diff --git a/spring-ai-model/src/main/java/org/springframework/ai/util/json/JsonParser.java b/spring-ai-model/src/main/java/org/springframework/ai/util/json/JsonParser.java
index b5448803152..4e5d007ac8b 100644
--- a/spring-ai-model/src/main/java/org/springframework/ai/util/json/JsonParser.java
+++ b/spring-ai-model/src/main/java/org/springframework/ai/util/json/JsonParser.java
@@ -33,6 +33,8 @@
 
 /**
  * Utilities to perform parsing operations between JSON and Java.
+ *
+ * @author lambochen
  */
 public final class JsonParser {
 
@@ -141,7 +143,11 @@ public static Object toTypedObject(Object value, Class<?> type) {
 		if (javaType == String.class) {
 			return value.toString();
 		}
-		else if (javaType == Byte.class) {
+		if (value.toString().isEmpty()) {
+			return null;
+		}
+
+		if (javaType == Byte.class) {
 			return Byte.parseByte(value.toString());
 		}
 		else if (javaType == Integer.class) {
diff --git a/spring-ai-model/src/test/java/org/springframework/ai/util/json/JsonParserTests.java b/spring-ai-model/src/test/java/org/springframework/ai/util/json/JsonParserTests.java
index 61e073b701b..00981544025 100644
--- a/spring-ai-model/src/test/java/org/springframework/ai/util/json/JsonParserTests.java
+++ b/spring-ai-model/src/test/java/org/springframework/ai/util/json/JsonParserTests.java
@@ -262,6 +262,12 @@ void doesNotDoubleSerializeValidJsonString() {
 		assertThat(input).isEqualTo(result);
 	}
 
+	@Test
+	void emptyString() {
+		var value = JsonParser.toTypedObject("", Long.class);
+		assertThat(value).isEqualTo(null);
+	}
+
 	record TestRecord(String name, Integer age) {
 	}