diff --git a/src/lib/components/chat/Chat.svelte b/src/lib/components/chat/Chat.svelte
index 686613cca9..7a33c5163b 100644
--- a/src/lib/components/chat/Chat.svelte
+++ b/src/lib/components/chat/Chat.svelte
@@ -3554,6 +3554,12 @@
 				scrollToBottom();
 			}
 
+			// Single-model turns follow the current selection; side-by-side turns regenerate the clicked column.
+			const isSideBySideTurn = (userMessage.models ?? selectedModels).length > 1;
+			if (!isSideBySideTurn) {
+				userMessage.models = selectedModels;
+			}
+
 			await sendMessage(history, userMessage.id, {
 				...(suggestionPrompt
 					? {
@@ -3561,9 +3567,8 @@
 							regenerationPrompt: suggestionPrompt
 						}
 					: {}),
-				...((userMessage?.models ?? [...selectedModels]).length > 1
+				...(isSideBySideTurn
 					? {
-							// If multiple models are selected, use the model from the message
 							modelId: message.model,
 							modelIdx: message.modelIdx
 						}