diff --git a/components/multimodal-input.tsx b/components/multimodal-input.tsx
index 60a39f647d..89b923a9ca 100644
--- a/components/multimodal-input.tsx
+++ b/components/multimodal-input.tsx
@@ -437,12 +437,6 @@ function PureMultimodalInput({
             ))}
           </div>
         )}
-        {pdfUploadsDisabled && (
-          <div className="px-3 text-xs text-muted-foreground">
-            Grok 4 (Fast) does not support PDF uploads. Switch models to send
-            PDFs or upload an image instead.
-          </div>
-        )}
         <div className="flex w-full min-w-0 flex-row gap-2 items-start">
           <PromptInputTextarea
             data-testid="multimodal-input"
@@ -467,6 +461,14 @@ function PureMultimodalInput({
               selectedModelId={selectedModelId}
               pdfUploadsDisabled={pdfUploadsDisabled}
             />
+            {pdfUploadsDisabled && (
+              <span
+                className="text-xs text-muted-foreground hidden sm:inline-block max-w-[60%] truncate"
+                aria-live="polite"
+              >
+                Grok 4 (Fast) does not support PDF uploads. Switch models or upload an image.
+              </span>
+            )}
             <ReasoningSelectorCompact
               reasoningEffort={reasoningEffort}
               setReasoningEffort={setReasoningEffort}