diff --git a/langchain/chains/moderation.py b/langchain/chains/moderation.py
index f0ec4afd..32b1b471 100644
--- a/langchain/chains/moderation.py
+++ b/langchain/chains/moderation.py
@@ -39,7 +39,10 @@ class OpenAIModerationChain(Chain):
             values, "openai_api_key", "OPENAI_API_KEY"
         )
         openai_organization = get_from_dict_or_env(
-            values, "openai_organization", "OPENAI_ORGANIZATION", default=None
+            values,
+            "openai_organization",
+            "OPENAI_ORGANIZATION",
+            default="",
         )
         try:
             import openai
diff --git a/langchain/chat_models/azure_openai.py b/langchain/chat_models/azure_openai.py
index 849a82ac..0b052d5f 100644
--- a/langchain/chat_models/azure_openai.py
+++ b/langchain/chat_models/azure_openai.py
@@ -69,7 +69,10 @@ class AzureChatOpenAI(ChatOpenAI):
             "OPENAI_API_TYPE",
         )
         openai_organization = get_from_dict_or_env(
-            values, "openai_organization", "OPENAI_ORGANIZATION", default=None
+            values,
+            "openai_organization",
+            "OPENAI_ORGANIZATION",
+            default="",
         )
         try:
             import openai
diff --git a/langchain/chat_models/openai.py b/langchain/chat_models/openai.py
index f05c9ec4..667934d8 100644
--- a/langchain/chat_models/openai.py
+++ b/langchain/chat_models/openai.py
@@ -152,7 +152,10 @@ class ChatOpenAI(BaseChatModel):
             values, "openai_api_key", "OPENAI_API_KEY"
         )
         openai_organization = get_from_dict_or_env(
-            values, "openai_organization", "OPENAI_ORGANIZATION", default=None
+            values,
+            "openai_organization",
+            "OPENAI_ORGANIZATION",
+            default="",
         )
         try:
             import openai
diff --git a/langchain/embeddings/openai.py b/langchain/embeddings/openai.py
index 6c206ebc..c66fd226 100644
--- a/langchain/embeddings/openai.py
+++ b/langchain/embeddings/openai.py
@@ -160,7 +160,10 @@ class OpenAIEmbeddings(BaseModel, Embeddings):
             values, "openai_api_key", "OPENAI_API_KEY"
         )
         openai_organization = get_from_dict_or_env(
-            values, "openai_organization", "OPENAI_ORGANIZATION", default=None
+            values,
+            "openai_organization",
+            "OPENAI_ORGANIZATION",
+            default="",
         )
         try:
             import openai
diff --git a/langchain/llms/openai.py b/langchain/llms/openai.py
index 66c2d70a..02be32ec 100644
--- a/langchain/llms/openai.py
+++ b/langchain/llms/openai.py
@@ -205,7 +205,10 @@ class BaseOpenAI(BaseLLM):
             values, "openai_api_key", "OPENAI_API_KEY"
         )
         openai_organization = get_from_dict_or_env(
-            values, "openai_organization", "OPENAI_ORGANIZATION", default=None
+            values,
+            "openai_organization",
+            "OPENAI_ORGANIZATION",
+            default="",
         )
         try:
             import openai
@@ -596,7 +599,7 @@ class OpenAIChat(BaseLLM):
             values, "openai_api_key", "OPENAI_API_KEY"
         )
         openai_organization = get_from_dict_or_env(
-            values, "openai_organization", "OPENAI_ORGANIZATION", default=None
+            values, "openai_organization", "OPENAI_ORGANIZATION", default=""
         )
         try:
             import openai