Fix thread selection issue and improve thread titles

- Add thread_id prefix to titles for uniqueness (fixes Streamlit selectbox issue with duplicate titles)
- Handle image-only messages with 📸 Image title
- Remove o1-mini (doesn't support tools)
- Add gpt-5 model support

Author: hirune924

README.md

@@ -17,7 +17,7 @@ A reference implementation for building chat applications with LangGraph and Str
 
 ## Implemented Providers
 
-- **OpenAI**: GPT-4o, GPT-4 Turbo, o1, o3-mini
+- **OpenAI**: GPT-5, GPT-4o, GPT-4o-mini, GPT-4 Turbo, GPT-4, o1, o3-mini
 - **Anthropic**: Claude Sonnet 4, Claude 3.7 Sonnet, Claude 3.5 Sonnet/Haiku
 
 Additional providers can be easily added by implementing the `AgentConfig` interface (see [Adding Custom Agents](#adding-custom-agents)).

app/agents/openai_agent.py

@@ -26,12 +26,12 @@ def render_options() -> dict[str, Any]:
         options["model"] = st.selectbox(
             "Model",
             [
+                "gpt-5",
                 "gpt-4o",
                 "gpt-4o-mini",
                 "gpt-4-turbo",
                 "gpt-4",
                 "o1",
-                "o1-mini",
                 "o3-mini",
             ],
             index=0,
@@ -40,7 +40,7 @@ def render_options() -> dict[str, Any]:
         )
 
         # o1/o3 models don't support temperature parameter
-        is_thinking_model = options["model"] in ["o1", "o1-mini", "o3-mini"]
+        is_thinking_model = options["model"] in ["o1", "o3-mini"]
 
         if not is_thinking_model:
             options["temperature"] = st.slider(

app/utils.py

@@ -106,29 +106,48 @@ def get_threads(checkpoint: SqliteSaver) -> tuple[list[str], str | None]:
 
 
 def get_thread_title(thread_id: str) -> str:
-    """Get the title for a thread based on its first message."""
+    """Get the title for a thread based on its first message.
+
+    Includes thread_id prefix to ensure uniqueness in the UI.
+    """
     tup = st.session_state.checkpoint.get_tuple({"configurable": {"thread_id": thread_id}})
     if not tup:
-        return "New thread"
+        return f"[{thread_id[:8]}] New thread"
 
     messages = getattr(tup, "checkpoint", {}).get("channel_values", {}).get("messages", [])
     if not messages:
-        return "New thread"
+        return f"[{thread_id[:8]}] New thread"
 
     content = getattr(messages[0], "content", None)
+    title = None
+    has_image = False
 
     # String content
     if isinstance(content, str) and content.strip():
-        return content.strip().splitlines()[0]
+        title = content.strip().splitlines()[0]
 
     # List content (multimodal)
-    if isinstance(content, list):
+    elif isinstance(content, list):
         for part in content:
-            if isinstance(part, dict) and part.get("type") == "text":
+            if not isinstance(part, dict):
+                continue
+
+            part_type = part.get("type")
+            if part_type == "text":
                 if text := part.get("text", "").strip():
-                    return text.splitlines()[0]
+                    title = text.splitlines()[0]
+                    break
+            elif part_type == "image_url":
+                has_image = True
+
+    if title:
+        return f"[{thread_id[:8]}] {title}"
+
+    # Image-only message
+    if has_image:
+        return f"[{thread_id[:8]}] 📸 Image"
 
-    return "New thread"
+    return f"[{thread_id[:8]}] New thread"
 
 
 def on_delete_thread(thread_id: str) -> None: