diff --git a/web-app/src/containers/ChatInput.tsx b/web-app/src/containers/ChatInput.tsx
index 4943b71fb..3b8126e0b 100644
--- a/web-app/src/containers/ChatInput.tsx
+++ b/web-app/src/containers/ChatInput.tsx
@@ -34,6 +34,7 @@ import DropdownModelProvider from '@/containers/DropdownModelProvider'
 import { ModelLoader } from '@/containers/loaders/ModelLoader'
 import DropdownToolsAvailable from '@/containers/DropdownToolsAvailable'
 import { getConnectedServers } from '@/services/mcp'
+import { checkMmprojExists } from '@/services/models'
 
 type ChatInputProps = {
   className?: string
@@ -71,6 +72,7 @@ const ChatInput = ({ model, className, initialMessage }: ChatInputProps) => {
   >([])
   const [connectedServers, setConnectedServers] = useState<string[]>([])
   const [isDragOver, setIsDragOver] = useState(false)
+  const [hasMmproj, setHasMmproj] = useState(false)
 
   // Check for connected MCP servers
   useEffect(() => {
@@ -92,6 +94,25 @@ const ChatInput = ({ model, className, initialMessage }: ChatInputProps) => {
     return () => clearInterval(intervalId)
   }, [])
 
+  // Check for mmproj existence when model changes
+  useEffect(() => {
+    const checkMmprojSupport = async () => {
+      if (selectedModel?.id) {
+        try {
+          const exists = await checkMmprojExists(selectedModel.id)
+          setHasMmproj(exists)
+        } catch (error) {
+          console.error('Error checking mmproj:', error)
+          setHasMmproj(false)
+        }
+      } else {
+        setHasMmproj(false)
+      }
+    }
+
+    checkMmprojSupport()
+  }, [selectedModel?.id])
+
   // Check if there are active MCP servers
   const hasActiveMCPServers = connectedServers.length > 0 || tools.length > 0
 
@@ -283,7 +304,10 @@ const ChatInput = ({ model, className, initialMessage }: ChatInputProps) => {
   const handleDragEnter = (e: React.DragEvent) => {
     e.preventDefault()
     e.stopPropagation()
-    setIsDragOver(true)
+    // Only allow drag if model supports mmproj
+    if (hasMmproj) {
+      setIsDragOver(true)
+    }
   }
 
   const handleDragLeave = (e: React.DragEvent) => {
@@ -301,7 +325,9 @@ const ChatInput = ({ model, className, initialMessage }: ChatInputProps) => {
     e.preventDefault()
     e.stopPropagation()
     // Ensure drag state is maintained during drag over
-    setIsDragOver(true)
+    if (hasMmproj) {
+      setIsDragOver(true)
+    }
   }
 
   const handleDrop = (e: React.DragEvent) => {
@@ -309,6 +335,11 @@ const ChatInput = ({ model, className, initialMessage }: ChatInputProps) => {
     e.stopPropagation()
     setIsDragOver(false)
 
+    // Only allow drop if model supports mmproj
+    if (!hasMmproj) {
+      return
+    }
+
     // Check if dataTransfer exists (it might not in some Tauri scenarios)
     if (!e.dataTransfer) {
       console.warn('No dataTransfer available in drop event')
@@ -332,6 +363,11 @@ const ChatInput = ({ model, className, initialMessage }: ChatInputProps) => {
     const clipboardItems = e.clipboardData?.items
     if (!clipboardItems) return
 
+    // Only allow paste if model supports mmproj
+    if (!hasMmproj) {
+      return
+    }
+
     const imageItems = Array.from(clipboardItems).filter((item) =>
       item.type.startsWith('image/')
     )
@@ -390,11 +426,11 @@ const ChatInput = ({ model, className, initialMessage }: ChatInputProps) => {
               isFocused && 'ring-1 ring-main-view-fg/10',
               isDragOver && 'ring-2 ring-accent border-accent'
             )}
-            data-drop-zone="true"
-            onDragEnter={handleDragEnter}
-            onDragLeave={handleDragLeave}
-            onDragOver={handleDragOver}
-            onDrop={handleDrop}
+            data-drop-zone={hasMmproj ? "true" : undefined}
+            onDragEnter={hasMmproj ? handleDragEnter : undefined}
+            onDragLeave={hasMmproj ? handleDragLeave : undefined}
+            onDragOver={hasMmproj ? handleDragOver : undefined}
+            onDrop={hasMmproj ? handleDrop : undefined}
           >
             {uploadedFiles.length > 0 && (
               <div className="flex gap-3 items-center p-2 pb-0">
@@ -455,7 +491,7 @@ const ChatInput = ({ model, className, initialMessage }: ChatInputProps) => {
                   // When Shift+Enter is pressed, a new line is added (default behavior)
                 }
               }}
-              onPaste={handlePaste}
+              onPaste={hasMmproj ? handlePaste : undefined}
               placeholder={t('common:placeholder.chatInput')}
               autoFocus
               spellCheck={spellCheckChatInput}
@@ -489,7 +525,7 @@ const ChatInput = ({ model, className, initialMessage }: ChatInputProps) => {
                   />
                 )}
                 {/* File attachment - show only for models with mmproj */}
-                {selectedModel?.settings?.offload_mmproj && (
+                {hasMmproj && (
                   <div
                     className="h-6 p-1 ml-1 flex items-center justify-center rounded-sm hover:bg-main-view-fg/10 transition-all duration-200 ease-in-out gap-1"
                     onClick={handleAttachmentClick}
diff --git a/web-app/src/containers/DropdownModelProvider.tsx b/web-app/src/containers/DropdownModelProvider.tsx
index e4db8d63f..ac2bbc535 100644
--- a/web-app/src/containers/DropdownModelProvider.tsx
+++ b/web-app/src/containers/DropdownModelProvider.tsx
@@ -19,7 +19,7 @@ import { localStorageKey } from '@/constants/localStorage'
 import { useTranslation } from '@/i18n/react-i18next-compat'
 import { useFavoriteModel } from '@/hooks/useFavoriteModel'
 import { predefinedProviders } from '@/consts/providers'
-import { checkMmprojExists } from '@/services/models'
+import { checkMmprojExistsAndUpdateOffloadMMprojSetting } from '@/services/models'
 
 type DropdownModelProviderProps = {
   model?: ThreadModel
@@ -102,7 +102,7 @@ const DropdownModelProvider = ({
         }
         // Check mmproj existence for llamacpp models
         if (model?.provider === 'llamacpp') {
-          await checkMmprojExists(
+          await checkMmprojExistsAndUpdateOffloadMMprojSetting(
             model.id as string,
             updateProvider,
             getProviderByName
@@ -114,7 +114,7 @@ const DropdownModelProvider = ({
         if (lastUsed && checkModelExists(lastUsed.provider, lastUsed.model)) {
           selectModelProvider(lastUsed.provider, lastUsed.model)
           if (lastUsed.provider === 'llamacpp') {
-            await checkMmprojExists(
+            await checkMmprojExistsAndUpdateOffloadMMprojSetting(
               lastUsed.model,
               updateProvider,
               getProviderByName
@@ -282,7 +282,7 @@ const DropdownModelProvider = ({
 
       // Check mmproj existence for llamacpp models
       if (searchableModel.provider.provider === 'llamacpp') {
-        await checkMmprojExists(
+        await checkMmprojExistsAndUpdateOffloadMMprojSetting(
           searchableModel.model.id,
           updateProvider,
           getProviderByName
diff --git a/web-app/src/services/models.ts b/web-app/src/services/models.ts
index 9829663f4..729f10e3e 100644
--- a/web-app/src/services/models.ts
+++ b/web-app/src/services/models.ts
@@ -361,7 +361,7 @@ export const isToolSupported = async (modelId: string): Promise<boolean> => {
  * @param getProviderByName - Function to get provider by name
  * @returns Promise<{exists: boolean, settingsUpdated: boolean}> - exists: true if mmproj.gguf exists, settingsUpdated: true if settings were modified
  */
-export const checkMmprojExists = async (
+export const checkMmprojExistsAndUpdateOffloadMMprojSetting = async (
   modelId: string,
   updateProvider?: (providerName: string, data: Partial<ModelProvider>) => void,
   getProviderByName?: (providerName: string) => ModelProvider | undefined
@@ -465,3 +465,25 @@ export const checkMmprojExists = async (
   }
   return { exists: false, settingsUpdated }
 }
+
+/**
+ * Checks if mmproj.gguf file exists for a given model ID in the llamacpp provider.
+ * If mmproj.gguf exists, adds offload_mmproj setting with value true.
+ * @param modelId - The model ID to check for mmproj.gguf
+ * @param updateProvider - Function to update the provider state
+ * @param getProviderByName - Function to get provider by name
+ * @returns Promise<{exists: boolean, settingsUpdated: boolean}> - exists: true if mmproj.gguf exists, settingsUpdated: true if settings were modified
+ */
+export const checkMmprojExists = async (modelId: string): Promise<boolean> => {
+  try {
+    const engine = getEngine('llamacpp') as AIEngine & {
+      checkMmprojExists?: (id: string) => Promise<boolean>
+    }
+    if (engine && typeof engine.checkMmprojExists === 'function') {
+      return await engine.checkMmprojExists(modelId)
+    }
+  } catch (error) {
+    console.error(`Error checking mmproj for model ${modelId}:`, error)
+  }
+  return false
+}