diff --git a/comfy_api_nodes/apis/minimax.py b/comfy_api_nodes/apis/minimax.py
index 117306af0..fcd0a6a38 100644
--- a/comfy_api_nodes/apis/minimax.py
+++ b/comfy_api_nodes/apis/minimax.py
@@ -121,10 +121,9 @@ class MinimaxVideoGenerationResponse(BaseModel):
 
 
 class MiniMaxChatModel(str, Enum):
+    M3 = 'MiniMax-M3'
     M2_7 = 'MiniMax-M2.7'
     M2_7_highspeed = 'MiniMax-M2.7-highspeed'
-    M2_5 = 'MiniMax-M2.5'
-    M2_5_highspeed = 'MiniMax-M2.5-highspeed'
 
 
 class MiniMaxChatMessage(BaseModel):
diff --git a/comfy_api_nodes/nodes_minimax.py b/comfy_api_nodes/nodes_minimax.py
index a75477165..f84968553 100644
--- a/comfy_api_nodes/nodes_minimax.py
+++ b/comfy_api_nodes/nodes_minimax.py
@@ -452,7 +452,7 @@ class MinimaxChatNode(IO.ComfyNode):
             node_id="MinimaxChatNode",
             display_name="MiniMax Chat",
             category="api node/text/MiniMax",
-            description="Generate text responses using MiniMax language models (MiniMax-M2.7).",
+            description="Generate text responses using MiniMax language models (MiniMax-M3).",
             inputs=[
                 IO.String.Input(
                     "prompt",
@@ -463,7 +463,7 @@ class MinimaxChatNode(IO.ComfyNode):
                 IO.Combo.Input(
                     "model",
                     options=MiniMaxChatModel,
-                    default=MiniMaxChatModel.M2_7.value,
+                    default=MiniMaxChatModel.M3.value,
                     tooltip="The MiniMax model to use for text generation.",
                 ),
                 IO.String.Input(
@@ -505,7 +505,12 @@ class MinimaxChatNode(IO.ComfyNode):
                 expr="""
                 (
                   $m := widgets.model;
-                  $contains($m, "highspeed") ? {
+                  $m = "MiniMax-M3" ? {
+                    "type": "list_usd",
+                    "usd": [0.0006, 0.0024],
+                    "format": { "approximate": true, "separator": "-", "suffix": " per 1K tokens" }
+                  }
+                  : $contains($m, "highspeed") ? {
                     "type": "list_usd",
                     "usd": [0.00004, 0.0002],
                     "format": { "approximate": true, "separator": "-", "suffix": " per 1K tokens" }
@@ -524,7 +529,7 @@ class MinimaxChatNode(IO.ComfyNode):
     async def execute(
         cls,
         prompt: str,
-        model: str = MiniMaxChatModel.M2_7.value,
+        model: str = MiniMaxChatModel.M3.value,
         system_prompt: Optional[str] = None,
         max_tokens: int = 4096,
         temperature: float = 0.7,
diff --git a/tests-unit/comfy_api_test/minimax_models_test.py b/tests-unit/comfy_api_test/minimax_models_test.py
index d0fb947bd..e1e4f44fd 100644
--- a/tests-unit/comfy_api_test/minimax_models_test.py
+++ b/tests-unit/comfy_api_test/minimax_models_test.py
@@ -3,6 +3,10 @@ from comfy_api_nodes.apis.minimax import MiniMaxChatModel
 
 
 class TestMiniMaxChatModel:
+    def test_m3_in_model_list(self):
+        """MiniMax-M3 should be available in the chat model enum."""
+        assert MiniMaxChatModel.M3.value == 'MiniMax-M3'
+
     def test_m27_in_model_list(self):
         """MiniMax-M2.7 should be available in the chat model enum."""
         assert MiniMaxChatModel.M2_7.value == 'MiniMax-M2.7'
@@ -11,17 +15,19 @@ class TestMiniMaxChatModel:
         """MiniMax-M2.7-highspeed should be available in the chat model enum."""
         assert MiniMaxChatModel.M2_7_highspeed.value == 'MiniMax-M2.7-highspeed'
 
-    def test_m27_is_first_in_enum(self):
-        """M2.7 should appear before older models in the enum."""
+    def test_m3_is_first_in_enum(self):
+        """M3 should appear before older models in the enum."""
         members = list(MiniMaxChatModel)
-        assert members[0] == MiniMaxChatModel.M2_7
-        assert members[1] == MiniMaxChatModel.M2_7_highspeed
+        assert members[0] == MiniMaxChatModel.M3
+        assert members[1] == MiniMaxChatModel.M2_7
+        assert members[2] == MiniMaxChatModel.M2_7_highspeed
 
-    def test_legacy_models_still_available(self):
-        """Previous M2.5 models should still be available."""
-        assert MiniMaxChatModel.M2_5.value == 'MiniMax-M2.5'
-        assert MiniMaxChatModel.M2_5_highspeed.value == 'MiniMax-M2.5-highspeed'
+    def test_legacy_m25_models_removed(self):
+        """Older M2.5 models should be removed."""
+        values = [m.value for m in MiniMaxChatModel]
+        assert 'MiniMax-M2.5' not in values
+        assert 'MiniMax-M2.5-highspeed' not in values
 
     def test_total_model_count(self):
-        """Should have 4 chat models total (M2.7, M2.7-highspeed, M2.5, M2.5-highspeed)."""
-        assert len(MiniMaxChatModel) == 4
+        """Should have 3 chat models total (M3, M2.7, M2.7-highspeed)."""
+        assert len(MiniMaxChatModel) == 3