diff --git a/chatgpt.sh b/chatgpt.sh
index 81df29a..d543acf 100755
--- a/chatgpt.sh
+++ b/chatgpt.sh
@@ -13,11 +13,18 @@ PROCESSING_LABEL="\n\033[90mProcessing... \033[0m\033[0K\r"
 OVERWRITE_PROCESSING_LINE="             \033[0K\r"
 
 if [[ -z "$OPENAI_KEY" ]]; then
-	echo "You need to set your OPENAI_KEY to use this script"
+	echo "You need to set your OPENAI_KEY and OPENAI_BASE_URL(optional) to use this script"
 	echo "You can set it temporarily by running this on your terminal: export OPENAI_KEY=YOUR_KEY_HERE"
 	exit 1
 fi
 
+if [[ -z "$OPENAI_BASE_URL" ]]; then
+	OPENAI_BASE_URL="https://api.openai.com"
+	echo "Use official api url."
+else
+	echo "Use \"${OPENAI_BASE_URL}\" as api url."
+fi
+
 usage() {
 	cat <<EOF
 A simple, lightweight shell script to use OpenAI's Language Models and DALL-E from the terminal without installing Python or Node.js. Open Source and written in 100% Shell (Bash) 
@@ -81,7 +88,7 @@ handle_error() {
 # request to openAI API models endpoint. Returns a list of models
 # takes no input parameters
 list_models() {
-	models_response=$(curl https://api.openai.com/v1/models \
+	models_response=$(curl ${OPENAI_BASE_URL}/v1/models \
 		-sS \
 		-H "Authorization: Bearer $OPENAI_KEY")
 	handle_error "$models_response"
@@ -94,7 +101,7 @@ list_models() {
 request_to_completions() {
 	local prompt="$1"
 
-	curl https://api.openai.com/v1/completions \
+	curl ${OPENAI_BASE_URL}/v1/completions \
 		-sS \
 		-H 'Content-Type: application/json' \
 		-H "Authorization: Bearer $OPENAI_KEY" \
@@ -110,7 +117,7 @@ request_to_completions() {
 # $1 should be the prompt
 request_to_image() {
 	local prompt="$1"
-	image_response=$(curl https://api.openai.com/v1/images/generations \
+	image_response=$(curl ${OPENAI_BASE_URL}/v1/images/generations \
 		-sS \
 		-H 'Content-Type: application/json' \
 		-H "Authorization: Bearer $OPENAI_KEY" \
@@ -127,7 +134,7 @@ request_to_chat() {
 	local message="$1"
 	escaped_system_prompt=$(escape "$SYSTEM_PROMPT")
 	
-	curl https://api.openai.com/v1/chat/completions \
+	curl ${OPENAI_BASE_URL}/v1/chat/completions \
 		-sS \
 		-H 'Content-Type: application/json' \
 		-H "Authorization: Bearer $OPENAI_KEY" \
@@ -367,7 +374,7 @@ while $running; do
 	elif [[ "$prompt" == "models" ]]; then
 		list_models
 	elif [[ "$prompt" =~ ^model: ]]; then
-		models_response=$(curl https://api.openai.com/v1/models \
+		models_response=$(curl ${OPENAI_BASE_URL}/v1/models \
 			-sS \
 			-H "Authorization: Bearer $OPENAI_KEY")
 		handle_error "$models_response"