diff --git a/app/client/platforms/openai.ts b/app/client/platforms/openai.ts
index 8ea864692..196d76902 100644
--- a/app/client/platforms/openai.ts
+++ b/app/client/platforms/openai.ts
@@ -18,6 +18,14 @@ import { prettyObject } from "@/app/utils/format";
 import { getClientConfig } from "@/app/config/client";
 import { makeAzurePath } from "@/app/azure";
 
+//# for AdEx custom usage tracking (calls per model per user per datekey)
+// import { NextApiRequest, NextApiResponse } from 'next';
+import { getServerAuthSession } from '../../auth'; // Adjust the import path as necessary
+import { incrementAPICallCount } from '../../utils/cloud/redisRestClient';
+// app\utils\cloud\redisRestClient.ts
+// app\client\platforms\openai.ts
+// app\auth.ts
+
 export interface OpenAIListModelResponse {
   object: string;
   data: Array<{
@@ -94,6 +102,30 @@ export class ChatGPTApi implements LLMApi {
 
     console.log("[Request] openai payload: ", requestPayload);
 
+
+
+    // export default async function handler(req: NextApiRequest, res: NextApiResponse) {
+      // Retrieve the session using getServerAuthSession
+      const session = await getServerAuthSession()(req);
+
+      if (session?.user?.email) {
+        // Now you have the user's email from the session
+        const userEmail = session.user.email;
+        const modelIdentifier = modelConfig.mode; 
+        const dateKey = new Date().toISOString().slice(0, 7); // "YYYY-MM"
+        console.log("API Call: ",token.email, modelIdentifier);
+
+        // Use the userEmail to increment the API call count
+        await incrementAPICallCount(userEmail, modelIdentifier, dateKey);
+
+        // ... rest of your API route logic ...
+      } else {
+        // Handle cases where the session or email is not available
+        res.status(401).json({ error: 'Unauthorized' });
+      }
+    // }
+
+
     const shouldStream = !!options.config.stream;
     const controller = new AbortController();
     options.onController?.(controller);
diff --git a/app/utils/cloud/redisRestClient.ts b/app/utils/cloud/redisRestClient.ts
index ffc1a85cb..6e51c51b9 100644
--- a/app/utils/cloud/redisRestClient.ts
+++ b/app/utils/cloud/redisRestClient.ts
@@ -68,6 +68,31 @@ export const incrementSessionRefreshCount = async (
   }
 };
 
+export const incrementAPICallCount = async (
+  email: string | undefined,
+  modelIdentifier: string,
+  dateKey: string
+): Promise<void> => {
+  if (!email || !modelIdentifier) {
+    console.error('Email or model identifier is undefined, cannot increment API call count.');
+    return; // This is fine for a function returning Promise<void>
+  }
+
+  const redis = getRedisClient();
+  if (!redis) {
+    console.error('Redis client is not initialized.');
+    return; // This is fine for a function returning Promise<void>
+  }
+
+  const key = `api_calls:${email}:${modelIdentifier}`;
+
+  try {
+    await redis.hincrby(key, dateKey, 1);
+  } catch (error) {
+    console.error('Failed to increment API call count in Redis via Upstash', error);
+  }
+};
+
 
 export const incrementTokenCounts = async (
   email: string | undefined,