diff --git a/components/multimodal-input.tsx b/components/multimodal-input.tsx
index 3cde3e157..b900665d5 100644
--- a/components/multimodal-input.tsx
+++ b/components/multimodal-input.tsx
@@ -201,9 +201,11 @@ function PureMultimodalInput({
   };
 
   const fileInputRef = useRef<HTMLInputElement>(null);
+  const videoSlotInputRefs = useRef<Array<HTMLInputElement | null>>([]);
   const [uploadQueue, setUploadQueue] = useState<string[]>([]);
   const [isDragging, setIsDragging] = useState(false);
   const [draggedIndex, setDraggedIndex] = useState<number | null>(null);
+  const [videoSlotUploading, setVideoSlotUploading] = useState<number | null>(null);
 
   const submitForm = useCallback(() => {
     window.history.pushState({}, "", `/chat/${chatId}`);
@@ -422,6 +424,60 @@ function PureMultimodalInput({
     [usage]
   );
 
+  const videoFrameSlots = useMemo(() => {
+    if (!isVideoModel || !videoParams) return [] as string[];
+    if (videoParams.mode === "first-last-frame") {
+      return ["首帧", "尾帧"];
+    }
+    if (videoParams.mode === "first-frame") {
+      return ["首帧"];
+    }
+    return [] as string[];
+  }, [isVideoModel, videoParams]);
+
+  const updateAttachmentAtSlot = useCallback(
+    (slotIndex: number, attachment: Attachment | null) => {
+      const slotCount = Math.max(videoFrameSlots.length, 2);
+      setAttachments((current) => {
+        const slots: Array<Attachment | null> = Array.from(
+          { length: slotCount },
+          (_, index) => current[index] ?? null
+        );
+        slots[slotIndex] = attachment;
+        while (slots.length > 0 && !slots[slots.length - 1]) {
+          slots.pop();
+        }
+        return slots.filter((item): item is Attachment => Boolean(item));
+      });
+    },
+    [setAttachments, videoFrameSlots.length]
+  );
+
+  const handleVideoSlotFileChange = useCallback(
+    async (slotIndex: number, event: ChangeEvent<HTMLInputElement>) => {
+      const file = event.target.files?.[0];
+      if (!file) return;
+      if (!file.type.startsWith("image/")) {
+        toast.error("请上传图片文件");
+        event.currentTarget.value = "";
+        return;
+      }
+      setVideoSlotUploading(slotIndex);
+      setUploadQueue((prev) => [...prev, file.name]);
+      try {
+        const uploaded = await uploadFile(file);
+        if (uploaded) {
+          updateAttachmentAtSlot(slotIndex, uploaded as Attachment);
+        }
+      } finally {
+        setVideoSlotUploading(null);
+        setUploadQueue((prev) => prev.filter((name) => name !== file.name));
+        event.currentTarget.value = "";
+      }
+    },
+    [updateAttachmentAtSlot, uploadFile]
+  );
+
   // 🆕 视频模式下的图片数量限制
   const getVideoImageLimit = useCallback(() => {
     if (!isVideoModel || !videoParams) {
@@ -757,6 +813,18 @@ function PureMultimodalInput({
         tabIndex={-1}
         type="file"
       />
+      {videoFrameSlots.map((_, index) => (
+        <input
+          key={`video-slot-input-${index}`}
+          className="hidden"
+          type="file"
+          accept="image/*"
+          onChange={(event) => handleVideoSlotFileChange(index, event)}
+          ref={(element) => {
+            videoSlotInputRefs.current[index] = element;
+          }}
+        />
+      ))}
 
       <PromptInput
         className="rounded-xl border border-border bg-background p-3 shadow-xs transition-all duration-200 focus-within:border-border hover:border-muted-foreground/50"
@@ -769,7 +837,59 @@ function PureMultimodalInput({
           }
         }}
       >
-        {(attachments.length > 0 || uploadQueue.length > 0) && (
+        {videoFrameSlots.length > 0 && (
+          <div className="mb-2 flex flex-row gap-2">
+            {videoFrameSlots.map((label, index) => {
+              const slotAttachment = attachments[index];
+              const disabled = index > 0 && !attachments[index - 1];
+              const isUploading = videoSlotUploading === index;
+              return (
+                <button
+                  key={`video-slot-${label}-${index}`}
+                  type="button"
+                  onClick={() => {
+                    if (disabled || status !== "ready") return;
+                    videoSlotInputRefs.current[index]?.click();
+                  }}
+                  className={cn(
+                    "group relative flex h-24 w-24 shrink-0 items-center justify-center overflow-hidden rounded-xl border bg-muted/30 text-muted-foreground transition-colors",
+                    !disabled && status === "ready" && "cursor-pointer hover:border-primary/60 hover:bg-muted/50",
+                    disabled && "cursor-not-allowed opacity-55"
+                  )}
+                >
+                  {slotAttachment ? (
+                    <>
+                      <img
+                        src={slotAttachment.url}
+                        alt={slotAttachment.name || label}
+                        className="h-full w-full object-cover"
+                      />
+                      <div className="absolute inset-x-0 bottom-0 bg-black/55 px-1 py-0.5 text-center text-[11px] text-white">
+                        {label}
+                      </div>
+                      <div
+                        className="absolute right-1 top-1 rounded-full bg-black/65 px-1 text-[11px] text-white opacity-0 transition-opacity group-hover:opacity-100"
+                        onClick={(event) => {
+                          event.stopPropagation();
+                          updateAttachmentAtSlot(index, null);
+                        }}
+                      >
+                        x
+                      </div>
+                    </>
+                  ) : (
+                    <div className="flex flex-col items-center gap-1">
+                      <span className="text-xl leading-none">+</span>
+                      <span className="text-sm">{isUploading ? "上传中" : label}</span>
+                    </div>
+                  )}
+                </button>
+              );
+            })}
+          </div>
+        )}
+
+        {(attachments.length > 0 || uploadQueue.length > 0) && videoFrameSlots.length === 0 && (
           <div
             className="flex flex-row items-end gap-2 overflow-x-scroll"
             data-testid="attachments-preview"
@@ -884,37 +1004,56 @@ function PureMultimodalInput({
         </div>
         <PromptInputToolbar className="!border-top-0 border-t-0! p-0 shadow-none dark:border-0 dark:border-transparent!">
           <PromptInputTools className="gap-0 sm:gap-0.5 flex-1 overflow-x-auto">
-            <AttachmentsButton
-              fileInputRef={fileInputRef}
-              selectedModelId={selectedModelId}
-              status={status}
-            />
-            <ModelSelectorCompact
-              onModelChange={onModelChange}
-              selectedModelId={selectedModelId}
-              attachments={attachments}
-            />
-            {/* 🆕 视频参数栏（内嵌在模型选择器后面，同一行） */}
-            {isVideoModel && onVideoParamsChange && (
-              <VideoParamsBar
-                key={`video-params-${selectedModelId}-${isVideoModel}`}
-                modelName={videoModelName || "视频 3.0"}
-                initialParams={videoParams || undefined}
-                onParamsChange={onVideoParamsChange}
-                inline={true}
-                providerType={videoProviderType}
-              />
-            )}
-            {/* 🆕 图片参数栏（内嵌在模型选择器后面，同一行） */}
-            {isImageModel && onImageParamsChange && (
-              <ImageParamsBar
-                key={`image-params-${selectedModelId}-${isImageModel}`}
-                modelName={imageModelName || "Gemini 图片生成"}
-                initialParams={imageParams || undefined}
-                onParamsChange={onImageParamsChange}
-                inline={true}
-                providerType={imageProviderType}
-              />
+            {isVideoModel ? (
+              <>
+                <Button
+                  type="button"
+                  variant="ghost"
+                  className="h-8 rounded-full border border-blue-500 bg-blue-50 px-3 text-blue-600 hover:bg-blue-100"
+                >
+                  <Video className="mr-1 h-4 w-4" />
+                  <span className="text-sm font-medium">视频</span>
+                </Button>
+                {onVideoParamsChange && (
+                  <VideoParamsBar
+                    key={`video-params-${selectedModelId}-${isVideoModel}`}
+                    modelName={videoModelName || "视频 3.0"}
+                    initialParams={videoParams || undefined}
+                    onParamsChange={onVideoParamsChange}
+                    inline={true}
+                    providerType={videoProviderType}
+                  />
+                )}
+                <ModelSelectorCompact
+                  onModelChange={onModelChange}
+                  selectedModelId={selectedModelId}
+                  attachments={attachments}
+                  avatarOnly={true}
+                />
+              </>
+            ) : (
+              <>
+                <AttachmentsButton
+                  fileInputRef={fileInputRef}
+                  selectedModelId={selectedModelId}
+                  status={status}
+                />
+                <ModelSelectorCompact
+                  onModelChange={onModelChange}
+                  selectedModelId={selectedModelId}
+                  attachments={attachments}
+                />
+                {isImageModel && onImageParamsChange && (
+                  <ImageParamsBar
+                    key={`image-params-${selectedModelId}-${isImageModel}`}
+                    modelName={imageModelName || "Gemini 图片生成"}
+                    initialParams={imageParams || undefined}
+                    onParamsChange={onImageParamsChange}
+                    inline={true}
+                    providerType={imageProviderType}
+                  />
+                )}
+              </>
             )}
           </PromptInputTools>
 
@@ -1007,10 +1146,12 @@ function PureModelSelectorCompact({
   selectedModelId,
   onModelChange,
   attachments,
+  avatarOnly = false,
 }: {
   selectedModelId: string;
   onModelChange?: (modelId: string) => void;
   attachments: Attachment[];
+  avatarOnly?: boolean;
 }) {
   const [optimisticModelId, setOptimisticModelId] = useState(selectedModelId);
 
@@ -1018,6 +1159,12 @@ function PureModelSelectorCompact({
   const { data: dynamicModelsData, isLoading } = useSWR<{
     models: DynamicModel[];
     defaultModelId: string | null;
+    agentModel?: {
+      id: string;
+      displayName: string;
+      avatarUrl?: string | null;
+      providerType: string;
+    } | null;
   }>("/api/models", fetcher);
 
   // 获取站点设置
@@ -1064,7 +1211,7 @@ function PureModelSelectorCompact({
     id: "auto",
     modelId: "auto",
     displayName: "Agent模式",
-    avatarUrl: null,
+    avatarUrl: dynamicModelsData?.agentModel?.avatarUrl || null,
     description: "根据您的意图自动选择最合适的模型",
     providerType: "system",
     supportsVision: true,
@@ -1122,15 +1269,32 @@ function PureModelSelectorCompact({
   const selectedModel = useMemo(() => {
     const dynamicModel = displayModels.find((m) => m.id === optimisticModelId);
     if (dynamicModel) {
-      return { id: dynamicModel.id, name: dynamicModel.displayName, description: dynamicModel.description };
+      return {
+        id: dynamicModel.id,
+        name: dynamicModel.displayName,
+        description: dynamicModel.description,
+        avatarUrl: dynamicModel.avatarUrl || null,
+      };
     }
     if (displayModels.length > 0) {
-      return { id: displayModels[0].id, name: displayModels[0].displayName, description: displayModels[0].description };
+      return {
+        id: displayModels[0].id,
+        name: displayModels[0].displayName,
+        description: displayModels[0].description,
+        avatarUrl: displayModels[0].avatarUrl || null,
+      };
     }
-    return { id: "", name: "未配置模型", description: null };
+    return { id: "", name: "未配置模型", description: null, avatarUrl: null };
   }, [optimisticModelId, displayModels]);
 
   if (isLoading) {
+    if (avatarOnly) {
+      return (
+        <Button className="h-8 w-8 rounded-full border border-border p-0" variant="ghost" disabled>
+          <CpuIcon size={14} />
+        </Button>
+      );
+    }
     return (
       <Button className="h-8 px-2" variant="ghost" disabled>
         <CpuIcon size={16} />
@@ -1140,6 +1304,13 @@ function PureModelSelectorCompact({
   }
 
   if (displayModels.length === 0) {
+    if (avatarOnly) {
+      return (
+        <Button className="h-8 w-8 rounded-full border border-border p-0" variant="ghost" disabled>
+          <Bot className="h-4 w-4" />
+        </Button>
+      );
+    }
     return (
       <Button className="h-8 px-2" variant="ghost" disabled>
         <CpuIcon size={16} />
@@ -1175,13 +1346,30 @@ function PureModelSelectorCompact({
       value={selectedModel?.id}
     >
       <Trigger asChild>
-        <Button className="h-8 px-2" variant="ghost">
-          <CpuIcon size={16} />
-          <span className="hidden font-medium text-xs sm:block">
-            {selectedModel?.name}
-          </span>
-          <ChevronDownIcon size={16} />
-        </Button>
+        {avatarOnly ? (
+          <Button
+            className="h-8 w-8 rounded-full border border-border p-0 hover:bg-accent/60"
+            variant="ghost"
+          >
+            {selectedModel?.avatarUrl ? (
+              <img
+                src={selectedModel.avatarUrl}
+                alt={selectedModel.name}
+                className="h-7 w-7 rounded-full object-cover"
+              />
+            ) : (
+              <Bot className="h-4 w-4" />
+            )}
+          </Button>
+        ) : (
+          <Button className="h-8 px-2" variant="ghost">
+            <CpuIcon size={16} />
+            <span className="hidden font-medium text-xs sm:block">
+              {selectedModel?.name}
+            </span>
+            <ChevronDownIcon size={16} />
+          </Button>
+        )}
       </Trigger>
       <PromptInputModelSelectContent className="!w-[266px] max-h-[372px] overflow-hidden rounded-[22px] border border-[#bfc6cf] bg-[#f2f3f5] p-2 shadow-[0_10px_24px_rgba(15,23,42,0.12)]">
         <div className="max-h-[338px] space-y-0.5 overflow-y-auto pr-1">
@@ -1251,6 +1439,9 @@ const ModelSelectorCompact = memo(
     if (prevProps.selectedModelId !== nextProps.selectedModelId) {
       return false;
     }
+    if (prevProps.avatarOnly !== nextProps.avatarOnly) {
+      return false;
+    }
     if (!equal(prevProps.attachments, nextProps.attachments)) {
       return false;
     }