diff --git a/backend/tests/test_ai.py b/backend/tests/test_ai.py
index 653f87d..eb2a3a2 100644
--- a/backend/tests/test_ai.py
+++ b/backend/tests/test_ai.py
@@ -59,3 +59,56 @@ class AiRouteTests(TestCase):
         self.assertEqual(resp.status_code, 200)
         self.assertEqual(data.get("profile"), "atlas-genius")
         self.assertEqual(data.get("model"), "genius-model")
+
+    def test_atlasbot_answer_uses_profile_specific_timeout(self):
+        captured: dict[str, object] = {}
+
+        class DummyResponse:
+            status_code = 200
+
+            def json(self):
+                return {"reply": "atlas reply"}
+
+        class DummyClient:
+            def __init__(self, timeout):
+                captured["timeout"] = timeout
+
+            def __enter__(self):
+                return self
+
+            def __exit__(self, exc_type, exc, tb):
+                return False
+
+            def post(self, endpoint, json=None, headers=None):
+                captured["endpoint"] = endpoint
+                captured["json"] = json
+                captured["headers"] = headers or {}
+                return DummyResponse()
+
+        with (
+            mock.patch.object(ai.httpx, "Client", DummyClient),
+            mock.patch.object(ai.settings, "AI_ATLASBOT_ENDPOINT", "http://atlasbot.invalid/v1/answer"),
+        ):
+            reply = ai._atlasbot_answer("How is Titan doing?", "genius", "conv-1")
+
+        self.assertEqual(reply, "atlas reply")
+        self.assertEqual(captured["timeout"], ai.settings.AI_ATLASBOT_TIMEOUT_GENIUS_SEC)
+        self.assertEqual(captured["json"], {"prompt": "How is Titan doing?", "mode": "genius", "conversation_id": "conv-1"})
+
+    def test_chat_returns_fallback_when_atlasbot_returns_empty(self):
+        with mock.patch.object(ai, "_atlasbot_answer", return_value=""):
+            resp = self.client.post(
+                "/api/chat",
+                data=json.dumps(
+                    {
+                        "message": "How is Titan doing?",
+                        "profile": "atlas-quick",
+                    }
+                ),
+                content_type="application/json",
+            )
+
+        data = resp.get_json()
+        self.assertEqual(resp.status_code, 200)
+        self.assertEqual(data.get("source"), "atlas-quick")
+        self.assertIn("Quick mode hit", data.get("reply", ""))