diff --git a/backend/onyx/llm/chat_llm.py b/backend/onyx/llm/chat_llm.py
index 3d1cd9d9659..e7b94af0bcb 100644
--- a/backend/onyx/llm/chat_llm.py
+++ b/backend/onyx/llm/chat_llm.py
@@ -27,6 +27,7 @@
 
 from onyx.configs.app_configs import LOG_DANSWER_MODEL_INTERACTIONS
 from onyx.configs.app_configs import MOCK_LLM_RESPONSE
+from onyx.configs.chat_configs import QA_TIMEOUT
 from onyx.configs.model_configs import (
     DISABLE_LITELLM_STREAMING,
 )
@@ -35,6 +36,7 @@
 from onyx.llm.interfaces import LLM
 from onyx.llm.interfaces import LLMConfig
 from onyx.llm.interfaces import ToolChoiceOptions
+from onyx.llm.utils import model_is_reasoning_model
 from onyx.server.utils import mask_string
 from onyx.utils.logger import setup_logger
 from onyx.utils.long_term_log import LongTermLogger
@@ -229,15 +231,15 @@ class DefaultMultiLLM(LLM):
     def __init__(
         self,
         api_key: str | None,
-        timeout: int,
         model_provider: str,
         model_name: str,
+        timeout: int | None = None,
         api_base: str | None = None,
         api_version: str | None = None,
         deployment_name: str | None = None,
         max_output_tokens: int | None = None,
         custom_llm_provider: str | None = None,
-        temperature: float = GEN_AI_TEMPERATURE,
+        temperature: float | None = None,
         custom_config: dict[str, str] | None = None,
         extra_headers: dict[str, str] | None = None,
         extra_body: dict | None = LITELLM_EXTRA_BODY,
@@ -245,9 +247,16 @@ def __init__(
         long_term_logger: LongTermLogger | None = None,
     ):
         self._timeout = timeout
+        if timeout is None:
+            if model_is_reasoning_model(model_name):
+                self._timeout = QA_TIMEOUT * 10  # Reasoning models are slow
+            else:
+                self._timeout = QA_TIMEOUT
+
+        self._temperature = GEN_AI_TEMPERATURE if temperature is None else temperature
+
         self._model_provider = model_provider
         self._model_version = model_name
-        self._temperature = temperature
         self._api_key = api_key
         self._deployment_name = deployment_name
         self._api_base = api_base
diff --git a/backend/onyx/llm/factory.py b/backend/onyx/llm/factory.py
index 8e720a756b8..dff83e07f33 100644
--- a/backend/onyx/llm/factory.py
+++ b/backend/onyx/llm/factory.py
@@ -2,7 +2,6 @@
 
 from onyx.chat.models import PersonaOverrideConfig
 from onyx.configs.app_configs import DISABLE_GENERATIVE_AI
-from onyx.configs.chat_configs import QA_TIMEOUT
 from onyx.configs.model_configs import GEN_AI_MODEL_FALLBACK_MAX_TOKENS
 from onyx.configs.model_configs import GEN_AI_TEMPERATURE
 from onyx.db.engine import get_session_context_manager
@@ -88,8 +87,8 @@ def _create_llm(model: str) -> LLM:
 
 
 def get_default_llms(
-    timeout: int = QA_TIMEOUT,
-    temperature: float = GEN_AI_TEMPERATURE,
+    timeout: int | None = None,
+    temperature: float | None = None,
     additional_headers: dict[str, str] | None = None,
     long_term_logger: LongTermLogger | None = None,
 ) -> tuple[LLM, LLM]:
@@ -138,7 +137,7 @@ def get_llm(
     api_version: str | None = None,
     custom_config: dict[str, str] | None = None,
     temperature: float | None = None,
-    timeout: int = QA_TIMEOUT,
+    timeout: int | None = None,
     additional_headers: dict[str, str] | None = None,
     long_term_logger: LongTermLogger | None = None,
 ) -> LLM:
diff --git a/backend/onyx/llm/llm_provider_options.py b/backend/onyx/llm/llm_provider_options.py
index 409d409a837..3767552238a 100644
--- a/backend/onyx/llm/llm_provider_options.py
+++ b/backend/onyx/llm/llm_provider_options.py
@@ -29,11 +29,11 @@ class WellKnownLLMProviderDescriptor(BaseModel):
 OPEN_AI_MODEL_NAMES = [
     "o3-mini",
     "o1-mini",
-    "o1-preview",
-    "o1-2024-12-17",
+    "o1",
     "gpt-4",
     "gpt-4o",
     "gpt-4o-mini",
+    "o1-preview",
     "gpt-4-turbo",
     "gpt-4-turbo-preview",
     "gpt-4-1106-preview",
diff --git a/backend/onyx/llm/utils.py b/backend/onyx/llm/utils.py
index 48c6e12ef22..04fc2260c74 100644
--- a/backend/onyx/llm/utils.py
+++ b/backend/onyx/llm/utils.py
@@ -543,3 +543,14 @@ def model_supports_image_input(model_name: str, model_provider: str) -> bool:
             f"Failed to get model object for {model_provider}/{model_name}"
         )
         return False
+
+
+def model_is_reasoning_model(model_name: str) -> bool:
+    _REASONING_MODEL_NAMES = [
+        "o1",
+        "o1-mini",
+        "o3-mini",
+        "deepseek-reasoner",
+        "deepseek-r1",
+    ]
+    return model_name.lower() in _REASONING_MODEL_NAMES
diff --git a/web/src/lib/hooks.ts b/web/src/lib/hooks.ts
index 8005b707fcc..ff09b77035a 100644
--- a/web/src/lib/hooks.ts
+++ b/web/src/lib/hooks.ts
@@ -647,11 +647,11 @@ export const useUserGroups = (): {
 
 const MODEL_DISPLAY_NAMES: { [key: string]: string } = {
   // OpenAI models
-  "o1-2025-12-17": "O1 (December 2025)",
-  "o3-mini": "O3 Mini",
-  "o1-mini": "O1 Mini",
-  "o1-preview": "O1 Preview",
-  o1: "O1",
+  "o1-2025-12-17": "o1 (December 2025)",
+  "o3-mini": "o3 Mini",
+  "o1-mini": "o1 Mini",
+  "o1-preview": "o1 Preview",
+  o1: "o1",
   "gpt-4": "GPT 4",
   "gpt-4o": "GPT 4o",
   "gpt-4o-2024-08-06": "GPT 4o (Structured Outputs)",
@@ -753,14 +753,7 @@ export function getDisplayNameForModel(modelName: string): string {
 }
 
 export const defaultModelsByProvider: { [name: string]: string[] } = {
-  openai: [
-    "gpt-4",
-    "gpt-4o",
-    "gpt-4o-mini",
-    "o3-mini",
-    "o1-mini",
-    "o1-preview",
-  ],
+  openai: ["gpt-4", "gpt-4o", "gpt-4o-mini", "o3-mini", "o1-mini", "o1"],
   bedrock: [
     "meta.llama3-1-70b-instruct-v1:0",
     "meta.llama3-1-8b-instruct-v1:0",