diff --git a/homeassistant/components/openai_conversation/config_flow.py b/homeassistant/components/openai_conversation/config_flow.py
index 7304eb52da3..102d1bf012c 100644
--- a/homeassistant/components/openai_conversation/config_flow.py
+++ b/homeassistant/components/openai_conversation/config_flow.py
@@ -63,6 +63,7 @@ from .const import (
     RECOMMENDED_WEB_SEARCH_CONTEXT_SIZE,
     RECOMMENDED_WEB_SEARCH_USER_LOCATION,
     UNSUPPORTED_MODELS,
+    WEB_SEARCH_MODELS,
 )
 
 _LOGGER = logging.getLogger(__name__)
@@ -160,9 +161,10 @@ class OpenAIOptionsFlow(OptionsFlow):
                     errors[CONF_CHAT_MODEL] = "model_not_supported"
 
                 if user_input.get(CONF_WEB_SEARCH):
-                    if not user_input.get(
-                        CONF_CHAT_MODEL, RECOMMENDED_CHAT_MODEL
-                    ).startswith("gpt-4o"):
+                    if (
+                        user_input.get(CONF_CHAT_MODEL, RECOMMENDED_CHAT_MODEL)
+                        not in WEB_SEARCH_MODELS
+                    ):
                         errors[CONF_WEB_SEARCH] = "web_search_not_supported"
                     elif user_input.get(CONF_WEB_SEARCH_USER_LOCATION):
                         user_input.update(await self.get_location_data())
diff --git a/homeassistant/components/openai_conversation/const.py b/homeassistant/components/openai_conversation/const.py
index 41abc504219..f022b4840eb 100644
--- a/homeassistant/components/openai_conversation/const.py
+++ b/homeassistant/components/openai_conversation/const.py
@@ -41,3 +41,12 @@ UNSUPPORTED_MODELS: list[str] = [
     "gpt-4o-mini-realtime-preview",
     "gpt-4o-mini-realtime-preview-2024-12-17",
 ]
+
+WEB_SEARCH_MODELS: list[str] = [
+    "gpt-4.1",
+    "gpt-4.1-mini",
+    "gpt-4o",
+    "gpt-4o-search-preview",
+    "gpt-4o-mini",
+    "gpt-4o-mini-search-preview",
+]
diff --git a/homeassistant/components/openai_conversation/strings.json b/homeassistant/components/openai_conversation/strings.json
index 42baf40d470..0a07fa354b2 100644
--- a/homeassistant/components/openai_conversation/strings.json
+++ b/homeassistant/components/openai_conversation/strings.json
@@ -40,7 +40,7 @@
     },
     "error": {
       "model_not_supported": "This model is not supported, please select a different model",
-      "web_search_not_supported": "Web search is only supported for gpt-4o and gpt-4o-mini models"
+      "web_search_not_supported": "Web search is not supported by this model"
     }
   },
   "selector": {