diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrModelSeedService.java b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrModelSeedService.java
index 2c4688c5..fb7709e7 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrModelSeedService.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrModelSeedService.java
@@ -178,7 +178,8 @@ public class AihrModelSeedService {
     public ChatResponse chat(ChatRequest request) {
         RuntimeConfig runtime = runtimeConfig(request == null ? null : request.model());
         String prompt = request == null || isBlank(request.prompt()) ? "请给出物业管家处理漏水投诉的第一步。" : request.prompt();
-        String modelName = request == null || isBlank(request.model()) ? runtime.modelName() : request.model();
+        // 运行参数已就绪时以解析出的模型名为准：请求可能带的是 seed 占位模型名（如 gpt-4o-mini），不能透传给供应商
+        String modelName = runtime.configured() || request == null || isBlank(request.model()) ? runtime.modelName() : request.model();
 
         if (!runtime.configured()) {
             return new ChatResponse(
@@ -385,7 +386,12 @@ public class AihrModelSeedService {
     }
 
     private RuntimeConfig runtimeConfig(String requestedModel) {
-        return dbRuntimeConfig(requestedModel)
+        Optional<RuntimeConfig> resolved = dbRuntimeConfig(requestedModel);
+        if (resolved.isEmpty() && !isBlank(requestedModel)) {
+            // 请求的模型名在库里不存在（如前端 seed 占位行），回退到默认已启用的 chat 配置
+            resolved = dbRuntimeConfig(null);
+        }
+        return resolved
             .orElseGet(() -> new RuntimeConfig(DEFAULT_PROVIDER, fallback(requestedModel, DEFAULT_MODEL), null, null, false, "seed"));
     }
 
diff --git a/frontend/src/views/system/model/index.vue b/frontend/src/views/system/model/index.vue
index 2d0c27b9..9d760afc 100644
--- a/frontend/src/views/system/model/index.vue
+++ b/frontend/src/views/system/model/index.vue
@@ -471,7 +471,12 @@ const filteredProviders = computed(() => {
 const activeProvider = computed<ProviderView>(
   () => providers.value.find((item) => item.providerCode === selectedProviderCode.value) ?? providers.value[0] ?? seedProviders[0]
 );
-const activeChatModel = computed(() => modelRows.value.find((item) => item.category === 'chat' && item.enabled) ?? modelRows.value[0]);
+const activeChatModel = computed(
+  () =>
+    modelRows.value.find((item) => item.category === 'chat' && item.enabled && item.configured) ??
+    modelRows.value.find((item) => item.category === 'chat' && item.enabled) ??
+    modelRows.value[0]
+);
 const keyText = computed(() => {
   if (!activeProvider.value.configured) return '未配置';
   return showKey.value ? '已配置，接口不回传密钥' : 'sk-************';