fix(models): qwen-mt-flash supports text delta (#11448)

refactor(models): improve text delta support check for qwen-mt models

Replace direct qwen-mt model check with regex pattern matching
Add comprehensive test cases for isNotSupportTextDeltaModel
Update all references to use new function name

src/renderer/src/config/models/__tests__/utils.test.ts

@@ -24,9 +24,9 @@ import {
   isGemmaModel,
   isGenerateImageModels,
   isMaxTemperatureOneModel,
-  isNotSupportedTextDelta,
   isNotSupportSystemMessageModel,
   isNotSupportTemperatureAndTopP,
+  isNotSupportTextDeltaModel,
   isSupportedFlexServiceTier,
   isSupportedModel,
   isSupportFlexServiceTierModel,
@@ -215,12 +215,51 @@ describe('model utils', () => {
 
   it('aggregates boolean helpers based on regex rules', () => {
     expect(isAnthropicModel(createModel({ id: 'claude-3.5' }))).toBe(true)
-    expect(isQwenMTModel(createModel({ id: 'qwen-mt-large' }))).toBe(true)
+    expect(isQwenMTModel(createModel({ id: 'qwen-mt-plus' }))).toBe(true)
-    expect(isNotSupportedTextDelta(createModel({ id: 'qwen-mt-large' }))).toBe(true)
     expect(isNotSupportSystemMessageModel(createModel({ id: 'gemma-moe' }))).toBe(true)
     expect(isOpenAIOpenWeightModel(createModel({ id: 'gpt-oss-free' }))).toBe(true)
   })
 
+  describe('isNotSupportedTextDelta', () => {
+    it('returns true for qwen-mt-turbo and qwen-mt-plus models', () => {
+      // qwen-mt series that don't support text delta
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen-mt-turbo' }))).toBe(true)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen-mt-plus' }))).toBe(true)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'Qwen-MT-Turbo' }))).toBe(true)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'QWEN-MT-PLUS' }))).toBe(true)
+    })
+
+    it('returns false for qwen-mt-flash and other models', () => {
+      // qwen-mt-flash supports text delta
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen-mt-flash' }))).toBe(false)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'Qwen-MT-Flash' }))).toBe(false)
+
+      // Legacy qwen models without mt prefix (support text delta)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen-turbo' }))).toBe(false)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen-plus' }))).toBe(false)
+
+      // Other qwen models
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen-max' }))).toBe(false)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen2.5-72b' }))).toBe(false)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen-vl-plus' }))).toBe(false)
+
+      // Non-qwen models
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'gpt-4o' }))).toBe(false)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'claude-3.5' }))).toBe(false)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'glm-4-plus' }))).toBe(false)
+    })
+
+    it('handles models with version suffixes', () => {
+      // qwen-mt models with version suffixes
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen-mt-turbo-1201' }))).toBe(true)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen-mt-plus-0828' }))).toBe(true)
+
+      // Legacy qwen models with version suffixes (support text delta)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen-turbo-0828' }))).toBe(false)
+      expect(isNotSupportTextDeltaModel(createModel({ id: 'qwen-plus-latest' }))).toBe(false)
+    })
+  })
+
   it('evaluates GPT-5 family helpers', () => {
     expect(isGPT5SeriesModel(createModel({ id: 'gpt-5-preview' }))).toBe(true)
     expect(isGPT5SeriesModel(createModel({ id: 'gpt-5.1-preview' }))).toBe(false)

src/renderer/src/config/models/utils.ts

@@ -111,8 +111,11 @@ export const isAnthropicModel = (model?: Model): boolean => {
   return modelId.startsWith('claude')
 }
 
-export const isNotSupportedTextDelta = (model: Model): boolean => {
+const NOT_SUPPORT_TEXT_DELTA_MODEL_REGEX = new RegExp('qwen-mt-(?:turbo|plus)')
-  return isQwenMTModel(model)
+
+export const isNotSupportTextDeltaModel = (model: Model): boolean => {
+  const modelId = getLowerBaseModelName(model.id)
+  return NOT_SUPPORT_TEXT_DELTA_MODEL_REGEX.test(modelId)
 }
 
 export const isNotSupportSystemMessageModel = (model: Model): boolean => {

src/renderer/src/pages/settings/ProviderSettings/ModelList/AddModelPopup.tsx

@@ -1,5 +1,5 @@
 import { TopView } from '@renderer/components/TopView'
-import { isNotSupportedTextDelta } from '@renderer/config/models'
+import { isNotSupportTextDeltaModel } from '@renderer/config/models'
 import { useProvider } from '@renderer/hooks/useProvider'
 import type { Model, Provider } from '@renderer/types'
 import { getDefaultGroupName } from '@renderer/utils'
@@ -58,7 +58,7 @@ const PopupContainer: React.FC<Props> = ({ title, provider, resolve }) => {
       group: values.group ?? getDefaultGroupName(id)
     }
 
-    addModel({ ...model, supported_text_delta: !isNotSupportedTextDelta(model) })
+    addModel({ ...model, supported_text_delta: !isNotSupportTextDeltaModel(model) })
 
     return true
   }

src/renderer/src/pages/settings/ProviderSettings/ModelList/ManageModelsPopup.tsx

@@ -6,7 +6,7 @@ import {
   groupQwenModels,
   isEmbeddingModel,
   isFunctionCallingModel,
-  isNotSupportedTextDelta,
+  isNotSupportTextDeltaModel,
   isReasoningModel,
   isRerankModel,
   isVisionModel,
@@ -136,13 +136,13 @@ const PopupContainer: React.FC<Props> = ({ providerId, resolve }) => {
             addModel({
               ...model,
               endpoint_type: endpointTypes.includes('image-generation') ? 'image-generation' : endpointTypes[0],
-              supported_text_delta: !isNotSupportedTextDelta(model)
+              supported_text_delta: !isNotSupportTextDeltaModel(model)
             })
           } else {
             NewApiAddModelPopup.show({ title: t('settings.models.add.add_model'), provider, model })
           }
         } else {
-          addModel({ ...model, supported_text_delta: !isNotSupportedTextDelta(model) })
+          addModel({ ...model, supported_text_delta: !isNotSupportTextDeltaModel(model) })
         }
       }
     },

src/renderer/src/pages/settings/ProviderSettings/ModelList/NewApiAddModelPopup.tsx

@@ -1,6 +1,6 @@
 import { TopView } from '@renderer/components/TopView'
 import { endpointTypeOptions } from '@renderer/config/endpointTypes'
-import { isNotSupportedTextDelta } from '@renderer/config/models'
+import { isNotSupportTextDeltaModel } from '@renderer/config/models'
 import { useDynamicLabelWidth } from '@renderer/hooks/useDynamicLabelWidth'
 import { useProvider } from '@renderer/hooks/useProvider'
 import type { EndpointType, Model, Provider } from '@renderer/types'
@@ -65,7 +65,7 @@ const PopupContainer: React.FC<Props> = ({ title, provider, resolve, model, endp
       endpoint_type: isNewApiProvider(provider) ? values.endpointType : undefined
     }
 
-    addModel({ ...model, supported_text_delta: !isNotSupportedTextDelta(model) })
+    addModel({ ...model, supported_text_delta: !isNotSupportTextDeltaModel(model) })
 
     return true
   }

src/renderer/src/pages/settings/ProviderSettings/ModelList/NewApiBatchAddModelPopup.tsx

@@ -1,6 +1,6 @@
 import { TopView } from '@renderer/components/TopView'
 import { endpointTypeOptions } from '@renderer/config/endpointTypes'
-import { isNotSupportedTextDelta } from '@renderer/config/models'
+import { isNotSupportTextDeltaModel } from '@renderer/config/models'
 import { useDynamicLabelWidth } from '@renderer/hooks/useDynamicLabelWidth'
 import { useProvider } from '@renderer/hooks/useProvider'
 import type { EndpointType, Model, Provider } from '@renderer/types'
@@ -48,7 +48,7 @@ const PopupContainer: React.FC<Props> = ({ title, provider, resolve, batchModels
       addModel({
         ...model,
         endpoint_type: values.endpointType,
-        supported_text_delta: !isNotSupportedTextDelta(model)
+        supported_text_delta: !isNotSupportTextDeltaModel(model)
       })
     })
     return true

src/renderer/src/store/migrate.ts

@@ -5,7 +5,7 @@ import { DEFAULT_MIN_APPS } from '@renderer/config/minapps'
 import {
   glm45FlashModel,
   isFunctionCallingModel,
-  isNotSupportedTextDelta,
+  isNotSupportTextDeltaModel,
   SYSTEM_MODELS
 } from '@renderer/config/models'
 import { BUILTIN_OCR_PROVIDERS, BUILTIN_OCR_PROVIDERS_MAP, DEFAULT_OCR_PROVIDER } from '@renderer/config/ocr'
@@ -1988,7 +1988,7 @@ const migrateConfig = {
       const updateModelTextDelta = (model?: Model) => {
         if (model) {
           model.supported_text_delta = true
-          if (isNotSupportedTextDelta(model)) {
+          if (isNotSupportTextDeltaModel(model)) {
             model.supported_text_delta = false
           }
         }