diff --git a/tests/e2e/test_chat_completions.py b/tests/e2e/test_chat_completions.py
index 72b491f9..8093bcde 100644
--- a/tests/e2e/test_chat_completions.py
+++ b/tests/e2e/test_chat_completions.py
@@ -801,7 +801,7 @@ def test_web_search(client, model, high_web_search_rate_limit):
         messages=[
             {
                 "role": "system",
-                "content": "You are a helpful assistant that provides accurate and up-to-date information.",
+                "content": "You are a helpful assistant that provides accurate and up-to-date information. Answer in 10 words maximum and do not reason.",
             },
             {
                 "role": "user",
@@ -809,7 +809,7 @@ def test_web_search(client, model, high_web_search_rate_limit):
             },
         ],
         extra_body={"web_search": True},
-        temperature=0.2,
+        temperature=0.01,
         max_tokens=150,
     )
 
diff --git a/tests/e2e/test_chat_completions_http.py b/tests/e2e/test_chat_completions_http.py
index 32538f0b..f3111288 100644
--- a/tests/e2e/test_chat_completions_http.py
+++ b/tests/e2e/test_chat_completions_http.py
@@ -908,7 +908,7 @@ def test_web_search(client, model, high_web_search_rate_limit):
         "messages": [
             {
                 "role": "system",
-                "content": "You are a helpful assistant that provides accurate and up-to-date information.",
+                "content": "You are a helpful assistant that provides accurate and up-to-date information. Answer in 10 words maximum and do not reason.",
             },
             {
                 "role": "user",
@@ -916,7 +916,7 @@ def test_web_search(client, model, high_web_search_rate_limit):
             },
         ],
         "extra_body": {"web_search": True},
-        "temperature": 0.2,
+        "temperature": 0.01,
         "max_tokens": 150,
     }
 
diff --git a/tests/e2e/test_responses.py b/tests/e2e/test_responses.py
index f5f931c5..33b725cf 100644
--- a/tests/e2e/test_responses.py
+++ b/tests/e2e/test_responses.py
@@ -709,9 +709,9 @@ def test_web_search(client, model, high_web_search_rate_limit):
     response = client.responses.create(
         model=model,
         input="Who won the Roland Garros Open in 2024? Just reply with the winner's name.",
-        instructions="You are a helpful assistant that provides accurate and up-to-date information.",
+        instructions="You are a helpful assistant that provides accurate and up-to-date information. Answer in 10 words maximum and do not reason.",
         extra_body={"web_search": True},
-        temperature=0.2,
+        temperature=0.01,
     )
 
     assert response is not None, "Response should not be None"
diff --git a/tests/e2e/test_responses_http.py b/tests/e2e/test_responses_http.py
index 03db990a..fe5fea33 100644
--- a/tests/e2e/test_responses_http.py
+++ b/tests/e2e/test_responses_http.py
@@ -813,9 +813,8 @@ def test_web_search(client, model, high_web_search_rate_limit):
         "model": model,
         "input": "Who won the Roland Garros Open in 2024? Just reply with the winner's name.",
         "instructions": "You are a helpful assistant that provides accurate and up-to-date information. Answer in 10 words maximum and do not reason.",
-        "temperature": 0.2,
-        "max_output_tokens": 15000,
         "extra_body": {"web_search": True},
+        "temperature": 0.01,
     }
 
     response = client.post("/responses", json=payload, timeout=180)