diff --git a/core/runtime/src/main/java/io/quarkiverse/langchain4j/QuarkusJsonCodecFactory.java b/core/runtime/src/main/java/io/quarkiverse/langchain4j/QuarkusJsonCodecFactory.java
index 263f237d4..2051251cb 100644
--- a/core/runtime/src/main/java/io/quarkiverse/langchain4j/QuarkusJsonCodecFactory.java
+++ b/core/runtime/src/main/java/io/quarkiverse/langchain4j/QuarkusJsonCodecFactory.java
@@ -31,6 +31,9 @@ public Json.JsonCodec create() {
 
     private static class Codec implements Json.JsonCodec {
 
+        private static final String JSON_START_MARKER = "```json\n";
+        private static final String JSON_END_MARKER = "\n```";
+
         @Override
         public String toJson(Object o) {
             try {
@@ -43,7 +46,8 @@ public String toJson(Object o) {
         @Override
         public <T> T fromJson(String json, Class<T> type) {
             try {
-                return ObjectMapperHolder.MAPPER.readValue(json, type);
+                String sanitizedJson = sanitize(json, type);
+                return ObjectMapperHolder.MAPPER.readValue(sanitizedJson, type);
             } catch (JsonProcessingException e) {
                 if ((e instanceof JsonParseException) && (type.isEnum())) {
                     // this is the case where LangChain4j simply passes the string value of the enum to Json.fromJson()
@@ -55,6 +59,16 @@ public <T> T fromJson(String json, Class<T> type) {
             }
         }
 
+        private <T> String sanitize(String original, Class<T> type) {
+            if (String.class.equals(type)) {
+                return original;
+            }
+            if (original.startsWith(JSON_START_MARKER) && original.endsWith(JSON_END_MARKER)) {
+                return original.substring(JSON_START_MARKER.length(), original.length() - JSON_END_MARKER.length());
+            }
+            return original;
+        }
+
         @Override
         public InputStream toInputStream(Object o, Class<?> type) throws IOException {
             return new ByteArrayInputStream(ObjectMapperHolder.WRITER.writeValueAsBytes(o));
diff --git a/model-providers/openai/openai-vanilla/deployment/src/test/java/org/acme/examples/aiservices/AiServicesTest.java b/model-providers/openai/openai-vanilla/deployment/src/test/java/org/acme/examples/aiservices/AiServicesTest.java
index 614753458..844f90fe2 100644
--- a/model-providers/openai/openai-vanilla/deployment/src/test/java/org/acme/examples/aiservices/AiServicesTest.java
+++ b/model-providers/openai/openai-vanilla/deployment/src/test/java/org/acme/examples/aiservices/AiServicesTest.java
@@ -295,7 +295,7 @@ interface Chef {
     void test_create_recipe_from_list_of_ingredients() throws IOException {
         setChatCompletionMessageContent(
                 // this is supposed to be a string inside a json string hence all the escaping...
-                "{\\n\\\"title\\\": \\\"Greek Salad\\\",\\n\\\"description\\\": \\\"A refreshing and tangy salad with Mediterranean flavors.\\\",\\n\\\"steps\\\": [\\n\\\"Chop, dice, and slice.\\\",\\n\\\"Mix veggies with feta.\\\",\\n\\\"Drizzle with olive oil.\\\",\\n\\\"Toss gently, then serve.\\\"\\n],\\n\\\"preparationTimeMinutes\\\": 15\\n}");
+                "```json\\n{\\n\\\"title\\\": \\\"Greek Salad\\\",\\n\\\"description\\\": \\\"A refreshing and tangy salad with Mediterranean flavors.\\\",\\n\\\"steps\\\": [\\n\\\"Chop, dice, and slice.\\\",\\n\\\"Mix veggies with feta.\\\",\\n\\\"Drizzle with olive oil.\\\",\\n\\\"Toss gently, then serve.\\\"\\n],\\n\\\"preparationTimeMinutes\\\": 15\\n}\\n```");
         Chef chef = AiServices.create(Chef.class, createChatModel());
 
         Recipe result = chef.createRecipeFrom("cucumber", "tomato", "feta", "onion", "olives");