diff --git a/src/blocks/models/image-segmentation/segment.ts b/src/blocks/models/image-segmentation/segment.ts
index c3742c9..65ec041 100644
--- a/src/blocks/models/image-segmentation/segment.ts
+++ b/src/blocks/models/image-segmentation/segment.ts
@@ -1,3 +1,5 @@
+import Blockly from "blockly";
+
 export let segment = {
   init: function () {
     this.appendValueInput("IMAGE")
@@ -6,6 +8,12 @@ export let segment = {
     this.appendValueInput("MODEL")
       .setCheck("ImageSegmentationModel")
       .appendField("using model");
+    this.appendDummyInput()
+      .appendField("running on")
+      .appendField(
+        new Blockly.FieldDropdown([["GPU", "GPU"], ["CPU", "CPU"]]),
+        "DELEGATE"
+      )
     this.setInputsInline(false);
     this.setOutput(true, "Segment");
     this.setPreviousStatement(false, null);
@@ -20,6 +28,6 @@ export let segment = {
     if (image === "") return "";
     if (model === "") return "";
 
-    return [`await cv.segment(${image}, ${model})`, generator.ORDER_NONE];
+    return [`await cv.segment(${image}, ${model}, "${block.getFieldValue("DELEGATE")}")`, generator.ORDER_NONE];
   }
 };
\ No newline at end of file
diff --git a/src/blocks/models/object-detection/detectObjects.ts b/src/blocks/models/object-detection/detectObjects.ts
index 850e87f..97c67ae 100644
--- a/src/blocks/models/object-detection/detectObjects.ts
+++ b/src/blocks/models/object-detection/detectObjects.ts
@@ -1,3 +1,5 @@
+import Blockly from "blockly";
+
 export let detectObjects = {
   init: function () {
     this.appendValueInput("IMAGE")
@@ -6,6 +8,12 @@ export let detectObjects = {
     this.appendValueInput("MODEL")
       .setCheck("ObjectDetectionModel")
       .appendField("using model");
+    this.appendDummyInput()
+      .appendField("running on")
+      .appendField(
+        new Blockly.FieldDropdown([["GPU", "GPU"], ["CPU", "CPU"]]),
+        "DELEGATE"
+      )
     this.setInputsInline(false);
     this.setOutput(true, "Objects");
     this.setPreviousStatement(false, null);
@@ -20,6 +28,6 @@ export let detectObjects = {
     if (image === "") return "";
     if (model === "") return "";
 
-    return [`await cv.detectObjects(${image}, ${model})`, generator.ORDER_NONE];
+    return [`await cv.detectObjects(${image}, ${model}, "${block.getFieldValue("DELEGATE")}")`, generator.ORDER_NONE];
   }
 };
\ No newline at end of file
diff --git a/src/blocks/models/pose-estimation/detectPose.ts b/src/blocks/models/pose-estimation/detectPose.ts
index b3b2dee..1fb151f 100644
--- a/src/blocks/models/pose-estimation/detectPose.ts
+++ b/src/blocks/models/pose-estimation/detectPose.ts
@@ -1,3 +1,5 @@
+import Blockly from "blockly";
+
 export let detectPose = {
   init: function () {
     this.appendValueInput("IMAGE")
@@ -6,6 +8,12 @@ export let detectPose = {
     this.appendValueInput("MODEL")
       .setCheck("PoseEstimationModel")
       .appendField("using model");
+    this.appendDummyInput()
+      .appendField("running on")
+      .appendField(
+        new Blockly.FieldDropdown([["GPU", "GPU"], ["CPU", "CPU"]]),
+        "DELEGATE"
+      )
     this.setInputsInline(false);
     this.setOutput(true, "Pose");
     this.setPreviousStatement(false, null);
@@ -20,6 +28,6 @@ export let detectPose = {
     if (image === "") return "";
     if (model === "") return "";
 
-    return [`await cv.detectPose(${image}, ${model})`, generator.ORDER_NONE];
+    return [`await cv.detectPose(${image}, ${model}, "${block.getFieldValue("DELEGATE")}")`, generator.ORDER_NONE];
   }
 };
\ No newline at end of file
diff --git a/src/cv/imageSegmentation.ts b/src/cv/imageSegmentation.ts
index 1ca1ba0..32b0dab 100644
--- a/src/cv/imageSegmentation.ts
+++ b/src/cv/imageSegmentation.ts
@@ -59,8 +59,8 @@ export class ImageSegmentation {
 
   }
 
-  public async segment(mp: MediaPipe, image: ImageData, model: ModelData) {
+  public async segment(mp: MediaPipe, image: ImageData, model: ModelData, delegate: string) {
     Debug.write("Segment Image");
-    return await mp.segment(image, model);
+    return await mp.segment(image, model, delegate);
   }
 }
\ No newline at end of file
diff --git a/src/cv/index.ts b/src/cv/index.ts
index 8d3c1a4..0d86d44 100644
--- a/src/cv/index.ts
+++ b/src/cv/index.ts
@@ -120,8 +120,8 @@ export class CV {
    Object Detection
    *************************/
 
-  public async detectObjects(image: ImageData, model: ModelData) {
-    return this.objectDetection.detectObjects(this.mp, image, model);
+  public async detectObjects(image: ImageData, model: ModelData, delegate: string) {
+    return this.objectDetection.detectObjects(this.mp, image, model, delegate);
   }
 
   public async drawBoundingBoxes(result: ObjectDetectorResult) {
@@ -136,8 +136,8 @@ export class CV {
    Image Segmentation
    *************************/
 
-  public async segment(image: ImageData, model: ModelData) {
-    return this.imageSegmentation.segment(this.mp, image, model);
+  public async segment(image: ImageData, model: ModelData, delegate: string) {
+    return this.imageSegmentation.segment(this.mp, image, model, delegate);
   }
 
   public async colorSegment(data: { result: ImageSegmenterResult, category: number }, rgb: number[]) {
@@ -155,8 +155,8 @@ export class CV {
    Pose Detection
    *************************/
 
-  public async detectPose(image: ImageData, model: ModelData) {
-    return await this.poseEstimation.detectPose(this.mp, image, model);
+  public async detectPose(image: ImageData, model: ModelData, delegate: string) {
+    return await this.poseEstimation.detectPose(this.mp, image, model, delegate);
   }
 
   public async drawPose(pose: PoseLandmarkerResult) {
diff --git a/src/cv/mediapipe.ts b/src/cv/mediapipe.ts
index c4fd600..959a3a5 100644
--- a/src/cv/mediapipe.ts
+++ b/src/cv/mediapipe.ts
@@ -29,53 +29,55 @@ export class MediaPipe {
     this.models[path] = model;
   }
 
-  public async detectObjects(image: ImageData, model: ModelData) {
-    let detector = this.getModel(model.path);
+  public async detectObjects(image: ImageData, model: ModelData, delegate) {
+    let detector = this.getModel(`${model.path}_${delegate}`);
     if (!detector) {
       detector = await ObjectDetector.createFromOptions(this.vision, {
         baseOptions: {
           modelAssetPath: model.path,
-          delegate: "GPU",
+          delegate: delegate,
         },
         scoreThreshold: 0.5,
         runningMode: "IMAGE",
       });
-      this.cacheModel(model.path, detector);
+      this.cacheModel(`${model.path}_${delegate}`, detector);
     }
 
     return detector.detect(image);
   }
 
-  public async segment(image: ImageData, model: ModelData) {
-    let segmenter = this.getModel(model.path);
+  public async segment(image: ImageData, model: ModelData, delegate: string) {
+    if (delegate !== 'GPU' && delegate !== 'CPU') return;
+    let segmenter = this.getModel(`${model.path}_${delegate}`);
     if (!segmenter) {
       segmenter = await ImageSegmenter.createFromOptions(this.vision, {
         baseOptions: {
           modelAssetPath: model.path,
-          delegate: 'GPU',
+          delegate: delegate,
         },
         runningMode: 'IMAGE',
         outputCategoryMask: true,
         outputConfidenceMasks: false
       });
-      this.cacheModel(model.path, segmenter);
+      this.cacheModel(`${model.path}_${delegate}`, segmenter);
     }
 
     return { result: segmenter.segment(image), category: model.category };
   }
 
-  public async detectPose(image: ImageData, model: ModelData) {
-    let poseLandmarker = this.getModel(model.path);
+  public async detectPose(image: ImageData, model: ModelData, delegate: string) {
+    if (delegate !== 'GPU' && delegate !== 'CPU') return;
+    let poseLandmarker = this.getModel(`${model.path}_${delegate}`);
     if (!poseLandmarker) {
       poseLandmarker = await PoseLandmarker.createFromOptions(this.vision, {
         baseOptions: {
           modelAssetPath: model.path,
-          delegate: 'GPU',
+          delegate: delegate,
         },
         runningMode: 'IMAGE',
         numPoses: 1,
       });
-      this.cacheModel(model.path, poseLandmarker);
+      this.cacheModel(`${model.path}_${delegate}`, poseLandmarker);
     }
     return poseLandmarker.detect(image);
   }
diff --git a/src/cv/objectDetection.ts b/src/cv/objectDetection.ts
index 14ad2a9..7527961 100644
--- a/src/cv/objectDetection.ts
+++ b/src/cv/objectDetection.ts
@@ -8,9 +8,9 @@ export class ObjectDetection {
   private BOUNDING_BOX_FONT : string = "14px Arial";
   private BOUNDING_BOX_FONT_COLOR : string = "#ffffff";
 
-  public async detectObjects(mediapipe: MediaPipe, image: ImageData, model: ModelData) {
+  public async detectObjects(mediapipe: MediaPipe, image: ImageData, model: ModelData, delegate: string) {
     Debug.write("Detecting objects");
-    return await mediapipe.detectObjects(image, model);
+    return await mediapipe.detectObjects(image, model, delegate);
   }
 
   public async displayBoundingBoxes(canvas: HTMLCanvasElement, result: ObjectDetectorResult) {
diff --git a/src/cv/poseEstimation.ts b/src/cv/poseEstimation.ts
index fd62927..cde16ba 100644
--- a/src/cv/poseEstimation.ts
+++ b/src/cv/poseEstimation.ts
@@ -4,9 +4,9 @@ import { PoseLandmarkerResult } from "@mediapipe/tasks-vision";
 
 export class PoseEstimation {
 
-  public async detectPose(mp: MediaPipe, image: ImageData, model: ModelData) {
+  public async detectPose(mp: MediaPipe, image: ImageData, model: ModelData, delegate: string) {
     Debug.write("Detecting pose");
-    return await mp.detectPose(image, model);
+    return await mp.detectPose(image, model, delegate);
   }
 
   public async displayPose(canvas: HTMLCanvasElement, pose: PoseLandmarkerResult, width: number, height: number) {