diff --git a/rust/src/chat/src/renderer/deepseek.rs b/rust/src/chat/src/renderer/deepseek.rs
index 2683c37ec3..1edc671d65 100644
--- a/rust/src/chat/src/renderer/deepseek.rs
+++ b/rust/src/chat/src/renderer/deepseek.rs
@@ -289,8 +289,8 @@ pub(super) fn resolve_reasoning(
         DsDialect::V41 => {
             let budget = match effort {
                 EffortValue::String(effort) => match effort.as_str() {
-                    "low" => 25,
-                    "high" => 50,
+                    "low" => 50,
+                    "high" => 75,
                     "xhigh" => 75,
                     "max" => 100,
                     _ => return Err(invalid_v41_reasoning_effort()),
diff --git a/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_1.txt b/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_1.txt
index 0897086688..a41d88e924 100644
--- a/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_1.txt
+++ b/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_1.txt
@@ -1,4 +1,4 @@
-<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 50 (range 1-100, the higher the value, the more thorough the reasoning)
+<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 75 (range 1-100, the higher the value, the more thorough the reasoning)
 
 You are a helpful assistant.
 
diff --git a/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_2.txt b/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_2.txt
index 4e93ce2cbb..fa481ca5cd 100644
--- a/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_2.txt
+++ b/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_2.txt
@@ -1,3 +1,3 @@
-<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 50 (range 1-100, the higher the value, the more thorough the reasoning)
+<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 75 (range 1-100, the higher the value, the more thorough the reasoning)
 
 You are a helpful assistant.<｜User｜>Hello<｜Assistant｜></think>Hi there! How can I help you?<｜end▁of▁sentence｜><｜User｜>What is the capital of France?<｜Assistant｜><think>The user asks about the capital of France. It is Paris.</think>The capital of France is Paris.<｜end▁of▁sentence｜>
\ No newline at end of file
diff --git a/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_developer_tools.txt b/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_developer_tools.txt
index 99f4af0d0e..bd329b7928 100644
--- a/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_developer_tools.txt
+++ b/rust/src/chat/src/renderer/deepseek_v41/fixtures/test_output_developer_tools.txt
@@ -1,4 +1,4 @@
-<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 50 (range 1-100, the higher the value, the more thorough the reasoning)
+<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 75 (range 1-100, the higher the value, the more thorough the reasoning)
 
 <｜User｜>question<｜User｜>policy
 
diff --git a/rust/src/chat/src/renderer/deepseek_v41/tests.rs b/rust/src/chat/src/renderer/deepseek_v41/tests.rs
index 62cf6d2024..3f9dc061a6 100644
--- a/rust/src/chat/src/renderer/deepseek_v41/tests.rs
+++ b/rust/src/chat/src/renderer/deepseek_v41/tests.rs
@@ -165,9 +165,9 @@ fn image_part(uuid: &str) -> ChatContentPart {
 #[test]
 fn maps_reasoning_effort_to_reference_numeric_budget() {
     for (effort, budget) in [
-        (None, 50),
-        (Some(EffortValue::from("low")), 25),
-        (Some(EffortValue::from("high")), 50),
+        (None, 75),
+        (Some(EffortValue::from("low")), 50),
+        (Some(EffortValue::from("high")), 75),
         (Some(EffortValue::from("xhigh")), 75),
         (Some(EffortValue::from("max")), 100),
         (Some(EffortValue::Number(37.into())), 37),
@@ -189,7 +189,7 @@ fn accepts_numeric_template_effort_with_top_level_precedence() {
         (json!(1), 1),
         (json!(42), 42),
         (json!(100), 100),
-        (json!("low"), 25),
+        (json!("low"), 50),
     ] {
         let mut request = request();
         request.chat_options.template_kwargs.insert("reasoning_effort".into(), effort);
@@ -286,11 +286,11 @@ fn system_after_dropped_developer_becomes_leading_system() {
         ],
         ..ChatRequest::for_test()
     };
-    expect!["<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 50 (range 1-100, the higher the value, the more thorough the reasoning)\n\nsys"]
+    expect!["<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 75 (range 1-100, the higher the value, the more thorough the reasoning)\n\nsys"]
         .assert_eq(&render(&request));
 
     request.messages.push(ChatMessage::user("question"));
-    expect!["<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 50 (range 1-100, the higher the value, the more thorough the reasoning)\n\nsys<｜User｜>question<｜Assistant｜><think>"]
+    expect!["<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 75 (range 1-100, the higher the value, the more thorough the reasoning)\n\nsys<｜User｜>question<｜Assistant｜><think>"]
         .assert_eq(&render(&request));
 }
 
@@ -322,7 +322,7 @@ fn last_user_turn_omits_generation_prompt_when_disabled() {
     let mut request = request();
     request.chat_options.generation_prompt_mode = GenerationPromptMode::NoGenerationPrompt;
 
-    expect!["<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 50 (range 1-100, the higher the value, the more thorough the reasoning)\n\n<｜User｜>question"]
+    expect!["<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 75 (range 1-100, the higher the value, the more thorough the reasoning)\n\n<｜User｜>question"]
         .assert_eq(&render(&request));
 }
 
diff --git a/tests/tokenizers_/fixtures/deepseek_v41/test_output_1.txt b/tests/tokenizers_/fixtures/deepseek_v41/test_output_1.txt
index 0897086688..a41d88e924 100644
--- a/tests/tokenizers_/fixtures/deepseek_v41/test_output_1.txt
+++ b/tests/tokenizers_/fixtures/deepseek_v41/test_output_1.txt
@@ -1,4 +1,4 @@
-<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 50 (range 1-100, the higher the value, the more thorough the reasoning)
+<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 75 (range 1-100, the higher the value, the more thorough the reasoning)
 
 You are a helpful assistant.
 
diff --git a/tests/tokenizers_/fixtures/deepseek_v41/test_output_2.txt b/tests/tokenizers_/fixtures/deepseek_v41/test_output_2.txt
index 4e93ce2cbb..fa481ca5cd 100644
--- a/tests/tokenizers_/fixtures/deepseek_v41/test_output_2.txt
+++ b/tests/tokenizers_/fixtures/deepseek_v41/test_output_2.txt
@@ -1,3 +1,3 @@
-<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 50 (range 1-100, the higher the value, the more thorough the reasoning)
+<｜begin▁of▁sentence｜><｜System｜>Reasoning Effort: 75 (range 1-100, the higher the value, the more thorough the reasoning)
 
 You are a helpful assistant.<｜User｜>Hello<｜Assistant｜></think>Hi there! How can I help you?<｜end▁of▁sentence｜><｜User｜>What is the capital of France?<｜Assistant｜><think>The user asks about the capital of France. It is Paris.</think>The capital of France is Paris.<｜end▁of▁sentence｜>
\ No newline at end of file
diff --git a/tests/tokenizers_/test_deepseek_v41.py b/tests/tokenizers_/test_deepseek_v41.py
index 13c0375fbb..10c66f23b0 100644
--- a/tests/tokenizers_/test_deepseek_v41.py
+++ b/tests/tokenizers_/test_deepseek_v41.py
@@ -35,9 +35,9 @@ def test_reference_encoder_fixtures(case_id):
 @pytest.mark.parametrize(
     ("effort", "budget"),
     [
-        (None, 50),
-        ("low", 25),
-        ("high", 50),
+        (None, 75),
+        ("low", 50),
+        ("high", 75),
         ("xhigh", 75),
         ("max", 100),
         (1, 1),
@@ -138,7 +138,7 @@ def test_top_level_effort_overrides_template_effort():
         chat_template_kwargs={"reasoning_effort": 100},
     )
     kwargs = request.build_chat_params(None, "auto").get_apply_chat_template_kwargs()
-    assert "Reasoning Effort: 25 " in render(request.messages, **kwargs)
+    assert "Reasoning Effort: 50 " in render(request.messages, **kwargs)
 
 
 def test_encode_uses_one_bos_and_forwards_truncation():
diff --git a/vllm/tokenizers/deepseek_v41_encoding.py b/vllm/tokenizers/deepseek_v41_encoding.py
index 841de385cb..6851d42f91 100644
--- a/vllm/tokenizers/deepseek_v41_encoding.py
+++ b/vllm/tokenizers/deepseek_v41_encoding.py
@@ -181,8 +181,8 @@ REASONING_EFFORT_TEMPLATE = (
     "(range 1-100, the higher the value, the more thorough the reasoning)\n\n"
 )
 REASONING_EFFORT_MAPPINGS: Dict[str, int] = {
-    "low": 25,
-    "high": 50,
+    "low": 50,
+    "high": 75,
     "xhigh": 75,
     "max": 100,
 }