diff --git a/apps/aether-gateway/src/handlers/admin/provider/query/models/model_test.rs b/apps/aether-gateway/src/handlers/admin/provider/query/models/model_test.rs
index 86cdf14be..c5f8ba53b 100644
--- a/apps/aether-gateway/src/handlers/admin/provider/query/models/model_test.rs
+++ b/apps/aether-gateway/src/handlers/admin/provider/query/models/model_test.rs
@@ -635,7 +635,6 @@ fn provider_query_build_test_request_body_for_api_format_with_search_session(
             "model": model,
             "input": message,
             "max_output_tokens": 30,
-            "temperature": 0.7,
             "stream": true,
         }),
         "openai:search" => json!({
@@ -654,7 +653,6 @@ fn provider_query_build_test_request_body_for_api_format_with_search_session(
                 "content": message
             }],
             "max_tokens": 30,
-            "temperature": 0.7,
             "stream": true,
         }),
         _ => json!({
@@ -664,7 +662,6 @@ fn provider_query_build_test_request_body_for_api_format_with_search_session(
                 "content": message
             }],
             "max_tokens": 30,
-            "temperature": 0.7,
             "stream": true,
         }),
     }
@@ -811,7 +808,6 @@ fn provider_query_build_test_request_body_with_model_policy(
             "content": provider_query_extract_message(payload)
                 .unwrap_or_else(|| DEFAULT_PROVIDER_QUERY_TEST_MESSAGE.to_string())
         }],
-        "temperature": 0.7,
         "stream": true,
     })
 }
diff --git a/apps/aether-gateway/src/handlers/admin/provider/query/models/model_test/tests.rs b/apps/aether-gateway/src/handlers/admin/provider/query/models/model_test/tests.rs
index 4c050c452..eaeefbb3e 100644
--- a/apps/aether-gateway/src/handlers/admin/provider/query/models/model_test/tests.rs
+++ b/apps/aether-gateway/src/handlers/admin/provider/query/models/model_test/tests.rs
@@ -242,6 +242,26 @@ fn provider_query_default_test_request_body_does_not_set_max_tokens() {
     );
 }
 
+#[test]
+fn provider_query_default_test_request_bodies_do_not_set_temperature() {
+    let payload = json!({});
+    let default_body = provider_query_build_test_request_body(&payload, "fallback-model");
+    assert!(default_body.get("temperature").is_none());
+
+    for api_format in ["openai:chat", "openai:responses", "claude:messages"] {
+        let body = provider_query_build_test_request_body_for_api_format(
+            &payload,
+            "fallback-model",
+            "/api/admin/provider-query/test-model",
+            api_format,
+        );
+        assert!(
+            body.get("temperature").is_none(),
+            "admin model test must not set temperature for {api_format}"
+        );
+    }
+}
+
 #[test]
 fn provider_query_failover_request_body_overrides_custom_model() {
     let payload = json!({
diff --git a/apps/aether-gateway/src/tests/control/admin/provider_query.rs b/apps/aether-gateway/src/tests/control/admin/provider_query.rs
index 51f435991..0f82c669b 100644
--- a/apps/aether-gateway/src/tests/control/admin/provider_query.rs
+++ b/apps/aether-gateway/src/tests/control/admin/provider_query.rs
@@ -2825,7 +2825,6 @@ async fn gateway_streams_windsurf_connect_upstream_for_admin_model_test_impl() {
                     "content": "Hello! This is a test message."
                 }],
                 "max_tokens": 30,
-                "temperature": 0.7,
                 "stream": true
             }
         }))
diff --git a/frontend/src/features/providers/components/provider-tabs/__tests__/model-test-request.spec.ts b/frontend/src/features/providers/components/provider-tabs/__tests__/model-test-request.spec.ts
index ce3c6792e..05f7003e6 100644
--- a/frontend/src/features/providers/components/provider-tabs/__tests__/model-test-request.spec.ts
+++ b/frontend/src/features/providers/components/provider-tabs/__tests__/model-test-request.spec.ts
@@ -71,6 +71,7 @@ describe('buildDefaultModelTestRequestBody', () => {
 
     expect(body.messages).toEqual([{ role: 'user', content: 'Hello! This is a test message.' }])
     expect(body.stream).toBe(true)
+    expect(body.temperature).toBeUndefined()
     expect(body.input).toBeUndefined()
   })
 
diff --git a/frontend/src/features/providers/components/provider-tabs/model-test-request.ts b/frontend/src/features/providers/components/provider-tabs/model-test-request.ts
index f0c2cde74..7175ebef7 100644
--- a/frontend/src/features/providers/components/provider-tabs/model-test-request.ts
+++ b/frontend/src/features/providers/components/provider-tabs/model-test-request.ts
@@ -257,7 +257,6 @@ export function buildDefaultModelTestRequestBody(
       },
     ],
     max_tokens: 30,
-    temperature: 0.7,
     stream: true,
   }, null, 2)
 }