diff --git a/homeassistant/helpers/intent.py b/homeassistant/helpers/intent.py
index d7c0f90e2f9..faf16ad572c 100644
--- a/homeassistant/helpers/intent.py
+++ b/homeassistant/helpers/intent.py
@@ -1362,6 +1362,8 @@ class IntentResponse:
 
         if self.reprompt:
             response_dict["reprompt"] = self.reprompt
+        if self.speech_slots:
+            response_dict["speech_slots"] = self.speech_slots
 
         response_data: dict[str, Any] = {}
 
diff --git a/tests/helpers/test_llm.py b/tests/helpers/test_llm.py
index 6ac17a2fe0e..b4a768c4429 100644
--- a/tests/helpers/test_llm.py
+++ b/tests/helpers/test_llm.py
@@ -149,8 +149,13 @@ async def test_assist_api(
 
     assert test_context.json_fragment  # To reproduce an error case in tracing
     intent_response = intent.IntentResponse("*")
-    intent_response.matched_states = [State("light.matched", "on")]
-    intent_response.unmatched_states = [State("light.unmatched", "on")]
+    intent_response.async_set_states(
+        [State("light.matched", "on")], [State("light.unmatched", "on")]
+    )
+    intent_response.async_set_speech("Some speech")
+    intent_response.async_set_card("Card title", "card content")
+    intent_response.async_set_speech_slots({"hello": 1})
+    intent_response.async_set_reprompt("Do it again")
     tool_input = llm.ToolInput(
         tool_name="test_intent",
         tool_args={"area": "kitchen", "floor": "ground_floor"},
@@ -181,8 +186,22 @@ async def test_assist_api(
             "success": [],
             "targets": [],
         },
+        "reprompt": {
+            "plain": {
+                "extra_data": None,
+                "reprompt": "Do it again",
+            },
+        },
         "response_type": "action_done",
-        "speech": {},
+        "speech": {
+            "plain": {
+                "extra_data": None,
+                "speech": "Some speech",
+            },
+        },
+        "speech_slots": {
+            "hello": 1,
+        },
     }
 
     # Call with a device/area/floor
@@ -227,7 +246,21 @@ async def test_assist_api(
             "targets": [],
         },
         "response_type": "action_done",
-        "speech": {},
+        "reprompt": {
+            "plain": {
+                "extra_data": None,
+                "reprompt": "Do it again",
+            },
+        },
+        "speech": {
+            "plain": {
+                "extra_data": None,
+                "speech": "Some speech",
+            },
+        },
+        "speech_slots": {
+            "hello": 1,
+        },
     }