diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 3f672e8..a1b4201 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -10,10 +10,11 @@ on:
 env:
   UPSTASH_VECTOR_REST_URL: ${{ secrets.UPSTASH_VECTOR_REST_URL }}
   UPSTASH_VECTOR_REST_TOKEN: ${{ secrets.UPSTASH_VECTOR_REST_TOKEN }}
-  UPSTASH_REDIS_REST_URL: ${{secrets.UPSTASH_REDIS_REST_URL}}
-  UPSTASH_REDIS_REST_TOKEN: ${{secrets.UPSTASH_REDIS_REST_TOKEN}}
-  OPENAI_API_KEY: ${{secrets.OPENAI_API_KEY}}
-  QSTASH_TOKEN: ${{secrets.QSTASH_TOKEN}}
+  UPSTASH_REDIS_REST_URL: ${{ secrets.UPSTASH_REDIS_REST_URL }}
+  UPSTASH_REDIS_REST_TOKEN: ${{ secrets.UPSTASH_REDIS_REST_TOKEN }}
+  OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
+  OPENAI_ORGANIZATION: ${{ secrets.OPENAI_ORGANIZATION }}
+  QSTASH_TOKEN: ${{ secrets.QSTASH_TOKEN }}
 
 jobs:
   test:
diff --git a/src/config.ts b/src/config.ts
index b037295..0e38904 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -62,11 +62,12 @@ const initializeRedis = () => {
 const initializeModel = () => {
   const qstashToken = process.env.QSTASH_TOKEN;
   const openAIToken = process.env.OPENAI_API_KEY;
+  const organization = process.env.OPENAI_ORGANIZATION;
 
   if (qstashToken) return upstash("meta-llama/Meta-Llama-3-8B-Instruct", { apiKey: qstashToken });
 
   if (openAIToken) {
-    return openai("gpt-4o", { apiKey: openAIToken });
+    return openai("gpt-4o", { apiKey: openAIToken, organization });
   }
 
   throw new Error(
diff --git a/src/models.ts b/src/models.ts
index b89fc6c..58b2aec 100644
--- a/src/models.ts
+++ b/src/models.ts
@@ -60,6 +60,7 @@ export type LLMClientConfig = {
   logprobs?: boolean;
   topLogprobs?: number;
   openAIApiKey?: string;
+  organization?: string;
   apiKey?: string;
   baseUrl: string;
 };
@@ -170,6 +171,7 @@ const setupAnalytics = (
 
 const createLLMClient = (model: string, options: ModelOptions, provider?: Providers) => {
   const apiKey = options.apiKey ?? process.env.OPENAI_API_KEY ?? "";
+  const organization = options.organization ?? process.env.OPENAI_ORGANIZATION ?? "";
   const providerBaseUrl = options.baseUrl;
   if (!apiKey) {
     throw new Error(
@@ -189,11 +191,15 @@ const createLLMClient = (model: string, options: ModelOptions, provider?: Provid
     configuration: {
       baseURL: analyticsSetup.baseURL ?? providerBaseUrl,
       ...(analyticsSetup.defaultHeaders && { defaultHeaders: analyticsSetup.defaultHeaders }),
+      organization,
     },
   });
 };
 
-export const upstash = (model: UpstashChatModel, options?: Omit<ModelOptions, "baseUrl">) => {
+export const upstash = (
+  model: UpstashChatModel,
+  options?: Omit<ModelOptions, "baseUrl" | "organization">
+) => {
   const apiKey = options?.apiKey ?? process.env.QSTASH_TOKEN ?? "";
   if (!apiKey) {
     throw new Error(
@@ -208,7 +214,7 @@ export const upstash = (model: UpstashChatModel, options?: Omit<ModelOptions, "b
   );
 };
 
-export const custom = (model: string, options: ModelOptions) => {
+export const custom = (model: string, options: Omit<ModelOptions, "organization">) => {
   if (!options.baseUrl) throw new Error("baseUrl cannot be empty or undefined.");
   return createLLMClient(model, options, "custom");
 };
diff --git a/src/rag-chat.test.ts b/src/rag-chat.test.ts
index 034ce1d..a70a2e9 100644
--- a/src/rag-chat.test.ts
+++ b/src/rag-chat.test.ts
@@ -107,6 +107,13 @@ describe("RAG Chat with ratelimit", () => {
       verbose: false,
       temperature: 0,
       apiKey: process.env.OPENAI_API_KEY,
+      configuration: {
+        // if the OPENAI_ORGANIZATION env var is not set, the test may pass.
+        // we don't want it to pass so we pass a wrong key to make the test
+        // fail
+        // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing
+        organization: process.env.OPENAI_ORGANIZATION || "wrong-key",
+      },
     }),
     vector,
     redis,
@@ -124,7 +131,7 @@ describe("RAG Chat with ratelimit", () => {
     await vector.deleteNamespace(namespace);
   });
 
-  test(
+  test.only(
     "should throw ratelimit error",
     async () => {
       let remainingLimit = -9;
@@ -176,6 +183,9 @@ describe("RAG Chat with custom template", () => {
       verbose: false,
       temperature: 0,
       apiKey: process.env.OPENAI_API_KEY,
+      configuration: {
+        organization: process.env.OPENAI_ORGANIZATION,
+      },
     }),
   });
 
@@ -225,6 +235,9 @@ describe("RAG Chat addContext using PDF", () => {
       verbose: false,
       temperature: 0,
       apiKey: process.env.OPENAI_API_KEY,
+      configuration: {
+        organization: process.env.OPENAI_ORGANIZATION,
+      },
     }),
   });
 
@@ -267,6 +280,9 @@ describe("RAG Chat without Redis, but In-memory chat history", () => {
       verbose: false,
       temperature: 0,
       apiKey: process.env.OPENAI_API_KEY,
+      configuration: {
+        organization: process.env.OPENAI_ORGANIZATION,
+      },
     }),
     vector,
     namespace,
@@ -324,6 +340,9 @@ describe("RAG Chat addContext using CSV", () => {
       verbose: false,
       temperature: 0,
       apiKey: process.env.OPENAI_API_KEY,
+      configuration: {
+        organization: process.env.OPENAI_ORGANIZATION,
+      },
     }),
   });
 
@@ -366,6 +385,9 @@ describe("RAG Chat addContext using text-file", () => {
       verbose: false,
       temperature: 0,
       apiKey: process.env.OPENAI_API_KEY,
+      configuration: {
+        organization: process.env.OPENAI_ORGANIZATION,
+      },
     }),
   });
 
@@ -412,6 +434,9 @@ describe("RAG Chat addContext using HTML", () => {
       verbose: false,
       temperature: 0,
       apiKey: process.env.OPENAI_API_KEY,
+      configuration: {
+        organization: process.env.OPENAI_ORGANIZATION,
+      },
     }),
   });
 
@@ -793,6 +818,9 @@ describe("RAG Chat with disableHistory option", () => {
       verbose: false,
       temperature: 0,
       apiKey: process.env.OPENAI_API_KEY,
+      configuration: {
+        organization: process.env.OPENAI_ORGANIZATION,
+      },
     }),
     vector,
     redis,