diff --git a/portkey_ai/api_resources/base_client.py b/portkey_ai/api_resources/base_client.py
index 19d370e8..cd25194c 100644
--- a/portkey_ai/api_resources/base_client.py
+++ b/portkey_ai/api_resources/base_client.py
@@ -21,7 +21,7 @@
 
 from portkey_ai.api_resources.apis.create_headers import createHeaders
 from .global_constants import PORTKEY_HEADER_PREFIX, DEFAULT_CONNECTION_LIMITS
-from .utils import remove_empty_values, Options, set_base_url
+from .utils import remove_empty_values, Options, set_base_url, create_model_instance
 from .exceptions import (
     APIStatusError,
     APITimeoutError,
@@ -177,7 +177,7 @@ def __init__(
             **kwargs,
         )
 
-        self.allHeaders = self._build_headers(Options.construct())
+        self.allHeaders = self._build_headers(create_model_instance(Options))
         self._client = http_client or httpx.Client(
             base_url=self.base_url,
             headers={
@@ -508,7 +508,7 @@ def _construct_generate_options(
         params: Mapping[str, str],
         headers: Mapping[str, str],
     ) -> Options:
-        opts = Options.construct()
+        opts = create_model_instance(Options)
         opts.method = method
         opts.url = url
         json_body = body
@@ -528,7 +528,7 @@ def _construct(
         params: Mapping[str, str],
         headers: Mapping[str, str],
     ) -> Options:
-        opts = Options.construct()
+        opts = create_model_instance(Options)
         opts.method = method
         opts.url = url
         opts.files = files
@@ -890,7 +890,7 @@ def __init__(
             **kwargs,
         )
 
-        self.allHeaders = self._build_headers(Options.construct())
+        self.allHeaders = self._build_headers(create_model_instance(Options))
         self._client = http_client or AsyncHttpxClientWrapper(
             base_url=self.base_url,
             headers={
@@ -1221,7 +1221,7 @@ async def _construct_generate_options(
         params: Mapping[str, str],
         headers: Mapping[str, str],
     ) -> Options:
-        opts = Options.construct()
+        opts = create_model_instance(Options)
         opts.method = method
         opts.url = url
         json_body = body
@@ -1241,7 +1241,7 @@ async def _construct(
         params: Mapping[str, str],
         headers: Mapping[str, str],
     ) -> Options:
-        opts = Options.construct()
+        opts = create_model_instance(Options)
         opts.method = method
         opts.url = url
         opts.files = files
diff --git a/portkey_ai/api_resources/utils.py b/portkey_ai/api_resources/utils.py
index 776c96d5..40967730 100644
--- a/portkey_ai/api_resources/utils.py
+++ b/portkey_ai/api_resources/utils.py
@@ -1,5 +1,7 @@
-import os
+from __future__ import annotations
+
 import json
+import os
 from typing import List, Dict, Any, Optional, Union, Mapping, Literal, TypeVar, cast
 from enum import Enum, EnumMeta
 from typing_extensions import TypedDict, NotRequired
@@ -509,3 +511,19 @@ def set_base_url(base_url, api_key):
         return env_base_url
     api_key = api_key or os.environ.get(PORTKEY_API_KEY_ENV)
     return PORTKEY_BASE_URL if api_key else LOCAL_BASE_URL
+
+
+def create_model_instance(model_class):
+    """
+    Create a model instance that's compatible with both Pydantic v1 and v2.
+
+    This function provides backward compatibility for the transition from Pydantic v1
+    to Pydantic v2. In Pydantic v1, the method was called `construct()`, while in
+    Pydantic v2, it was renamed to `model_construct()`.
+    """
+    try:
+        # Try Pydantic v2 method first
+        return model_class.model_construct()
+    except AttributeError:
+        # Fall back to Pydantic v1 method
+        return model_class.construct()