diff --git a/superpipe/clients.py b/superpipe/clients.py
index daa23b1..af2c23e 100644
--- a/superpipe/clients.py
+++ b/superpipe/clients.py
@@ -1,6 +1,7 @@
 import requests
 import os
 from openai import OpenAI
+from openai import AzureOpenAI
 from anthropic import Anthropic
 from superpipe.models import *
 
@@ -10,10 +11,17 @@
 openrouter_models = []
 
 
-def init_openai(api_key, base_url=None):
-    openai_client = OpenAI(api_key=api_key, base_url=base_url)
-    client_for_model[gpt35] = openai_client
-    client_for_model[gpt4] = openai_client
+def init_openai(api_key, base_url=None, api_version=None):
+    if base_url and api_version:
+        openai_client = AzureOpenAI(api_key=api_key,
+                                    azure_endpoint=base_url,
+                                    api_version=api_version)
+        client_for_model[gpt35] = openai_client
+        client_for_model[gpt4] = openai_client
+    else:
+        openai_client = OpenAI(api_key=api_key)
+        client_for_model[gpt35] = openai_client
+        client_for_model[gpt4] = openai_client
 
 
 def init_anthropic(api_key):
@@ -45,8 +53,13 @@ def get_client(model):
     if client_for_model.get(gpt35) is None or \
             client_for_model.get(gpt4) is None:
         api_key = os.getenv("OPENAI_API_KEY")
+        base_url, api_version = None, None
+        if client_for_model.get("OPENAI_API_BASE") is None:
+            base_url = os.getenv("OPENAI_API_BASE")
+        if client_for_model.get("OPEN_API_VERSION") is None:
+            api_version = os.getenv("OPENAI_API_VERSION")
         if api_key is not None:
-            init_openai(api_key)
+            init_openai(api_key, base_url, api_version)
     if client_for_model.get(claude3_haiku) is None or \
             client_for_model.get(claude3_sonnet) is None or \
             client_for_model.get(claude3_opus) is None:
diff --git a/superpipe/llm.py b/superpipe/llm.py
index 5c61bc9..651ea61 100644
--- a/superpipe/llm.py
+++ b/superpipe/llm.py
@@ -193,7 +193,11 @@ def get_structured_llm_response_openai(
         args: CompletionCreateParamsNonStreaming = {}) -> StructuredLLMResponse:
     system = "You are a helpful assistant designed to output JSON."
     updated_args = {**args, "response_format": {"type": "json_object"}}
+
     response = get_llm_response_openai(prompt, model, updated_args, system)
+    if response.error:  # models before 1163 do not support response_format param
+        response = get_llm_response_openai(prompt, model, args, system)
+
     return StructuredLLMResponse(
         input_tokens=response.input_tokens,
         output_tokens=response.output_tokens,