diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 8384b2545..2332d2e60 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -362,7 +362,7 @@ class Coder:
         return files_messages
 
     def get_images_message(self):
-        if not utils.is_gpt4_with_openai_base_url(self.main_model.name):
+        if not self.main_model.accepts_images:
             return None
 
         image_messages = []
diff --git a/aider/commands.py b/aider/commands.py
index 68343e1ec..3bd0bab9d 100644
--- a/aider/commands.py
+++ b/aider/commands.py
@@ -10,7 +10,7 @@ from prompt_toolkit.completion import Completion
 
 from aider import prompts, voice
 from aider.scrape import Scraper
-from aider.utils import is_gpt4_with_openai_base_url, is_image_file
+from aider.utils import is_image_file
 
 from .dump import dump  # noqa: F401
 
@@ -200,7 +200,7 @@ class Commands:
 
         # only switch to image model token count if gpt4 and openai and image in files
         image_in_chat = False
-        if is_gpt4_with_openai_base_url(self.coder.main_model.name, self.coder.client):
+        if self.coder.main_model.accepts_images:
             image_in_chat = any(
                 is_image_file(relative_fname)
                 for relative_fname in self.coder.get_inchat_relative_files()
@@ -378,9 +378,7 @@ class Commands:
             if abs_file_path in self.coder.abs_fnames:
                 self.io.tool_error(f"{matched_file} is already in the chat")
             else:
-                if is_image_file(matched_file) and not is_gpt4_with_openai_base_url(
-                    self.coder.main_model.name, self.coder.client
-                ):
+                if is_image_file(matched_file) and not self.coder.main_model.accepts_images:
                     self.io.tool_error(
                         f"Cannot add image file {matched_file} as the model does not support image"
                         " files"
diff --git a/aider/models.py b/aider/models.py
index 8e52ceb92..d25658eaa 100644
--- a/aider/models.py
+++ b/aider/models.py
@@ -27,6 +27,7 @@ class ModelSettings:
     weak_model_name: str = "gpt-3.5-turbo-0125"
     use_repo_map: bool = False
     send_undo_reply: bool = False
+    accepts_images: bool = False
 
 
 # https://platform.openai.com/docs/models/gpt-4-and-gpt-4-turbo
@@ -57,6 +58,14 @@ MODEL_SETTINGS = [
         "udiff",
         use_repo_map=True,
         send_undo_reply=True,
+        accepts_images=True,
+    ),
+    ModelSettings(
+        "gpt-4-turbo",
+        "udiff",
+        use_repo_map=True,
+        send_undo_reply=True,
+        accepts_images=True,
     ),
     ModelSettings(
         "gpt-4-0125-preview",
@@ -75,6 +84,7 @@ MODEL_SETTINGS = [
         "diff",
         use_repo_map=True,
         send_undo_reply=True,
+        accepts_images=True,
     ),
     ModelSettings(
         "gpt-4-0613",
diff --git a/aider/sendchat.py b/aider/sendchat.py
index dd07e5363..a36f967b4 100644
--- a/aider/sendchat.py
+++ b/aider/sendchat.py
@@ -10,7 +10,6 @@ import openai
 from openai import APIConnectionError, InternalServerError, RateLimitError
 
 from aider.dump import dump  # noqa: F401
-from aider.utils import is_gpt4_with_openai_base_url
 
 CACHE_PATH = "~/.aider.send.cache.v1"
 CACHE = None
@@ -40,17 +39,6 @@ def send_with_retries(model_name, messages, functions, stream):
     if functions is not None:
         kwargs["functions"] = functions
 
-    # Check conditions to switch to gpt-4-vision-preview or strip out image_url messages
-    if is_gpt4_with_openai_base_url(model_name):
-        if any(
-            isinstance(msg.get("content"), list)
-            and any("image_url" in item for item in msg.get("content") if isinstance(item, dict))
-            for msg in messages
-        ):
-            kwargs["model"] = "gpt-4-vision-preview"
-            # gpt-4-vision is limited to max tokens of 4096
-            kwargs["max_tokens"] = 4096
-
     key = json.dumps(kwargs, sort_keys=True).encode()
 
     # Generate SHA1 hash of kwargs and append it to chat_completion_call_hashes
diff --git a/aider/utils.py b/aider/utils.py
index 7033f8dd3..98b70ac45 100644
--- a/aider/utils.py
+++ b/aider/utils.py
@@ -104,14 +104,3 @@ def show_messages(messages, title=None, functions=None):
 
     if functions:
         dump(functions)
-
-
-# TODO: fix this
-def is_gpt4_with_openai_base_url(model_name):
-    """
-    Check if the model_name starts with 'gpt-4' and the client base URL includes 'api.openai.com'.
-
-    :param model_name: The name of the model to check.
-    :return: True if conditions are met, False otherwise.
-    """
-    return model_name.startswith("gpt-4")