From 0d50a179aa5af11d4cafe955e6b2a345eb592dfc Mon Sep 17 00:00:00 2001
From: Your Name <your.email@example.com>
Date: Fri, 19 Dec 2025 12:07:06 +0800
Subject: [PATCH] fix: skip image parts for DeepSeek to avoid unknown variant
 "image_url"

---
 app/api/chat/route.ts | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/app/api/chat/route.ts b/app/api/chat/route.ts
index cc844658..e2374d34 100644
--- a/app/api/chat/route.ts
+++ b/app/api/chat/route.ts
@@ -355,12 +355,17 @@ ${userInputText}
             ]
 
             // Add image parts back
-            for (const filePart of fileParts) {
-                contentParts.push({
-                    type: "image",
-                    image: filePart.url,
-                    mimeType: filePart.mediaType,
-                })
+            const allowImages =
+                typeof modelId === "string" &&
+                !modelId.toLowerCase().includes("deepseek")
+            if (allowImages) {
+                for (const filePart of fileParts) {
+                    contentParts.push({
+                        type: "image",
+                        image: filePart.url,
+                        mimeType: filePart.mediaType,
+                    })
+                }
             }
 
             enhancedMessages = [