diff --git a/src/app/settings/settings.page.ts b/src/app/settings/settings.page.ts
index 77d69e918..54507258e 100644
--- a/src/app/settings/settings.page.ts
+++ b/src/app/settings/settings.page.ts
@@ -583,6 +583,7 @@ export class SettingsPage {
     this.settings.cloud_ai_api_key = '';
     this.settings.cloud_ai_model = '';
     this.settings.cloud_ai_base_url = '';
+    this.settings.cloud_ai_model_supports_temperature = null;
     this.saveSettings();
   }
 
@@ -619,6 +620,11 @@ export class SettingsPage {
     const { data } = await modal.onWillDismiss();
     if (data?.modelId) {
       this.settings.cloud_ai_model = data.modelId;
+      // Capability advertised by the provider (OpenRouter); null when unknown.
+      this.settings.cloud_ai_model_supports_temperature =
+        typeof data.supportsTemperature === 'boolean'
+          ? data.supportsTemperature
+          : null;
       this.saveSettings();
     }
   }
diff --git a/src/classes/settings/settings.ts b/src/classes/settings/settings.ts
index f5e7142eb..24c11b8e7 100755
--- a/src/classes/settings/settings.ts
+++ b/src/classes/settings/settings.ts
@@ -258,6 +258,7 @@ export class Settings implements ISettings {
   public cloud_ai_api_key: string;
   public cloud_ai_model: string;
   public cloud_ai_base_url: string;
+  public cloud_ai_model_supports_temperature: boolean | null;
 
   public show_backup_issues: boolean;
 
@@ -612,6 +613,7 @@ export class Settings implements ISettings {
     this.cloud_ai_api_key = '';
     this.cloud_ai_model = '';
     this.cloud_ai_base_url = '';
+    this.cloud_ai_model_supports_temperature = null;
 
     this.show_backup_issues = true;
 
@@ -714,6 +716,12 @@ export class Settings implements ISettings {
     } else {
       this.cloud_ai_base_url = settingsObj.cloud_ai_base_url;
     }
+    if (typeof settingsObj.cloud_ai_model_supports_temperature === 'boolean') {
+      this.cloud_ai_model_supports_temperature =
+        settingsObj.cloud_ai_model_supports_temperature;
+    } else {
+      this.cloud_ai_model_supports_temperature = null;
+    }
   }
 
   public resetBeanFilter() {
diff --git a/src/components/cloud-model-picker/cloud-model-picker.component.ts b/src/components/cloud-model-picker/cloud-model-picker.component.ts
index b85b8161b..c7bb020c2 100644
--- a/src/components/cloud-model-picker/cloud-model-picker.component.ts
+++ b/src/components/cloud-model-picker/cloud-model-picker.component.ts
@@ -96,7 +96,7 @@ export class CloudModelPickerComponent implements OnInit {
 
   selectModel(model: CloudModel): void {
     void this.modalCtrl.dismiss(
-      { modelId: model.id },
+      { modelId: model.id, supportsTemperature: model.supportsTemperature },
       'confirm',
       CloudModelPickerComponent.COMPONENT_ID,
     );
diff --git a/src/interfaces/settings/iSettings.ts b/src/interfaces/settings/iSettings.ts
index 113688f54..65f2db3e9 100755
--- a/src/interfaces/settings/iSettings.ts
+++ b/src/interfaces/settings/iSettings.ts
@@ -236,6 +236,9 @@ export interface ISettings {
   cloud_ai_api_key: string;
   cloud_ai_model: string;
   cloud_ai_base_url: string;
+  // Whether the selected model accepts an explicit temperature, when the
+  // provider advertises it (OpenRouter). null = unknown, decided at runtime.
+  cloud_ai_model_supports_temperature: boolean | null;
 
   show_backup_issues: boolean;
 
diff --git a/src/services/aiBeanImport/__tests__/cloud-model-list.service.spec.ts b/src/services/aiBeanImport/__tests__/cloud-model-list.service.spec.ts
index 0b04e92bb..b75cd3a5c 100644
--- a/src/services/aiBeanImport/__tests__/cloud-model-list.service.spec.ts
+++ b/src/services/aiBeanImport/__tests__/cloud-model-list.service.spec.ts
@@ -252,6 +252,51 @@ describe('cloud-model-list.service', () => {
       expect(gpt4o.contextLength).toBe(128000);
       expect(claude.contextLength).toBe(200000);
     });
+
+    it('should derive supportsTemperature from supported_parameters', async () => {
+      // Arrange
+      fetchSpy.and.returnValue(
+        Promise.resolve(
+          mockFetchResponse({
+            data: [
+              {
+                id: 'openai/gpt-4o',
+                name: 'GPT-4o',
+                supported_parameters: ['temperature', 'top_p', 'tools'],
+              },
+              {
+                id: 'openai/gpt-5.6-terra',
+                name: 'GPT-5.6 Terra',
+                supported_parameters: ['top_p', 'tools'],
+              },
+              {
+                id: 'some/model-without-metadata',
+                name: 'No Metadata',
+              },
+            ],
+          }),
+        ),
+      );
+
+      // Act
+      const models = await fetchAvailableModels(
+        AI_PROVIDER_ENUM.OPENROUTER,
+        '',
+      );
+
+      // Assert
+      expect(
+        models.find((m) => m.id === 'openai/gpt-4o').supportsTemperature,
+      ).toBe(true);
+      expect(
+        models.find((m) => m.id === 'openai/gpt-5.6-terra').supportsTemperature,
+      ).toBe(false);
+      // No supported_parameters advertised → unknown, left undefined.
+      expect(
+        models.find((m) => m.id === 'some/model-without-metadata')
+          .supportsTemperature,
+      ).toBeUndefined();
+    });
   });
 
   describe('OpenAI', () => {
diff --git a/src/services/aiBeanImport/cloud-field-extraction.service.ts b/src/services/aiBeanImport/cloud-field-extraction.service.ts
index e051b4371..3c2f0bb38 100644
--- a/src/services/aiBeanImport/cloud-field-extraction.service.ts
+++ b/src/services/aiBeanImport/cloud-field-extraction.service.ts
@@ -59,6 +59,10 @@ export class CloudFieldExtractionService {
         apiKey: settings.cloud_ai_api_key,
         model: settings.cloud_ai_model,
         baseUrl: settings.cloud_ai_base_url || undefined,
+        // Skip the first (doomed) attempt when the provider already told us the
+        // model rejects an explicit temperature.
+        supportsTemperature:
+          settings.cloud_ai_model_supports_temperature ?? undefined,
       };
     }
 
diff --git a/src/services/aiBeanImport/cloud-model-list.service.ts b/src/services/aiBeanImport/cloud-model-list.service.ts
index 6318eecf8..ae32af03a 100644
--- a/src/services/aiBeanImport/cloud-model-list.service.ts
+++ b/src/services/aiBeanImport/cloud-model-list.service.ts
@@ -4,6 +4,9 @@ export interface CloudModel {
   id: string;
   name: string;
   contextLength?: number;
+  // Whether the model accepts an explicit `temperature`, when the provider
+  // advertises it (OpenRouter's supported_parameters). undefined = unknown.
+  supportsTemperature?: boolean;
 }
 
 const TIMEOUT_MS = 15000;
@@ -42,6 +45,7 @@ interface RawOpenRouterModel {
   id: string;
   name?: string;
   context_length?: number;
+  supported_parameters?: string[];
 }
 
 interface RawCustomModel {
@@ -167,6 +171,9 @@ function buildProviderConfig(
             id: m.id,
             name: m.name ?? m.id,
             contextLength: m.context_length,
+            supportsTemperature: Array.isArray(m.supported_parameters)
+              ? m.supported_parameters.includes('temperature')
+              : undefined,
           };
         },
       };