diff --git a/mateclaw-server/src/main/java/vip/mate/wiki/service/WikiTransformationService.java b/mateclaw-server/src/main/java/vip/mate/wiki/service/WikiTransformationService.java
index fecacb2f..30d15445 100644
--- a/mateclaw-server/src/main/java/vip/mate/wiki/service/WikiTransformationService.java
+++ b/mateclaw-server/src/main/java/vip/mate/wiki/service/WikiTransformationService.java
@@ -106,7 +106,9 @@ public class WikiTransformationService {
         entity.setPromptTemplate(input.getPromptTemplate());
         entity.setApplyDefault(Boolean.TRUE.equals(input.getApplyDefault()));
         entity.setEnabled(input.getEnabled() == null ? Boolean.TRUE : input.getEnabled());
-        entity.setModelId(input.getModelId());
+        // Treat negative values as the "clear / use default" sentinel so the
+        // create and update paths accept the same payload from the UI.
+        entity.setModelId(input.getModelId() != null && input.getModelId() < 0 ? null : input.getModelId());
         entity.setOutputTarget(normalizeOutputTarget(input.getOutputTarget()));
         transformationMapper.insert(entity);
         log.info("[WikiTransformation] created id={} name={} kbId={}",
diff --git a/mateclaw-ui/src/i18n/locales/en-US.ts b/mateclaw-ui/src/i18n/locales/en-US.ts
index 687dcd3a..27e11789 100644
--- a/mateclaw-ui/src/i18n/locales/en-US.ts
+++ b/mateclaw-ui/src/i18n/locales/en-US.ts
@@ -1810,6 +1810,9 @@ export default {
       applyDefault: 'Apply by default',
       applyDefaultOn: 'Runs automatically after each ingest completes',
       applyDefaultOff: 'Manual or agent-tool runs only',
+      modelLabel: 'Model',
+      modelDefault: 'Default (KB / system)',
+      modelHelp: 'Falls back to the KB-bound chat model or the system default; once chosen this template always uses the specified model',
       outputTargetLabel: 'Output target',
       outputTargetNone: 'None — output stays in run history',
       outputTargetPage: 'Save as wiki page (searchable / agent-accessible / linkable)',
diff --git a/mateclaw-ui/src/i18n/locales/zh-CN.ts b/mateclaw-ui/src/i18n/locales/zh-CN.ts
index fbda6b1f..98be6463 100644
--- a/mateclaw-ui/src/i18n/locales/zh-CN.ts
+++ b/mateclaw-ui/src/i18n/locales/zh-CN.ts
@@ -1822,6 +1822,9 @@ export default {
       applyDefault: '默认运行',
       applyDefaultOn: '每次新材料完成后自动跑',
       applyDefaultOff: '仅在手动 / Agent 调用时运行',
+      modelLabel: '模型',
+      modelDefault: '默认（KB / 系统默认）',
+      modelHelp: '默认走 KB 绑定模型或系统默认 chat 模型；选定后该模板始终使用指定模型',
       outputTargetLabel: '输出去向',
       outputTargetNone: '不保存（仅留在运行历史）',
       outputTargetPage: '保存为 Wiki 页面（可被搜索 / Agent / 关系图引用）',
diff --git a/mateclaw-ui/src/views/Wiki/components/TransformationsPanel.vue b/mateclaw-ui/src/views/Wiki/components/TransformationsPanel.vue
index 42c87a5d..a336fb1b 100644
--- a/mateclaw-ui/src/views/Wiki/components/TransformationsPanel.vue
+++ b/mateclaw-ui/src/views/Wiki/components/TransformationsPanel.vue
@@ -41,6 +41,9 @@
             <span v-if="tpl.outputTarget === 'page'" class="flag flag--on">
               {{ t('wiki.transformations.outputTargetPageBadge') }}
             </span>
+            <span v-if="tpl.modelId" class="flag flag--scope">
+              {{ modelLabelFor(tpl.modelId) }}
+            </span>
             <span class="flag" :class="{ 'flag--muted': tpl.enabled === false }">
               {{ tpl.enabled === false ? t('wiki.transformations.disabled') : t('wiki.transformations.enabled') }}
             </span>
@@ -154,6 +157,17 @@
             />
           </label>
 
+          <label class="field">
+            <span class="field-label">{{ t('wiki.transformations.modelLabel') }}</span>
+            <select v-model="form.modelId" class="field-input">
+              <option :value="null">{{ t('wiki.transformations.modelDefault') }}</option>
+              <option v-for="m in availableModels" :key="m.id" :value="m.id">
+                {{ m.name }} <span v-if="m.provider"> · {{ m.provider }}</span>
+              </option>
+            </select>
+            <span class="field-hint">{{ t('wiki.transformations.modelHelp') }}</span>
+          </label>
+
           <label class="field">
             <span class="field-label">{{ t('wiki.transformations.prompt') }}</span>
             <textarea
@@ -204,7 +218,7 @@ import { computed, onMounted, reactive, ref, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { ElIcon, ElMessage } from 'element-plus'
 import { Loading, WarningFilled } from '@element-plus/icons-vue'
-import { wikiApi } from '@/api/index'
+import { wikiApi, modelApi } from '@/api/index'
 import { useWikiStore, type WikiRawMaterial } from '@/stores/useWikiStore'
 
 interface WikiTransformation {
@@ -254,6 +268,9 @@ const editorOpen = ref(false)
 const editing = ref<WikiTransformation | null>(null)
 const saving = ref(false)
 const savingRunId = ref<number | null>(null)
+interface ModelOption { id: number; name: string; provider: string; modelName: string }
+const availableModels = ref<ModelOption[]>([])
+
 const form = reactive<{
   name: string
   title: string
@@ -262,6 +279,7 @@ const form = reactive<{
   applyDefault: boolean
   enabled: boolean
   outputTarget: 'none' | 'page'
+  modelId: number | null
 }>({
   name: '',
   title: '',
@@ -270,6 +288,7 @@ const form = reactive<{
   applyDefault: false,
   enabled: true,
   outputTarget: 'none',
+  modelId: null,
 })
 
 const completedRaws = computed<WikiRawMaterial[]>(() =>
@@ -284,6 +303,12 @@ function rawTitleFor(rawId: number | null): string {
   return r?.title || `raw#${rawId}`
 }
 
+function modelLabelFor(modelId: number | null | undefined): string {
+  if (modelId == null) return ''
+  const m = availableModels.value.find((x) => x.id === modelId)
+  return m ? m.name : `model#${modelId}`
+}
+
 function formatTimestamp(iso: string | null): string {
   if (!iso) return '—'
   return new Date(iso).toLocaleString()
@@ -305,7 +330,10 @@ async function loadAll() {
     selectedRawByTemplate.value = Object.fromEntries(
       templates.value.map((t) => [t.id, selectedRawByTemplate.value[t.id] ?? null])
     )
-    await Promise.all(templates.value.map((tpl) => loadRunsFor(tpl.id)))
+    await Promise.all([
+      ensureModelsLoaded(),
+      ...templates.value.map((tpl) => loadRunsFor(tpl.id)),
+    ])
   } catch (e: any) {
     error.value = e?.message ?? String(e)
   } finally {
@@ -322,6 +350,21 @@ async function loadRunsFor(templateId: number) {
   }
 }
 
+async function ensureModelsLoaded() {
+  if (availableModels.value.length > 0) return
+  try {
+    const res: any = await modelApi.listEnabled()
+    availableModels.value = (res?.data || []).map((m: any) => ({
+      id: m.id,
+      name: m.name,
+      provider: m.provider,
+      modelName: m.modelName,
+    }))
+  } catch {
+    // Empty list = picker only offers "default".
+  }
+}
+
 function openCreate() {
   editing.value = null
   form.name = ''
@@ -331,7 +374,9 @@ function openCreate() {
   form.applyDefault = false
   form.enabled = true
   form.outputTarget = 'none'
+  form.modelId = null
   editorOpen.value = true
+  ensureModelsLoaded()
 }
 
 function openEdit(tpl: WikiTransformation) {
@@ -343,7 +388,9 @@ function openEdit(tpl: WikiTransformation) {
   form.applyDefault = tpl.applyDefault
   form.enabled = tpl.enabled !== false
   form.outputTarget = tpl.outputTarget === 'page' ? 'page' : 'none'
+  form.modelId = tpl.modelId ?? null
   editorOpen.value = true
+  ensureModelsLoaded()
 }
 
 function closeEditor() {
@@ -360,6 +407,8 @@ async function onSave() {
   saving.value = true
   try {
     if (editing.value) {
+      // Update path: backend treats `-1` as "clear modelId"; null is skipped.
+      const updateModelId = form.modelId == null ? -1 : form.modelId
       await wikiApi.updateTransformation(editing.value.id, {
         title: form.title,
         description: form.description,
@@ -367,6 +416,7 @@ async function onSave() {
         applyDefault: form.applyDefault,
         enabled: form.enabled,
         outputTarget: form.outputTarget,
+        modelId: updateModelId,
       })
     } else {
       await wikiApi.createTransformation({
@@ -378,6 +428,7 @@ async function onSave() {
         applyDefault: form.applyDefault,
         enabled: form.enabled,
         outputTarget: form.outputTarget,
+        modelId: form.modelId,
       })
     }
     closeEditor()