add gpt 5 display names (#5175)

(cherry picked from commit 297c2957b4)

backend/onyx/llm/chat_llm.py

@@ -397,7 +397,11 @@ class DefaultMultiLLM(LLM):
                 # streaming choice
                 stream=stream,
                 # model params
-                temperature=self._temperature,
+                temperature=(
+                    1
+                    if self.config.model_name in ["gpt-5", "gpt-5-mini", "gpt-5-nano"]
+                    else self._temperature
+                ),
                 timeout=timeout_override or self._timeout,
                 # For now, we don't support parallel tool calls
                 # NOTE: we can't pass this in if tools are not specified

backend/onyx/llm/llm_provider_options.py

@@ -47,6 +47,9 @@ class WellKnownLLMProviderDescriptor(BaseModel):
 
 OPENAI_PROVIDER_NAME = "openai"
 OPEN_AI_MODEL_NAMES = [
+    "gpt-5",
+    "gpt-5-mini",
+    "gpt-5-nano",
     "o4-mini",
     "o3-mini",
     "o1-mini",
@@ -73,7 +76,14 @@ OPEN_AI_MODEL_NAMES = [
     "gpt-3.5-turbo-16k-0613",
     "gpt-3.5-turbo-0301",
 ]
-OPEN_AI_VISIBLE_MODEL_NAMES = ["o1", "o3-mini", "gpt-4o", "gpt-4o-mini"]
+OPEN_AI_VISIBLE_MODEL_NAMES = [
+    "gpt-5",
+    "gpt-5-mini",
+    "o1",
+    "o3-mini",
+    "gpt-4o",
+    "gpt-4o-mini",
+]
 
 BEDROCK_PROVIDER_NAME = "bedrock"
 # need to remove all the weird "bedrock/eu-central-1/anthropic.claude-v1" named

web/src/lib/hooks.ts

@@ -679,6 +679,8 @@ const MODEL_DISPLAY_NAMES: { [key: string]: string } = {
   "o1-mini": "o1 Mini",
   "o1-preview": "o1 Preview",
   o1: "o1",
+  "gpt-5": "GPT 5",
+  "gpt-5-mini": "GPT 5 Mini",
   "gpt-4.1": "GPT 4.1",
   "gpt-4": "GPT 4",
   "gpt-4o": "GPT 4o",