diff --git a/invokeai/frontend/web/src/app/store/store.ts b/invokeai/frontend/web/src/app/store/store.ts
index dd80e1e378..d71a147913 100644
--- a/invokeai/frontend/web/src/app/store/store.ts
+++ b/invokeai/frontend/web/src/app/store/store.ts
@@ -15,6 +15,7 @@ import loraReducer from 'features/lora/store/loraSlice';
 import nodesReducer from 'features/nodes/store/nodesSlice';
 import generationReducer from 'features/parameters/store/generationSlice';
 import postprocessingReducer from 'features/parameters/store/postprocessingSlice';
+import sdxlReducer from 'features/sdxl/store/sdxlSlice';
 import configReducer from 'features/system/store/configSlice';
 import systemReducer from 'features/system/store/systemSlice';
 import modelmanagerReducer from 'features/ui/components/tabs/ModelManager/store/modelManagerSlice';
@@ -47,6 +48,7 @@ const allReducers = {
   imageDeletion: imageDeletionReducer,
   lora: loraReducer,
   modelmanager: modelmanagerReducer,
+  sdxl: sdxlReducer,
   [api.reducerPath]: api.reducer,
 };
 
@@ -58,6 +60,7 @@ const rememberedKeys: (keyof typeof allReducers)[] = [
   'canvas',
   'gallery',
   'generation',
+  'sdxl',
   'nodes',
   'postprocessing',
   'system',
diff --git a/invokeai/frontend/web/src/features/parameters/types/parameterSchemas.ts b/invokeai/frontend/web/src/features/parameters/types/parameterSchemas.ts
index cea5fb9987..bae683d7fb 100644
--- a/invokeai/frontend/web/src/features/parameters/types/parameterSchemas.ts
+++ b/invokeai/frontend/web/src/features/parameters/types/parameterSchemas.ts
@@ -42,6 +42,42 @@ export const isValidNegativePrompt = (
   val: unknown
 ): val is NegativePromptParam => zNegativePrompt.safeParse(val).success;
 
+/**
+ * Zod schema for SDXL positive style prompt parameter
+ */
+export const zPositiveStylePromptSDXL = z.string();
+/**
+ * Type alias for SDXL positive style prompt parameter, inferred from its zod schema
+ */
+export type PositiveStylePromptSDXLParam = z.infer<
+  typeof zPositiveStylePromptSDXL
+>;
+/**
+ * Validates/type-guards a value as a SDXL positive style prompt parameter
+ */
+export const isValidSDXLPositiveStylePrompt = (
+  val: unknown
+): val is PositiveStylePromptSDXLParam =>
+  zPositiveStylePromptSDXL.safeParse(val).success;
+
+/**
+ * Zod schema for SDXL negative style prompt parameter
+ */
+export const zNegativeStylePromptSDXL = z.string();
+/**
+ * Type alias for SDXL negative style prompt parameter, inferred from its zod schema
+ */
+export type NegativeStylePromptSDXLParam = z.infer<
+  typeof zNegativeStylePromptSDXL
+>;
+/**
+ * Validates/type-guards a value as a SDXL negative style prompt parameter
+ */
+export const isValidSDXLNegativeStylePrompt = (
+  val: unknown
+): val is NegativeStylePromptSDXLParam =>
+  zNegativeStylePromptSDXL.safeParse(val).success;
+
 /**
  * Zod schema for steps parameter
  */
diff --git a/invokeai/frontend/web/src/features/sdxl/store/sdxlSlice.ts b/invokeai/frontend/web/src/features/sdxl/store/sdxlSlice.ts
new file mode 100644
index 0000000000..95a0ac0de8
--- /dev/null
+++ b/invokeai/frontend/web/src/features/sdxl/store/sdxlSlice.ts
@@ -0,0 +1,41 @@
+import { PayloadAction, createSlice } from '@reduxjs/toolkit';
+import {
+  NegativeStylePromptSDXLParam,
+  PositiveStylePromptSDXLParam,
+} from 'features/parameters/types/parameterSchemas';
+
+type SDXLInitialState = {
+  shouldUseSDXLRefiner: boolean;
+  positiveStylePrompt: PositiveStylePromptSDXLParam;
+  negativeStylePrompt: NegativeStylePromptSDXLParam;
+};
+
+const sdxlInitialState: SDXLInitialState = {
+  shouldUseSDXLRefiner: false,
+  positiveStylePrompt: '',
+  negativeStylePrompt: '',
+};
+
+const sdxlSlice = createSlice({
+  name: 'sdxl',
+  initialState: sdxlInitialState,
+  reducers: {
+    setPositiveStylePromptSDXL: (state, action: PayloadAction<string>) => {
+      state.positiveStylePrompt = action.payload;
+    },
+    setNegativeStylePromptSDXL: (state, action: PayloadAction<string>) => {
+      state.negativeStylePrompt = action.payload;
+    },
+    setShouldUseSDXLRefiner: (state, action: PayloadAction<boolean>) => {
+      state.shouldUseSDXLRefiner = action.payload;
+    },
+  },
+});
+
+export const {
+  setPositiveStylePromptSDXL,
+  setNegativeStylePromptSDXL,
+  setShouldUseSDXLRefiner,
+} = sdxlSlice.actions;
+
+export default sdxlSlice.reducer;