diff --git a/openai-java-core/src/main/kotlin/com/openai/models/beta/responses/ResponseCreateParams.kt b/openai-java-core/src/main/kotlin/com/openai/models/beta/responses/ResponseCreateParams.kt
index fe655bf59..26a3b2152 100644
--- a/openai-java-core/src/main/kotlin/com/openai/models/beta/responses/ResponseCreateParams.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/models/beta/responses/ResponseCreateParams.kt
@@ -4729,6 +4729,11 @@ private constructor(
                 additionalProperties.put(key, value)
             }
 
+            /** Adds a metadata property using the string value type supported by the API. */
+            fun putProperty(key: String, value: String) = apply {
+                putAdditionalProperty(key, JsonValue.from(value))
+            }
+
             fun putAllAdditionalProperties(additionalProperties: Map<String, JsonValue>) = apply {
                 this.additionalProperties.putAll(additionalProperties)
             }
diff --git a/openai-java-core/src/main/kotlin/com/openai/models/responses/ResponseCreateParams.kt b/openai-java-core/src/main/kotlin/com/openai/models/responses/ResponseCreateParams.kt
index d00cfddf4..1b90a3383 100644
--- a/openai-java-core/src/main/kotlin/com/openai/models/responses/ResponseCreateParams.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/models/responses/ResponseCreateParams.kt
@@ -4607,6 +4607,11 @@ private constructor(
                 additionalProperties.put(key, value)
             }
 
+            /** Adds a metadata property using the string value type supported by the API. */
+            fun putProperty(key: String, value: String) = apply {
+                putAdditionalProperty(key, JsonValue.from(value))
+            }
+
             fun putAllAdditionalProperties(additionalProperties: Map<String, JsonValue>) = apply {
                 this.additionalProperties.putAll(additionalProperties)
             }
diff --git a/openai-java-core/src/test/kotlin/com/openai/models/beta/responses/ResponseCreateParamsTest.kt b/openai-java-core/src/test/kotlin/com/openai/models/beta/responses/ResponseCreateParamsTest.kt
index be7b4e91b..7a5433a69 100644
--- a/openai-java-core/src/test/kotlin/com/openai/models/beta/responses/ResponseCreateParamsTest.kt
+++ b/openai-java-core/src/test/kotlin/com/openai/models/beta/responses/ResponseCreateParamsTest.kt
@@ -10,6 +10,15 @@ import org.junit.jupiter.api.Test
 
 internal class ResponseCreateParamsTest {
 
+    @Test
+    fun metadataPropertyUsesAStringJsonValue() {
+        val metadata =
+            ResponseCreateParams.Metadata.builder().putProperty("someNumericId", "123").build()
+
+        assertThat(metadata._additionalProperties())
+            .containsEntry("someNumericId", JsonValue.from("123"))
+    }
+
     @Test
     fun create() {
         ResponseCreateParams.builder()
diff --git a/openai-java-core/src/test/kotlin/com/openai/models/responses/ResponseCreateParamsTest.kt b/openai-java-core/src/test/kotlin/com/openai/models/responses/ResponseCreateParamsTest.kt
index ddc3b036a..b1c3946ea 100644
--- a/openai-java-core/src/test/kotlin/com/openai/models/responses/ResponseCreateParamsTest.kt
+++ b/openai-java-core/src/test/kotlin/com/openai/models/responses/ResponseCreateParamsTest.kt
@@ -14,6 +14,15 @@ import org.junit.jupiter.api.Test
 
 internal class ResponseCreateParamsTest {
 
+    @Test
+    fun metadataPropertyUsesAStringJsonValue() {
+        val metadata =
+            ResponseCreateParams.Metadata.builder().putProperty("someNumericId", "123").build()
+
+        assertThat(metadata._additionalProperties())
+            .containsEntry("someNumericId", JsonValue.from("123"))
+    }
+
     @Test
     fun create() {
         ResponseCreateParams.builder()