diff --git a/src/components/nodes/LLMGenerateNode.tsx b/src/components/nodes/LLMGenerateNode.tsx
index 05697b19..e22e2979 100644
--- a/src/components/nodes/LLMGenerateNode.tsx
+++ b/src/components/nodes/LLMGenerateNode.tsx
@@ -7,6 +7,7 @@ import { useWorkflowStore } from "@/store/workflowStore";
 import { LLMGenerateNodeData, LLMProvider, LLMModelType } from "@/types";
 import { useInlineParameters } from "@/hooks/useInlineParameters";
 import { InlineParameterPanel } from "./InlineParameterPanel";
+import { SettingsTabBar } from "./SettingsTabBar";
 
 // LLM providers and models
 const LLM_PROVIDERS: { value: LLMProvider; label: string }[] = [
@@ -54,6 +55,7 @@ export function LLMGenerateNode({ id, data, selected }: NodeProps<LLMGenerateNod
   }, [id, updateNodeData]);
 
   const [copied, setCopied] = useState(false);
+  const [settingsTab, setSettingsTab] = useState<"primary" | "fallback">("primary");
 
   const handleCopyOutput = useCallback(async () => {
     if (nodeData.outputText) {
@@ -129,68 +131,131 @@ export function LLMGenerateNode({ id, data, selected }: NodeProps<LLMGenerateNod
           onToggle={handleToggleParams}
           nodeId={id}
         >
-          {/* LLM-specific controls */}
-          <div className="space-y-1.5 max-w-[280px]">
-            {/* Provider */}
-            <div className="flex items-center gap-2">
-              <label className="text-[11px] text-neutral-400 shrink-0">Provider</label>
-              <select
-                value={provider}
-                onChange={handleProviderChange}
-                className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-[#1a1a1a] rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
-              >
-                {LLM_PROVIDERS.map(p => (
-                  <option key={p.value} value={p.value}>{p.label}</option>
-                ))}
-              </select>
-            </div>
+          {/* Tab bar for primary/fallback settings */}
+          {nodeData.fallbackModel && (
+            <SettingsTabBar
+              activeTab={settingsTab}
+              onTabChange={setSettingsTab}
+              primaryLabel={nodeData.model || "Primary"}
+              fallbackLabel={nodeData.fallbackModel.displayName}
+            />
+          )}
 
-            {/* Model */}
-            <div className="flex items-center gap-2">
-              <label className="text-[11px] text-neutral-400 shrink-0">Model</label>
-              <select
-                value={nodeData.model || availableModels[0].value}
-                onChange={handleModelChange}
-                className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-[#1a1a1a] rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
-              >
-                {availableModels.map(m => (
-                  <option key={m.value} value={m.value}>{m.label}</option>
-                ))}
-              </select>
-            </div>
+          {/* Primary tab: LLM-specific controls */}
+          {settingsTab === "primary" && (
+            <div className="space-y-1.5 max-w-[280px]">
+              {/* Provider */}
+              <div className="flex items-center gap-2">
+                <label className="text-[11px] text-neutral-400 shrink-0">Provider</label>
+                <select
+                  value={provider}
+                  onChange={handleProviderChange}
+                  className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-[#1a1a1a] rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
+                >
+                  {LLM_PROVIDERS.map(p => (
+                    <option key={p.value} value={p.value}>{p.label}</option>
+                  ))}
+                </select>
+              </div>
 
-            {/* Temperature */}
-            <div className="flex flex-col gap-0.5">
-              <label className="text-[11px] text-neutral-400">
-                Temperature: {(nodeData.temperature ?? 0.7).toFixed(2)}
-              </label>
-              <input
-                type="range"
-                min="0"
-                max={provider === "anthropic" ? "1" : "2"}
-                step="0.01"
-                value={nodeData.temperature ?? 0.7}
-                onChange={handleTemperatureChange}
-                className="nodrag nopan w-full h-1 bg-neutral-700 rounded-lg appearance-none cursor-pointer accent-blue-500"
-              />
-            </div>
+              {/* Model */}
+              <div className="flex items-center gap-2">
+                <label className="text-[11px] text-neutral-400 shrink-0">Model</label>
+                <select
+                  value={nodeData.model || availableModels[0].value}
+                  onChange={handleModelChange}
+                  className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-[#1a1a1a] rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
+                >
+                  {availableModels.map(m => (
+                    <option key={m.value} value={m.value}>{m.label}</option>
+                  ))}
+                </select>
+              </div>
 
-            {/* Max Tokens */}
-            <div className="flex flex-col gap-0.5">
-              <label className="text-[11px] text-neutral-400">
-                Max Tokens: {(nodeData.maxTokens || 2048).toLocaleString()}
-              </label>
-              <input
-                type="range"
-                min="256"
-                max="16384"
-                step="256"
-                value={nodeData.maxTokens || 2048}
-                onChange={handleMaxTokensChange}
-                className="nodrag nopan w-full h-1 bg-neutral-700 rounded-lg appearance-none cursor-pointer accent-blue-500"
-              />
+              {/* Temperature */}
+              <div className="flex flex-col gap-0.5">
+                <label className="text-[11px] text-neutral-400">
+                  Temperature: {(nodeData.temperature ?? 0.7).toFixed(2)}
+                </label>
+                <input
+                  type="range"
+                  min="0"
+                  max={provider === "anthropic" ? "1" : "2"}
+                  step="0.01"
+                  value={nodeData.temperature ?? 0.7}
+                  onChange={handleTemperatureChange}
+                  className="nodrag nopan w-full h-1 bg-neutral-700 rounded-lg appearance-none cursor-pointer accent-blue-500"
+                />
+              </div>
+
+              {/* Max Tokens */}
+              <div className="flex flex-col gap-0.5">
+                <label className="text-[11px] text-neutral-400">
+                  Max Tokens: {(nodeData.maxTokens || 2048).toLocaleString()}
+                </label>
+                <input
+                  type="range"
+                  min="256"
+                  max="16384"
+                  step="256"
+                  value={nodeData.maxTokens || 2048}
+                  onChange={handleMaxTokensChange}
+                  className="nodrag nopan w-full h-1 bg-neutral-700 rounded-lg appearance-none cursor-pointer accent-blue-500"
+                />
+              </div>
             </div>
-          </div>
+          )}
+
+          {/* Fallback tab: temperature + maxTokens for fallback model */}
+          {settingsTab === "fallback" && nodeData.fallbackModel && (() => {
+            const fbParams = nodeData.fallbackParameters || {};
+            const fbTemp = (fbParams.temperature as number | undefined) ?? 0.7;
+            const fbMaxTokens = (fbParams.maxTokens as number | undefined) ?? 2048;
+            const fbProvider = nodeData.fallbackModel!.provider;
+            const isAnthropicFb = fbProvider === "anthropic";
+
+            return (
+              <div className="space-y-1.5 max-w-[280px]">
+                {/* Read-only model display */}
+                <div className="flex items-center gap-2">
+                  <label className="text-[11px] text-neutral-400 shrink-0">Model</label>
+                  <span className="text-[11px] text-neutral-200 truncate">{nodeData.fallbackModel!.displayName}</span>
+                </div>
+
+                {/* Temperature */}
+                <div className="flex flex-col gap-0.5">
+                  <label className="text-[11px] text-neutral-400">
+                    Temperature: {fbTemp.toFixed(2)}
+                  </label>
+                  <input
+                    type="range"
+                    min="0"
+                    max={isAnthropicFb ? "1" : "2"}
+                    step="0.01"
+                    value={fbTemp}
+                    onChange={(e) => updateNodeData(id, { fallbackParameters: { ...fbParams, temperature: parseFloat(e.target.value) } })}
+                    className="nodrag nopan w-full h-1 bg-neutral-700 rounded-lg appearance-none cursor-pointer accent-blue-500"
+                  />
+                </div>
+
+                {/* Max Tokens */}
+                <div className="flex flex-col gap-0.5">
+                  <label className="text-[11px] text-neutral-400">
+                    Max Tokens: {fbMaxTokens.toLocaleString()}
+                  </label>
+                  <input
+                    type="range"
+                    min="256"
+                    max="16384"
+                    step="256"
+                    value={fbMaxTokens}
+                    onChange={(e) => updateNodeData(id, { fallbackParameters: { ...fbParams, maxTokens: parseInt(e.target.value, 10) } })}
+                    className="nodrag nopan w-full h-1 bg-neutral-700 rounded-lg appearance-none cursor-pointer accent-blue-500"
+                  />
+                </div>
+              </div>
+            );
+          })()}
         </InlineParameterPanel>
       ) : undefined}
     >
diff --git a/src/store/execution/llmGenerateExecutor.ts b/src/store/execution/llmGenerateExecutor.ts
index f52b2a71..3d8e7fa7 100644
--- a/src/store/execution/llmGenerateExecutor.ts
+++ b/src/store/execution/llmGenerateExecutor.ts
@@ -77,11 +77,14 @@ export async function executeLlmGenerate(
     error: null,
   });
 
-  const runOnce = async (modelToUse: SelectedModel): Promise<void> => {
+  const runOnce = async (modelToUse: SelectedModel, parametersOverride?: Record<string, unknown>): Promise<void> => {
     const llmProvider = providerTypeToLlmProvider(modelToUse.provider);
     const llmModel = modelToUse.modelId as LLMModelType;
     const headers = buildLlmHeaders(llmProvider, providerSettings);
 
+    const temperature = (parametersOverride?.temperature as number | undefined) ?? nodeData.temperature;
+    const maxTokens = (parametersOverride?.maxTokens as number | undefined) ?? nodeData.maxTokens;
+
     try {
       const response = await fetch("/api/llm", {
         method: "POST",
@@ -91,8 +94,8 @@ export async function executeLlmGenerate(
           ...(images.length > 0 && { images }),
           provider: llmProvider,
           model: llmModel,
-          temperature: nodeData.temperature,
-          maxTokens: nodeData.maxTokens,
+          temperature,
+          maxTokens,
         }),
         ...(signal ? { signal } : {}),
       });
@@ -165,7 +168,9 @@ export async function executeLlmGenerate(
     nodeId: node.id,
     primary: primaryModel,
     fallback: nodeData.fallbackModel,
+    fallbackParameters: nodeData.fallbackParameters,
     updateNodeData,
     runOnce,
+    clearOutput: { outputText: null },
   });
 }
diff --git a/src/types/nodes.ts b/src/types/nodes.ts
index 49cc4b73..901dafae 100644
--- a/src/types/nodes.ts
+++ b/src/types/nodes.ts
@@ -305,6 +305,7 @@ export interface LLMGenerateNodeData extends BaseNodeData {
   model: LLMModelType;
   temperature: number;
   maxTokens: number;
+  fallbackParameters?: Record<string, unknown>; // Parameters for fallback model (temperature, maxTokens)
   parametersExpanded?: boolean; // Collapse state for inline parameter display
   _settingsPanelHeight?: number; // Measured settings panel height for reload correction
   status: NodeStatus;