diff --git a/.replit b/.replit
index 3238a51..a246e2c 100644
--- a/.replit
+++ b/.replit
@@ -14,6 +14,10 @@ run = ["npm", "run", "start"]
 localPort = 5000
 externalPort = 80
 
+[[ports]]
+localPort = 33041
+externalPort = 3000
+
 [env]
 PORT = "5000"
 
diff --git a/client/src/pages/settings.tsx b/client/src/pages/settings.tsx
index 606011c..e50c98a 100644
--- a/client/src/pages/settings.tsx
+++ b/client/src/pages/settings.tsx
@@ -1,5 +1,5 @@
 import { useState, useEffect } from "react";
-import { Settings as SettingsIcon, Bell, Key, Shield, Cloud } from "lucide-react";
+import { Settings as SettingsIcon, Bell, Key, Shield, Cloud, Brain } from "lucide-react";
 import { useQuery, useMutation } from "@tanstack/react-query";
 import Sidebar from "@/components/sidebar";
 import TopBar from "@/components/topbar";
@@ -7,6 +7,8 @@ import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/com
 import { Label } from "@/components/ui/label";
 import { Switch } from "@/components/ui/switch";
 import { Input } from "@/components/ui/input";
+import { Textarea } from "@/components/ui/textarea";
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
 import { Button } from "@/components/ui/button";
 import { useToast } from "@/hooks/use-toast";
 import { apiRequest, queryClient } from "@/lib/queryClient";
@@ -18,12 +20,19 @@ export default function Settings() {
   const [cloudName, setCloudName] = useState("");
   const [apiKey, setApiKey] = useState("");
   const [apiSecret, setApiSecret] = useState("");
+  const [openrouterApiKey, setOpenrouterApiKey] = useState("");
+  const [openrouterModel, setOpenrouterModel] = useState("anthropic/claude-3.5-sonnet");
+  const [openrouterSystemPrompt, setOpenrouterSystemPrompt] = useState("Tu es un expert en marketing des réseaux sociaux. Génère 3 variations de textes engageants pour des publications Facebook et Instagram à partir des informations produit fournies. Chaque variation doit être unique, captivante et optimisée pour l'engagement.");
   const { toast } = useToast();
 
   const { data: cloudinaryConfig } = useQuery({
     queryKey: ['/api/cloudinary/config'],
   });
 
+  const { data: openrouterConfig } = useQuery({
+    queryKey: ['/api/openrouter/config'],
+  });
+
   useEffect(() => {
     if (cloudinaryConfig) {
       setCloudName((cloudinaryConfig as any).cloudName || "");
@@ -31,6 +40,13 @@ export default function Settings() {
     }
   }, [cloudinaryConfig]);
 
+  useEffect(() => {
+    if (openrouterConfig) {
+      setOpenrouterModel((openrouterConfig as any).model || "anthropic/claude-3.5-sonnet");
+      setOpenrouterSystemPrompt((openrouterConfig as any).systemPrompt || "Tu es un expert en marketing des réseaux sociaux. Génère 3 variations de textes engageants pour des publications Facebook et Instagram à partir des informations produit fournies. Chaque variation doit être unique, captivante et optimisée pour l'engagement.");
+    }
+  }, [openrouterConfig]);
+
   const saveCloudinaryMutation = useMutation({
     mutationFn: () => 
       apiRequest('POST', '/api/cloudinary/config', {
@@ -55,6 +71,30 @@ export default function Settings() {
     },
   });
 
+  const saveOpenrouterMutation = useMutation({
+    mutationFn: () => 
+      apiRequest('POST', '/api/openrouter/config', {
+        apiKey: openrouterApiKey,
+        model: openrouterModel,
+        systemPrompt: openrouterSystemPrompt,
+      }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['/api/openrouter/config'] });
+      toast({
+        title: "Configuration sauvegardée",
+        description: "Vos paramètres OpenRouter ont été enregistrés",
+      });
+      setOpenrouterApiKey(""); // Clear the API key after saving
+    },
+    onError: () => {
+      toast({
+        title: "Erreur",
+        description: "Impossible de sauvegarder la configuration OpenRouter",
+        variant: "destructive",
+      });
+    },
+  });
+
   return (
     <div className="flex h-screen overflow-hidden bg-background">
       {sidebarOpen && (
@@ -128,26 +168,72 @@ export default function Settings() {
             <Card>
               <CardHeader>
                 <CardTitle className="flex items-center gap-2">
-                  <Key className="w-5 h-5" />
-                  Clés API
+                  <Brain className="w-5 h-5" />
+                  Configuration OpenRouter (IA)
                 </CardTitle>
                 <CardDescription>
-                  Configurez vos clés API pour les intégrations
+                  Configurez OpenRouter pour la génération de texte avec l'IA
                 </CardDescription>
               </CardHeader>
               <CardContent className="space-y-4">
                 <div className="space-y-2">
-                  <Label htmlFor="openrouterKey">Clé API OpenRouter</Label>
+                  <Label htmlFor="openrouterApiKey">Clé API OpenRouter</Label>
                   <Input
-                    id="openrouterKey"
+                    id="openrouterApiKey"
                     type="password"
+                    value={openrouterApiKey}
+                    onChange={(e) => setOpenrouterApiKey(e.target.value)}
                     placeholder="sk-or-v1-..."
-                    data-testid="input-openrouter-key"
+                    data-testid="input-openrouter-api-key"
                   />
                   <p className="text-xs text-muted-foreground">
-                    Utilisée pour la génération de texte IA
+                    Obtenez votre clé API sur{" "}
+                    <a href="https://openrouter.ai/keys" target="_blank" rel="noopener noreferrer" className="underline">
+                      openrouter.ai
+                    </a>
                   </p>
                 </div>
+                <div className="space-y-2">
+                  <Label htmlFor="openrouterModel">Modèle d'IA</Label>
+                  <Select value={openrouterModel} onValueChange={setOpenrouterModel}>
+                    <SelectTrigger id="openrouterModel" data-testid="select-openrouter-model">
+                      <SelectValue placeholder="Sélectionner un modèle" />
+                    </SelectTrigger>
+                    <SelectContent>
+                      <SelectItem value="anthropic/claude-3.5-sonnet">Claude 3.5 Sonnet</SelectItem>
+                      <SelectItem value="anthropic/claude-3-opus">Claude 3 Opus</SelectItem>
+                      <SelectItem value="openai/gpt-4o">GPT-4o</SelectItem>
+                      <SelectItem value="openai/gpt-4-turbo">GPT-4 Turbo</SelectItem>
+                      <SelectItem value="google/gemini-pro-1.5">Gemini 1.5 Pro</SelectItem>
+                      <SelectItem value="meta-llama/llama-3.1-70b-instruct">Llama 3.1 70B</SelectItem>
+                    </SelectContent>
+                  </Select>
+                  <p className="text-xs text-muted-foreground">
+                    Choisissez le modèle d'IA pour générer vos publications
+                  </p>
+                </div>
+                <div className="space-y-2">
+                  <Label htmlFor="openrouterSystemPrompt">Prompt système</Label>
+                  <Textarea
+                    id="openrouterSystemPrompt"
+                    value={openrouterSystemPrompt}
+                    onChange={(e) => setOpenrouterSystemPrompt(e.target.value)}
+                    placeholder="Instructions pour l'IA..."
+                    rows={6}
+                    data-testid="textarea-openrouter-system-prompt"
+                  />
+                  <p className="text-xs text-muted-foreground">
+                    Définissez les instructions que l'IA doit suivre pour générer vos textes
+                  </p>
+                </div>
+                <Button 
+                  onClick={() => saveOpenrouterMutation.mutate()}
+                  disabled={saveOpenrouterMutation.isPending || !openrouterApiKey || !openrouterModel || !openrouterSystemPrompt}
+                  data-testid="button-save-openrouter"
+                  className="w-full"
+                >
+                  {saveOpenrouterMutation.isPending ? "Enregistrement..." : "Enregistrer OpenRouter"}
+                </Button>
               </CardContent>
             </Card>
 
diff --git a/server/routes.ts b/server/routes.ts
index 3643989..bc69862 100644
--- a/server/routes.ts
+++ b/server/routes.ts
@@ -4,7 +4,7 @@ import { storage } from "./storage";
 import multer from "multer";
 import { openRouterService } from "./services/openrouter";
 import { cloudinaryService } from "./services/cloudinary";
-import { insertPostSchema, insertScheduledPostSchema, insertSocialPageSchema, insertAiGenerationSchema, insertCloudinaryConfigSchema } from "@shared/schema";
+import { insertPostSchema, insertScheduledPostSchema, insertSocialPageSchema, insertAiGenerationSchema, insertCloudinaryConfigSchema, insertOpenrouterConfigSchema } from "@shared/schema";
 
 const upload = multer({ storage: multer.memoryStorage() });
 
@@ -41,7 +41,7 @@ export async function registerRoutes(app: Express): Promise<Server> {
       const productInfo = req.body;
       const userId = "demo-user"; // In real app, get from session/auth
 
-      const generatedTexts = await openRouterService.generatePostText(productInfo);
+      const generatedTexts = await openRouterService.generatePostText(productInfo, userId);
 
       // Save to database
       await storage.createAiGeneration({
@@ -283,6 +283,53 @@ export async function registerRoutes(app: Express): Promise<Server> {
     }
   });
 
+  // OpenRouter configuration
+  app.get("/api/openrouter/config", async (req, res) => {
+    try {
+      const userId = "demo-user"; // In real app, get from session/auth
+      const config = await storage.getOpenrouterConfig(userId);
+      
+      if (!config) {
+        return res.json(null);
+      }
+
+      // Don't send the API key to the client
+      const { apiKey, ...safeConfig } = config;
+      res.json(safeConfig);
+    } catch (error) {
+      console.error("Error fetching OpenRouter config:", error);
+      res.status(500).json({ error: "Failed to fetch OpenRouter config" });
+    }
+  });
+
+  app.post("/api/openrouter/config", async (req, res) => {
+    try {
+      const userId = "demo-user"; // In real app, get from session/auth
+      
+      const configData = insertOpenrouterConfigSchema.parse({
+        ...req.body,
+        userId,
+      });
+
+      // Check if config already exists
+      const existingConfig = await storage.getOpenrouterConfig(userId);
+      
+      let config;
+      if (existingConfig) {
+        config = await storage.updateOpenrouterConfig(userId, configData);
+      } else {
+        config = await storage.createOpenrouterConfig(configData);
+      }
+
+      // Don't send the API key back
+      const { apiKey, ...safeConfig } = config;
+      res.json(safeConfig);
+    } catch (error) {
+      console.error("Error saving OpenRouter config:", error);
+      res.status(500).json({ error: "Failed to save OpenRouter config" });
+    }
+  });
+
   const httpServer = createServer(app);
 
   return httpServer;
diff --git a/server/services/openrouter.ts b/server/services/openrouter.ts
index ac97545..88bedab 100644
--- a/server/services/openrouter.ts
+++ b/server/services/openrouter.ts
@@ -12,35 +12,32 @@ interface GeneratedText {
   characterCount: number;
 }
 
+import { storage } from '../storage';
+
 export class OpenRouterService {
-  private apiKey: string;
   private baseUrl = "https://openrouter.ai/api/v1/chat/completions";
 
-  constructor() {
-    this.apiKey = process.env.OPENROUTER_API_KEY || "";
-    if (!this.apiKey) {
-      console.warn("OPENROUTER_API_KEY not set. AI text generation will not work.");
-    }
-  }
-
-  async generatePostText(productInfo: ProductInfo): Promise<GeneratedText[]> {
-    if (!this.apiKey) {
-      throw new Error("OpenRouter API key not configured");
+  async generatePostText(productInfo: ProductInfo, userId: string): Promise<GeneratedText[]> {
+    // Get user's OpenRouter configuration
+    const config = await storage.getOpenrouterConfig(userId);
+    
+    if (!config) {
+      throw new Error('Configuration OpenRouter non trouvée. Veuillez configurer OpenRouter dans les paramètres.');
     }
 
-    const prompt = this.buildPrompt(productInfo);
+    const prompt = this.buildPrompt(productInfo, config.systemPrompt);
 
     try {
       const response = await fetch(this.baseUrl, {
         method: "POST",
         headers: {
-          "Authorization": `Bearer ${this.apiKey}`,
+          "Authorization": `Bearer ${config.apiKey}`,
           "Content-Type": "application/json",
-          "HTTP-Referer": process.env.APP_URL || "http://localhost:5000",
+          "HTTP-Referer": process.env.APP_URL || "http://localhost:5555",
           "X-Title": "Social Flow"
         },
         body: JSON.stringify({
-          model: "anthropic/claude-3.5-sonnet",
+          model: config.model,
           messages: [
             {
               role: "user",
@@ -66,26 +63,18 @@ export class OpenRouterService {
     }
   }
 
-  private buildPrompt(productInfo: ProductInfo): string {
+  private buildPrompt(productInfo: ProductInfo, systemPrompt: string): string {
     const features = productInfo.features?.join(", ") || "";
     
-    return `Tu es un expert en marketing sur les réseaux sociaux. Génère 3 variantes de texte pour une publication Facebook/Instagram pour ce produit:
-
-Nom: ${productInfo.name}
+    const productDetails = `Nom: ${productInfo.name}
 ${productInfo.description ? `Description: ${productInfo.description}` : ''}
 ${productInfo.price ? `Prix: ${productInfo.price}` : ''}
-${features ? `Caractéristiques: ${features}` : ''}
+${features ? `Caractéristiques: ${features}` : ''}`;
 
-Crée 3 versions différentes:
-1. Version Dynamique - Énergique et engageante avec des emojis
-2. Version Informative - Factuelle et professionnelle
-3. Version Émotionnelle - Axée sur les bénéfices émotionnels
+    return `${systemPrompt}
 
-Chaque version doit:
-- Être en français
-- Faire entre 150-250 caractères
-- Être optimisée pour les réseaux sociaux
-- Inclure des emojis pertinents (sauf la version informative)
+Informations produit:
+${productDetails}
 
 Format de réponse:
 VERSION 1 - DYNAMIQUE:
diff --git a/server/storage.ts b/server/storage.ts
index c967f6d..d3485b2 100644
--- a/server/storage.ts
+++ b/server/storage.ts
@@ -6,6 +6,7 @@ import {
   scheduledPosts,
   aiGenerations,
   cloudinaryConfig,
+  openrouterConfig,
   type User, 
   type InsertUser,
   type SocialPage,
@@ -20,6 +21,8 @@ import {
   type InsertAiGeneration,
   type CloudinaryConfig,
   type InsertCloudinaryConfig,
+  type OpenrouterConfig,
+  type InsertOpenrouterConfig,
 } from "@shared/schema";
 import { db } from "./db";
 import { eq, and, gte, lte, desc, isNull } from "drizzle-orm";
@@ -66,6 +69,11 @@ export interface IStorage {
   getCloudinaryConfig(userId: string): Promise<CloudinaryConfig | undefined>;
   createCloudinaryConfig(config: InsertCloudinaryConfig): Promise<CloudinaryConfig>;
   updateCloudinaryConfig(userId: string, config: Partial<InsertCloudinaryConfig>): Promise<CloudinaryConfig>;
+
+  // OpenRouter Config
+  getOpenrouterConfig(userId: string): Promise<OpenrouterConfig | undefined>;
+  createOpenrouterConfig(config: InsertOpenrouterConfig): Promise<OpenrouterConfig>;
+  updateOpenrouterConfig(userId: string, config: Partial<InsertOpenrouterConfig>): Promise<OpenrouterConfig>;
 }
 
 export class DatabaseStorage implements IStorage {
@@ -235,6 +243,25 @@ export class DatabaseStorage implements IStorage {
       .returning();
     return updated;
   }
+
+  // OpenRouter Config
+  async getOpenrouterConfig(userId: string): Promise<OpenrouterConfig | undefined> {
+    const [config] = await db.select().from(openrouterConfig).where(eq(openrouterConfig.userId, userId));
+    return config || undefined;
+  }
+
+  async createOpenrouterConfig(config: InsertOpenrouterConfig): Promise<OpenrouterConfig> {
+    const [newConfig] = await db.insert(openrouterConfig).values(config).returning();
+    return newConfig;
+  }
+
+  async updateOpenrouterConfig(userId: string, config: Partial<InsertOpenrouterConfig>): Promise<OpenrouterConfig> {
+    const [updated] = await db.update(openrouterConfig)
+      .set({ ...config, updatedAt: new Date() })
+      .where(eq(openrouterConfig.userId, userId))
+      .returning();
+    return updated;
+  }
 }
 
 export const storage = new DatabaseStorage();
diff --git a/shared/schema.ts b/shared/schema.ts
index bdf10e9..b07c9af 100644
--- a/shared/schema.ts
+++ b/shared/schema.ts
@@ -37,6 +37,16 @@ export const cloudinaryConfig = pgTable("cloudinary_config", {
   updatedAt: timestamp("updated_at").defaultNow(),
 });
 
+export const openrouterConfig = pgTable("openrouter_config", {
+  id: varchar("id").primaryKey().default(sql`gen_random_uuid()`),
+  userId: varchar("user_id").notNull().unique().references(() => users.id, { onDelete: "cascade" }),
+  apiKey: text("api_key").notNull(),
+  model: text("model").notNull().default("anthropic/claude-3.5-sonnet"),
+  systemPrompt: text("system_prompt").notNull().default("Tu es un expert en marketing des réseaux sociaux. Génère 3 variations de textes engageants pour des publications Facebook et Instagram à partir des informations produit fournies. Chaque variation doit être unique, captivante et optimisée pour l'engagement."),
+  createdAt: timestamp("created_at").defaultNow(),
+  updatedAt: timestamp("updated_at").defaultNow(),
+});
+
 export const media = pgTable("media", {
   id: varchar("id").primaryKey().default(sql`gen_random_uuid()`),
   userId: varchar("user_id").notNull().references(() => users.id, { onDelete: "cascade" }),
@@ -96,6 +106,7 @@ export const usersRelations = relations(users, ({ many, one }) => ({
   posts: many(posts),
   aiGenerations: many(aiGenerations),
   cloudinaryConfig: one(cloudinaryConfig),
+  openrouterConfig: one(openrouterConfig),
 }));
 
 export const cloudinaryConfigRelations = relations(cloudinaryConfig, ({ one }) => ({
@@ -105,6 +116,13 @@ export const cloudinaryConfigRelations = relations(cloudinaryConfig, ({ one }) =
   }),
 }));
 
+export const openrouterConfigRelations = relations(openrouterConfig, ({ one }) => ({
+  user: one(users, {
+    fields: [openrouterConfig.userId],
+    references: [users.id],
+  }),
+}));
+
 export const socialPagesRelations = relations(socialPages, ({ one, many }) => ({
   user: one(users, {
     fields: [socialPages.userId],
@@ -199,6 +217,12 @@ export const insertCloudinaryConfigSchema = createInsertSchema(cloudinaryConfig)
   updatedAt: true,
 });
 
+export const insertOpenrouterConfigSchema = createInsertSchema(openrouterConfig).omit({
+  id: true,
+  createdAt: true,
+  updatedAt: true,
+});
+
 // Types
 export type User = typeof users.$inferSelect;
 export type InsertUser = z.infer<typeof insertUserSchema>;
@@ -220,3 +244,6 @@ export type InsertAiGeneration = z.infer<typeof insertAiGenerationSchema>;
 
 export type CloudinaryConfig = typeof cloudinaryConfig.$inferSelect;
 export type InsertCloudinaryConfig = z.infer<typeof insertCloudinaryConfigSchema>;
+
+export type OpenrouterConfig = typeof openrouterConfig.$inferSelect;
+export type InsertOpenrouterConfig = z.infer<typeof insertOpenrouterConfigSchema>;