diff --git a/src/composables/widgets/useBooleanWidget.ts b/src/composables/widgets/useBooleanWidget.ts
index 5c226a385..51ac7a4f5 100644
--- a/src/composables/widgets/useBooleanWidget.ts
+++ b/src/composables/widgets/useBooleanWidget.ts
@@ -1,6 +1,6 @@
 import type { LGraphNode } from '@comfyorg/litegraph'
 
-import type { InputSpec } from '@/schemas/nodeDefSchema'
+import { type InputSpec, isBooleanInputSpec } from '@/schemas/nodeDefSchema'
 import type { ComfyWidgetConstructor } from '@/scripts/widgets'
 
 export const useBooleanWidget = () => {
@@ -9,7 +9,11 @@ export const useBooleanWidget = () => {
     inputName: string,
     inputData: InputSpec
   ) => {
-    const inputOptions = inputData[1]
+    if (!isBooleanInputSpec(inputData)) {
+      throw new Error(`Invalid input data: ${inputData}`)
+    }
+
+    const inputOptions = inputData[1] ?? {}
     const defaultVal = inputOptions?.default ?? false
     const options = {
       on: inputOptions?.label_on,
@@ -17,7 +21,6 @@ export const useBooleanWidget = () => {
     }
 
     return {
-      // @ts-expect-error InputSpec is not typed correctly
       widget: node.addWidget('toggle', inputName, defaultVal, () => {}, options)
     }
   }
diff --git a/src/composables/widgets/useComboWidget.ts b/src/composables/widgets/useComboWidget.ts
index 6a9cf7b89..684cf1c8f 100644
--- a/src/composables/widgets/useComboWidget.ts
+++ b/src/composables/widgets/useComboWidget.ts
@@ -1,7 +1,11 @@
 import type { LGraphNode } from '@comfyorg/litegraph'
 import type { IComboWidget } from '@comfyorg/litegraph/dist/types/widgets'
 
-import type { InputSpec } from '@/schemas/nodeDefSchema'
+import {
+  type InputSpec,
+  isComboInputSpec,
+  isComboInputSpecV2
+} from '@/schemas/nodeDefSchema'
 import { addValueControlWidgets } from '@/scripts/widgets'
 import type { ComfyWidgetConstructor } from '@/scripts/widgets'
 import { useWidgetStore } from '@/stores/widgetStore'
@@ -14,26 +18,32 @@ export const useComboWidget = () => {
     inputName: string,
     inputData: InputSpec
   ) => {
+    if (!isComboInputSpec(inputData)) {
+      throw new Error(`Invalid input data: ${inputData}`)
+    }
+
     const widgetStore = useWidgetStore()
-    const { remote, options } = inputData[1] || {}
+    const inputOptions = inputData[1] ?? {}
+    const comboOptions =
+      (isComboInputSpecV2(inputData) ? inputOptions.options : inputData[0]) ??
+      []
+
     const defaultValue = widgetStore.getDefaultValue(inputData)
 
     const res = {
       widget: node.addWidget('combo', inputName, defaultValue, () => {}, {
-        // @ts-expect-error InputSpec is not typed correctly
-        values: options ?? inputData[0]
+        values: comboOptions
       }) as IComboWidget
     }
 
-    if (remote) {
+    if (inputOptions.remote) {
       const remoteWidget = useRemoteWidget({
         inputData,
         defaultValue,
         node,
         widget: res.widget
       })
-      // @ts-expect-error InputSpec is not typed correctly
-      if (remote.refresh_button) remoteWidget.addRefreshButton()
+      if (inputOptions.remote.refresh_button) remoteWidget.addRefreshButton()
 
       const origOptions = res.widget.options
       res.widget.options = new Proxy(
@@ -47,7 +57,7 @@ export const useComboWidget = () => {
       )
     }
 
-    if (inputData[1]?.control_after_generate) {
+    if (inputOptions.control_after_generate) {
       res.widget.linkedWidgets = addValueControlWidgets(
         node,
         res.widget,
diff --git a/src/composables/widgets/useStringWidget.ts b/src/composables/widgets/useStringWidget.ts
index a2884d690..411b7596f 100644
--- a/src/composables/widgets/useStringWidget.ts
+++ b/src/composables/widgets/useStringWidget.ts
@@ -1,6 +1,6 @@
 import type { IWidget, LGraphNode } from '@comfyorg/litegraph'
 
-import type { InputSpec } from '@/schemas/nodeDefSchema'
+import { type InputSpec, isStringInputSpec } from '@/schemas/nodeDefSchema'
 import type { ComfyWidgetConstructor } from '@/scripts/widgets'
 import { useSettingStore } from '@/stores/settingStore'
 import type { ComfyApp } from '@/types'
@@ -64,15 +64,20 @@ export const useStringWidget = () => {
     inputData: InputSpec,
     app: ComfyApp
   ) => {
-    const defaultVal = inputData[1]?.default || ''
-    const multiline = !!inputData[1]?.multiline
+    if (!isStringInputSpec(inputData)) {
+      throw new Error(`Invalid input data: ${inputData}`)
+    }
+
+    const inputOptions = inputData[1] ?? {}
+    const defaultVal = inputOptions.default ?? ''
+    const multiline = inputOptions.multiline
 
     let res: { widget: IWidget }
     if (multiline) {
       res = addMultilineWidget(
         node,
         inputName,
-        { defaultVal, ...inputData[1] },
+        { defaultVal, ...inputOptions },
         app
       )
     } else {
@@ -81,9 +86,9 @@ export const useStringWidget = () => {
       }
     }
 
-    if (inputData[1]?.dynamicPrompts != undefined)
-      // @ts-expect-error InputSpec is not typed correctly
-      res.widget.dynamicPrompts = inputData[1].dynamicPrompts
+    if (inputOptions.dynamicPrompts != undefined) {
+      res.widget.dynamicPrompts = inputOptions.dynamicPrompts
+    }
 
     return res
   }
diff --git a/src/schemas/nodeDefSchema.ts b/src/schemas/nodeDefSchema.ts
index c991c40aa..a3e8cb03b 100644
--- a/src/schemas/nodeDefSchema.ts
+++ b/src/schemas/nodeDefSchema.ts
@@ -69,7 +69,8 @@ const zComboInputOptions = zBaseInputOptions.extend({
   image_folder: z.enum(['input', 'output', 'temp']).optional(),
   allow_batch: z.boolean().optional(),
   video_upload: z.boolean().optional(),
-  remote: zRemoteWidgetConfig.optional()
+  remote: zRemoteWidgetConfig.optional(),
+  options: z.array(z.union([z.string(), z.number()])).optional()
 })
 
 const zIntInputSpec = z.tuple([z.literal('INT'), zIntInputOptions.optional()])
diff --git a/src/stores/widgetStore.ts b/src/stores/widgetStore.ts
index b72a52d15..869014f5a 100644
--- a/src/stores/widgetStore.ts
+++ b/src/stores/widgetStore.ts
@@ -21,6 +21,9 @@ export const useWidgetStore = defineStore('widget', () => {
   function getWidgetType(type: string, inputName: string) {
     if (type === 'COMBO') {
       return 'COMBO'
+      /**
+       * @deprecated Group node logic. Remove once group node feature is removed.
+       */
     } else if (`${type}:${inputName}` in widgets.value) {
       return `${type}:${inputName}`
     } else if (type in widgets.value) {
diff --git a/tests-ui/tests/composables/widgets/useComboWidget.test.ts b/tests-ui/tests/composables/widgets/useComboWidget.test.ts
index e8816b063..7cf6e6099 100644
--- a/tests-ui/tests/composables/widgets/useComboWidget.test.ts
+++ b/tests-ui/tests/composables/widgets/useComboWidget.test.ts
@@ -41,7 +41,7 @@ describe('useComboWidget', () => {
       undefined, // default value
       expect.any(Function), // callback
       expect.objectContaining({
-        values: 'COMBO'
+        values: []
       })
     )
     expect(widget).toEqual({