diff --git a/README.md b/README.md
index 07b9bb8..856d106 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,7 @@ Use these tokens in app arguments:
 - `TOP_P`
 - `TOP_K`
 - `MIN_P`
+- `REASONING_EFFORT`
 - `REASONING_STOP`
 
 Example:
@@ -53,6 +54,11 @@ Example:
 -m MODEL -c CONTEXT_SIZE -t THREADS -ngl GPU_LAYERS --temp TEMP --top-p TOP_P --top-k TOP_K --min-p MIN_P
 ```
 
+For llama-server reasoning controls, configure `--chat-template-kwargs REASONING_EFFORT`.
+The placeholder expands to a single JSON argument such as `{"reasoning_effort": "medium"}`.
+When this placeholder is selected for the current app and model, the model options panel provides
+the presets `none`, `low`, `medium`, `high`, and `xhigh`.
+
 ## Setup
 
 ### lm-launcher.properties
diff --git a/apps.json b/apps.json
index f1142e6..44fbbe4 100644
--- a/apps.json
+++ b/apps.json
@@ -1,663 +1 @@
-{
-  "apps": [
-    {
-      "path": "file:///home/sb/lm/llama.cpp/build/bin/llama-server",
-      "interpreter": null,
-      "arguments": [],
-      "appArguments": [
-        {
-          "argument": "-nkvo",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "--parallel",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "3",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "--reasoning",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "off",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "--spec-type",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "draft-mtp",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "--spec-draft-n-max",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "2",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "-ts",
-          "optional": true,
-          "default_": true
-        },
-        {
-          "argument": "3,2",
-          "optional": true,
-          "default_": true
-        },
-        {
-          "argument": "--no-mmap",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "--jinja",
-          "optional": true,
-          "default_": true
-        },
-        {
-          "argument": "--reasoning-budget",
-          "optional": true,
-          "default_": true
-        },
-        {
-          "argument": "5000",
-          "optional": true,
-          "default_": true
-        },
-        {
-          "argument": "--device",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "ROCm0",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "--split-mode",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "layer",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "row",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "tensor",
-          "optional": true,
-          "default_": false
-        },
-        {
-          "argument": "--host",
-          "optional": true,
-          "default_": true
-        },
-        {
-          "argument": "0.0.0.0",
-          "optional": true,
-          "default_": true
-        },
-        {
-          "argument": "--port",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "5001",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "-t",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "THREADS",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "-ngl",
-          "optional": true,
-          "default_": true
-        },
-        {
-          "argument": "GPU_LAYERS",
-          "optional": true,
-          "default_": true
-        },
-        {
-          "argument": "--ctx-size",
-          "optional": true,
-          "default_": true
-        },
-        {
-          "argument": "CONTEXT_SIZE",
-          "optional": true,
-          "default_": true
-        },
-        {
-          "argument": "-m",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "MODEL",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "--temp",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "TEMP",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "--top-p",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "TOP_P",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "--top-k",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "TOP_K",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "--min-p",
-          "optional": false,
-          "default_": true
-        },
-        {
-          "argument": "MIN_P",
-          "optional": false,
-          "default_": true
-        }
-      ],
-      "modelSettings": [
-        {
-          "modelPath": "/mnt/data/data/lm/models/gguf/xl/MiniMax-M2.7-UD-IQ4_XS-00001-of-00004.gguf",
-          "appArguments": [
-            {
-              "argument": "-nkvo",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--parallel",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "3",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--reasoning",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "off",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--spec-type",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "draft-mtp",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--spec-draft-n-max",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "2",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "-ts",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "3,2",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--no-mmap",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--jinja",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "--reasoning-budget",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "5000",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "--device",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "ROCm0",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--split-mode",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "layer",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "row",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "tensor",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "--host",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "0.0.0.0",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "--port",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "5001",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "-t",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "THREADS",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "-ngl",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "GPU_LAYERS",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "--ctx-size",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "CONTEXT_SIZE",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "-m",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "MODEL",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "--temp",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "TEMP",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "--top-p",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "TOP_P",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "--top-k",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "TOP_K",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "--min-p",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "MIN_P",
-              "optional": false,
-              "default_": true
-            }
-          ]
-        },
-        {
-          "modelPath": "/mnt/data/data/lm/models/gguf/m/Qwen3.6-35B-A3B-UD-Q5_K_XL-mtp.gguf",
-          "appArguments": [
-            {
-              "argument": "-nkvo",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--parallel",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "3",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--reasoning",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "off",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--spec-type",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "draft-mtp",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "--spec-draft-n-max",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "2",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "-ts",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "3,2",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "--no-mmap",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--jinja",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "--reasoning-budget",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "5000",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "--device",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "ROCm0",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--split-mode",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "layer",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "row",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "tensor",
-              "optional": true,
-              "default_": false
-            },
-            {
-              "argument": "--host",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "0.0.0.0",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "--port",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "5001",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "-t",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "THREADS",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "-ngl",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "GPU_LAYERS",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "--ctx-size",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "CONTEXT_SIZE",
-              "optional": true,
-              "default_": true
-            },
-            {
-              "argument": "-m",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "MODEL",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "--temp",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "TEMP",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "--top-p",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "TOP_P",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "--top-k",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "TOP_K",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "--min-p",
-              "optional": false,
-              "default_": true
-            },
-            {
-              "argument": "MIN_P",
-              "optional": false,
-              "default_": true
-            }
-          ]
-        }
-      ]
-    },
-    {
-      "path": "file:///home/sb/lm/SillyTavern/start.sh",
-      "interpreter": null,
-      "arguments": [],
-      "appArguments": [],
-      "modelSettings": [
-        {
-          "modelPath": "/mnt/data/data/lm/models/gguf/xl/MiniMax-M2.7-UD-IQ4_XS-00001-of-00004.gguf",
-          "appArguments": []
-        }
-      ]
-    },
-    {
-      "path": "file:///home/sb/lm/ollama-oai-bridge/start.sh",
-      "interpreter": null,
-      "arguments": [],
-      "appArguments": [
-        {
-          "argument": "-Dbridge.reported-context-offset=30000",
-          "optional": false,
-          "default_": true
-        }
-      ],
-      "modelSettings": []
-    }
-  ]
-}
+{"apps":[{"path":"file:///home/sb/lm/llama.cpp/build/bin/llama-server","interpreter":null,"arguments":[],"appArguments":[{"argument":"-nkvo","optional":true,"default_":false},{"argument":"--parallel","optional":true,"default_":false},{"argument":"3","optional":true,"default_":false},{"argument":"--reasoning","optional":true,"default_":false},{"argument":"off","optional":true,"default_":false},{"argument":"--chat-template-kwargs","optional":true,"default_":false},{"argument":"REASONING_EFFORT","optional":true,"default_":false},{"argument":"--spec-type","optional":true,"default_":false},{"argument":"draft-mtp","optional":true,"default_":false},{"argument":"--spec-draft-n-max","optional":true,"default_":false},{"argument":"2","optional":true,"default_":false},{"argument":"-ts","optional":true,"default_":true},{"argument":"3,2","optional":true,"default_":true},{"argument":"--no-mmap","optional":true,"default_":false},{"argument":"--jinja","optional":true,"default_":true},{"argument":"--reasoning-budget","optional":true,"default_":true},{"argument":"5000","optional":true,"default_":true},{"argument":"--device","optional":true,"default_":false},{"argument":"ROCm0","optional":true,"default_":false},{"argument":"--split-mode","optional":true,"default_":false},{"argument":"layer","optional":true,"default_":false},{"argument":"row","optional":true,"default_":false},{"argument":"tensor","optional":true,"default_":false},{"argument":"--host","optional":true,"default_":true},{"argument":"0.0.0.0","optional":true,"default_":true},{"argument":"--port","optional":false,"default_":true},{"argument":"5001","optional":false,"default_":true},{"argument":"-t","optional":false,"default_":true},{"argument":"THREADS","optional":false,"default_":true},{"argument":"-ngl","optional":true,"default_":true},{"argument":"GPU_LAYERS","optional":true,"default_":true},{"argument":"--ctx-size","optional":true,"default_":true},{"argument":"CONTEXT_SIZE","optional":true,"default_":true},{"argument":"-m","optional":false,"default_":true},{"argument":"MODEL","optional":false,"default_":true},{"argument":"--temp","optional":false,"default_":true},{"argument":"TEMP","optional":false,"default_":true},{"argument":"--top-p","optional":false,"default_":true},{"argument":"TOP_P","optional":false,"default_":true},{"argument":"--top-k","optional":false,"default_":true},{"argument":"TOP_K","optional":false,"default_":true},{"argument":"--min-p","optional":false,"default_":true},{"argument":"MIN_P","optional":false,"default_":true}],"modelSettings":[{"modelPath":"/mnt/data/data/lm/models/gguf/xl/MiniMax-M2.7-UD-IQ4_XS-00001-of-00004.gguf","appArguments":[{"argument":"-nkvo","optional":true,"default_":false},{"argument":"--parallel","optional":true,"default_":false},{"argument":"3","optional":true,"default_":false},{"argument":"--reasoning","optional":true,"default_":false},{"argument":"off","optional":true,"default_":false},{"argument":"--spec-type","optional":true,"default_":false},{"argument":"draft-mtp","optional":true,"default_":false},{"argument":"--spec-draft-n-max","optional":true,"default_":false},{"argument":"2","optional":true,"default_":false},{"argument":"-ts","optional":true,"default_":false},{"argument":"3,2","optional":true,"default_":false},{"argument":"--no-mmap","optional":true,"default_":false},{"argument":"--jinja","optional":true,"default_":true},{"argument":"--reasoning-budget","optional":true,"default_":true},{"argument":"5000","optional":true,"default_":true},{"argument":"--device","optional":true,"default_":false},{"argument":"ROCm0","optional":true,"default_":false},{"argument":"--split-mode","optional":true,"default_":true},{"argument":"layer","optional":true,"default_":false},{"argument":"row","optional":true,"default_":false},{"argument":"tensor","optional":true,"default_":true},{"argument":"--host","optional":true,"default_":true},{"argument":"0.0.0.0","optional":true,"default_":true},{"argument":"--port","optional":false,"default_":true},{"argument":"5001","optional":false,"default_":true},{"argument":"-t","optional":false,"default_":true},{"argument":"THREADS","optional":false,"default_":true},{"argument":"-ngl","optional":true,"default_":true},{"argument":"GPU_LAYERS","optional":true,"default_":true},{"argument":"--ctx-size","optional":true,"default_":true},{"argument":"CONTEXT_SIZE","optional":true,"default_":true},{"argument":"-m","optional":false,"default_":true},{"argument":"MODEL","optional":false,"default_":true},{"argument":"--temp","optional":false,"default_":true},{"argument":"TEMP","optional":false,"default_":true},{"argument":"--top-p","optional":false,"default_":true},{"argument":"TOP_P","optional":false,"default_":true},{"argument":"--top-k","optional":false,"default_":true},{"argument":"TOP_K","optional":false,"default_":true},{"argument":"--min-p","optional":false,"default_":true},{"argument":"MIN_P","optional":false,"default_":true}]},{"modelPath":"/mnt/data/data/lm/models/gguf/m/Qwen3.6-35B-A3B-UD-Q5_K_XL-mtp.gguf","appArguments":[{"argument":"-nkvo","optional":true,"default_":false},{"argument":"--parallel","optional":true,"default_":false},{"argument":"3","optional":true,"default_":false},{"argument":"--reasoning","optional":true,"default_":false},{"argument":"off","optional":true,"default_":false},{"argument":"--spec-type","optional":true,"default_":true},{"argument":"draft-mtp","optional":true,"default_":true},{"argument":"--spec-draft-n-max","optional":true,"default_":true},{"argument":"2","optional":true,"default_":true},{"argument":"-ts","optional":true,"default_":true},{"argument":"3,2","optional":true,"default_":true},{"argument":"--no-mmap","optional":true,"default_":false},{"argument":"--jinja","optional":true,"default_":true},{"argument":"--reasoning-budget","optional":true,"default_":true},{"argument":"5000","optional":true,"default_":true},{"argument":"--device","optional":true,"default_":false},{"argument":"ROCm0","optional":true,"default_":false},{"argument":"--split-mode","optional":true,"default_":false},{"argument":"layer","optional":true,"default_":false},{"argument":"row","optional":true,"default_":false},{"argument":"tensor","optional":true,"default_":false},{"argument":"--host","optional":true,"default_":true},{"argument":"0.0.0.0","optional":true,"default_":true},{"argument":"--port","optional":false,"default_":true},{"argument":"5001","optional":false,"default_":true},{"argument":"-t","optional":false,"default_":true},{"argument":"THREADS","optional":false,"default_":true},{"argument":"-ngl","optional":true,"default_":true},{"argument":"GPU_LAYERS","optional":true,"default_":true},{"argument":"--ctx-size","optional":true,"default_":true},{"argument":"CONTEXT_SIZE","optional":true,"default_":true},{"argument":"-m","optional":false,"default_":true},{"argument":"MODEL","optional":false,"default_":true},{"argument":"--temp","optional":false,"default_":true},{"argument":"TEMP","optional":false,"default_":true},{"argument":"--top-p","optional":false,"default_":true},{"argument":"TOP_P","optional":false,"default_":true},{"argument":"--top-k","optional":false,"default_":true},{"argument":"TOP_K","optional":false,"default_":true},{"argument":"--min-p","optional":false,"default_":true},{"argument":"MIN_P","optional":false,"default_":true}]}]},{"path":"file:///home/sb/lm/SillyTavern/start.sh","interpreter":null,"arguments":[],"appArguments":[],"modelSettings":[{"modelPath":"/mnt/data/data/lm/models/gguf/xl/MiniMax-M2.7-UD-IQ4_XS-00001-of-00004.gguf","appArguments":[]}]},{"path":"file:///home/sb/lm/ollama-oai-bridge/start.sh","interpreter":null,"arguments":[],"appArguments":[{"argument":"-Dbridge.reported-context-offset=30000","optional":false,"default_":true}],"modelSettings":[]}]}
\ No newline at end of file
diff --git a/lm-launcher.jar b/lm-launcher.jar
index f5144be..88165f4 100644
Binary files a/lm-launcher.jar and b/lm-launcher.jar differ
diff --git a/src/de/extio/lm_launcher/App.java b/src/de/extio/lm_launcher/App.java
index 1c46e4c..1cce647 100644
--- a/src/de/extio/lm_launcher/App.java
+++ b/src/de/extio/lm_launcher/App.java
@@ -27,6 +27,7 @@ record App(Path path, Path interpreter, @Deprecated List<String> arguments, List
 			"TOP_P", Model::topPDisplay,
 			"TOP_K", Model::topKDisplay,
 			"MIN_P", Model::minPDisplay,
+			"REASONING_EFFORT", Model::reasoningEffortArgument,
 			"REASONING_STOP", m -> "... thinking budget exceeded, let's answer now.\n");
 	
 	String argumentsToString(final boolean showAll) {
diff --git a/src/de/extio/lm_launcher/Data.java b/src/de/extio/lm_launcher/Data.java
index 516e96a..a53f77e 100644
--- a/src/de/extio/lm_launcher/Data.java
+++ b/src/de/extio/lm_launcher/Data.java
@@ -46,9 +46,9 @@ public class Data {
 		for (int i = 0; i < modelData.models().size(); i++) {
 			final Model model = modelData.models.get(i);
 			if (model.maxContextSize() < model.contextSize() || model.promptTemplate() == null || model.temperature() == null || model.topP() == null || model.topK() == null
-					|| model.minP() == null) {
+					|| model.minP() == null || model.reasoningEffort() == null) {
 				modelData.models.set(i, new Model(model.path(), model.contextSize(), model.maxContextSize(), model.gpuLayers(), model.threads(), model.temperature(), model.topP(), model.topK(),
-						model.minP(), model.promptTemplate(), model.ctime()));
+						model.minP(), model.promptTemplate(), model.reasoningEffort(), model.ctime()));
 			}
 		}
 		sortModels();
@@ -168,7 +168,7 @@ public class Data {
 		catch (final IOException e) {
 			// Use 0 as fallback
 		}
-		return new Model(path, 16000, 128000, 99, 6, Model.DEFAULT_TEMPERATURE, Model.DEFAULT_TOP_P, Model.DEFAULT_TOP_K, Model.DEFAULT_MIN_P, "", ctime);
+		return new Model(path, 16000, 128000, 99, 6, Model.DEFAULT_TEMPERATURE, Model.DEFAULT_TOP_P, Model.DEFAULT_TOP_K, Model.DEFAULT_MIN_P, "", Model.DEFAULT_REASONING_EFFORT, ctime);
 	}
 	
 	static record ModelData(List<Model> models) {
diff --git a/src/de/extio/lm_launcher/LaunchFrame.java b/src/de/extio/lm_launcher/LaunchFrame.java
index c17321f..471bed6 100644
--- a/src/de/extio/lm_launcher/LaunchFrame.java
+++ b/src/de/extio/lm_launcher/LaunchFrame.java
@@ -21,6 +21,7 @@ import javax.swing.DefaultListModel;
 import javax.swing.DefaultListSelectionModel;
 import javax.swing.JButton;
 import javax.swing.JCheckBox;
+import javax.swing.JComboBox;
 import javax.swing.JFileChooser;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
@@ -152,6 +153,10 @@ public class LaunchFrame extends JFrame {
 	JSlider slider_minP;
 	
 	JLabel lblMinPValue;
+
+	JLabel lblReasoningEffort;
+
+	JComboBox<String> comboReasoningEffort;
 	
 	/**
 	 * Create the frame.
@@ -431,6 +436,16 @@ public class LaunchFrame extends JFrame {
 							this.lblMinPValue.setHorizontalAlignment(SwingConstants.CENTER);
 							this.panel_3.add(this.lblMinPValue);
 						}
+						{
+							this.lblReasoningEffort = new JLabel("Reasoning Effort");
+							this.lblReasoningEffort.setHorizontalAlignment(SwingConstants.CENTER);
+							this.panel_3.add(this.lblReasoningEffort);
+						}
+						{
+							this.comboReasoningEffort = new JComboBox<>(Model.REASONING_EFFORTS);
+							this.comboReasoningEffort.setSelectedItem(Model.DEFAULT_REASONING_EFFORT);
+							this.panel_3.add(this.comboReasoningEffort);
+						}
 						{
 							this.verticalStrut = Box.createVerticalStrut(20);
 							this.panel_3.add(this.verticalStrut);
@@ -571,6 +586,7 @@ public class LaunchFrame extends JFrame {
 									LaunchFrame.this.slider_topK.getValue(),
 									LaunchFrame.this.sliderValue(LaunchFrame.this.slider_minP),
 									template.promptTemplate(),
+										(String) LaunchFrame.this.comboReasoningEffort.getSelectedItem(),
 									template.ctime());
 						}
 						
@@ -639,10 +655,12 @@ public class LaunchFrame extends JFrame {
 		this.appArgumentsTableModel.setRowCount(0);
 		final App selectedApp = this.getSelectedApp();
 		if (selectedApp == null) {
+			this.updateReasoningEffortVisibility();
 			return;
 		}
 		selectedApp.argumentsForModel(this.getSelectedModelPath())
 				.forEach(argument -> this.appArgumentsTableModel.addRow(new Object[] { argument }));
+		this.updateReasoningEffortVisibility();
 	}
 	
 	private List<AppArgument> currentTableArguments() {
@@ -671,9 +689,25 @@ public class LaunchFrame extends JFrame {
 		this.slider_topP.setValue(LaunchFrame.doubleToSlider(model.topPValue()));
 		this.slider_topK.setValue(model.topKValue());
 		this.slider_minP.setValue(LaunchFrame.doubleToSlider(model.minPValue()));
+		this.comboReasoningEffort.setSelectedItem(model.reasoningEffort());
 		this.lblPromptTemplate_1.setText(model.promptTemplate() != null && !model.promptTemplate().isEmpty() ? model.promptTemplate() : "-");
 		this.updateSamplingValueLabels();
 	}
+
+	private void updateReasoningEffortVisibility() {
+		boolean selected = false;
+		for (int i = 0; i < this.appArgumentsTableModel.getRowCount(); i++) {
+			final AppArgument argument = (AppArgument) this.appArgumentsTableModel.getValueAt(i, 0);
+			if ("REASONING_EFFORT".equals(argument.argument()) && (!argument.optional() || argument.default_())) {
+				selected = true;
+				break;
+			}
+		}
+		this.lblReasoningEffort.setVisible(selected);
+		this.comboReasoningEffort.setVisible(selected);
+		this.panel_3.revalidate();
+		this.panel_3.repaint();
+	}
 	
 	private void updateSamplingValueLabels() {
 		this.lblTemperatureValue.setText(Model.formatDecimal(this.sliderValue(this.slider_temperature)));
diff --git a/src/de/extio/lm_launcher/Model.java b/src/de/extio/lm_launcher/Model.java
index c33f45a..de82197 100644
--- a/src/de/extio/lm_launcher/Model.java
+++ b/src/de/extio/lm_launcher/Model.java
@@ -3,7 +3,11 @@ package de.extio.lm_launcher;
 import java.math.BigDecimal;
 
 record Model(String path, int contextSize, int maxContextSize, int gpuLayers, int threads, Double temperature, Double topP,
-		Integer topK, Double minP, String promptTemplate, long ctime) {
+		Integer topK, Double minP, String promptTemplate, String reasoningEffort, long ctime) {
+
+	static final String[] REASONING_EFFORTS = { "none", "low", "medium", "high", "xhigh" };
+
+	static final String DEFAULT_REASONING_EFFORT = "medium";
 	
 	static final double DEFAULT_TEMPERATURE = 0.8d;
 	
@@ -39,6 +43,20 @@ record Model(String path, int contextSize, int maxContextSize, int gpuLayers, in
 		topK = sanitizeInt(topK, DEFAULT_TOP_K, MIN_TOP_K, MAX_TOP_K);
 		minP = sanitizeDouble(minP, DEFAULT_MIN_P, MIN_MIN_P, MAX_MIN_P);
 		promptTemplate = promptTemplate == null ? "" : promptTemplate;
+		reasoningEffort = isValidReasoningEffort(reasoningEffort) ? reasoningEffort : DEFAULT_REASONING_EFFORT;
+	}
+
+	String reasoningEffortArgument() {
+		return "{\"reasoning_effort\": \"" + this.reasoningEffort + "\"}";
+	}
+
+	private static boolean isValidReasoningEffort(final String value) {
+		for (final String effort : REASONING_EFFORTS) {
+			if (effort.equals(value)) {
+				return true;
+			}
+		}
+		return false;
 	}
 	
 	double temperatureValue() {
diff --git a/src/de/extio/lm_launcher/ModelPropertiesDialog.java b/src/de/extio/lm_launcher/ModelPropertiesDialog.java
index e573958..301b930 100644
--- a/src/de/extio/lm_launcher/ModelPropertiesDialog.java
+++ b/src/de/extio/lm_launcher/ModelPropertiesDialog.java
@@ -184,7 +184,7 @@ public class ModelPropertiesDialog extends JDialog {
 							ModelPropertiesDialog.this.setVisible(false);
 							modelConsumer.accept(
 									new Model(modelPath, contextSize, maxContextSize, gpuLayers, threads, temperature, topP, topK, minP, ModelPropertiesDialog.this.txtPrompttemplate.getText(),
-											modelToEdit.ctime()));
+										modelToEdit.reasoningEffort(), modelToEdit.ctime()));
 							ModelPropertiesDialog.this.dispose();
 						}
 						catch (final NumberFormatException nfe) {