonsense Value"),
+        description = "My Desc"
+      ),
+      Primitive.Boolean(null, description = "My Desc")
+    )
+  }
+
+  @Test
+  fun booleanIncorrectDefaultMultiple() {
+    primitive(
+      Schema(
+        type = Type.Basic.Boolean,
+        default = ExampleValue.Multiple(listOf("Nonsense", "Value")),
+        description = "My Desc"
+      ),
+      Primitive.Boolean(null, description = "My Desc")
+    )
+  }
+
+  @Test
+  fun integer() {
+    primitive(
+      Schema(
+        type = Type.Basic.Integer,
+        default = ExampleValue("2"),
+        description = "My Desc"
+      ),
+      Primitive.Int(2, description = "My Desc")
+    )
+  }
+
+  @Test
+  fun integerIncorrectDefault() {
+    primitive(
+      Schema(
+        type = Type.Basic.Integer,
+        default = ExampleValue("Nonsense Value"),
+        description = "My Desc"
+      ),
+      Primitive.Int(null, description = "My Desc")
+    )
+  }
+
+  @Test
+  fun integerIncorrectDefaultMultiple() {
+    primitive(
+      Schema(
+        type = Type.Basic.Integer,
+        default = ExampleValue.Multiple(listOf("Nonsense", "Value")),
+        description = "My Desc"
+      ),
+      Primitive.Int(null, description = "My Desc")
+    )
+  }
+
+  @Test
+  fun string() {
+    primitive(
+      Schema(
+        type = Type.Basic.String,
+        default = ExampleValue("Some Text"),
+        description = "My Desc"
+      ),
+      Primitive.String("Some Text", description = "My Desc")
+    )
+  }
+
+  @Test
+  fun stringIntegerDefaultRemainsString() {
+    primitive(
+      Schema(
+        type = Type.Basic.String,
+        default = ExampleValue("999"),
+        description = "My Desc"
+      ),
+      Primitive.String("999", description = "My Desc")
+    )
+  }
+
+  @Test
+  fun stringIncorrectDefaultMultiple() {
+    primitive(
+      Schema(
+        type = Type.Basic.String,
+        default = ExampleValue.Multiple(listOf("Nonsense", "Value")),
+        description = "My Desc"
+      ),
+      Primitive.String("Nonsense, Value", description = "My Desc")
+    )
+  }
+
+  @Test
+  fun nullNotSupported() {
+    assertThrows<NotImplementedError> {
+      primitive(
+        Schema(
+          type = Type.Basic.Null,
+          default = ExampleValue.Multiple(listOf("Nonsense", "Value")),
+          description = "My Desc"
+        ),
+        Primitive.String("Nonsense, Value", description = "My Desc")
+      )
+    }
+  }
+
+  private fun primitive(
+    schema: Schema,
+    model: Model
+  ) {
+    val actual =
+      testAPI
+        .copy(components = Components(schemas = mapOf("Primitive" to value(schema))))
+        .models()
+    assertEquals(setOf(model), actual)
+  }
+}
\ No newline at end of file