diff --git a/tradingagents/llm_clients/model_catalog.py b/tradingagents/llm_clients/model_catalog.py
index b72aa6b20..47f9b5e16 100644
--- a/tradingagents/llm_clients/model_catalog.py
+++ b/tradingagents/llm_clients/model_catalog.py
@@ -34,14 +34,14 @@ MODEL_OPTIONS: ProviderModeOptions = {
         "quick": [
             ("GPT-5.4 Mini - Fast, strong coding and tool use", "gpt-5.4-mini"),
             ("GPT-5.4 Nano - Cheapest, high-volume tasks", "gpt-5.4-nano"),
-            ("GPT-5.4 - Latest frontier, 1M context", "gpt-5.4"),
+            ("GPT-5.5 - Latest frontier, 1M context", "gpt-5.5"),
             ("GPT-4.1 - Smartest non-reasoning model", "gpt-4.1"),
         ],
         "deep": [
-            ("GPT-5.4 - Latest frontier, 1M context", "gpt-5.4"),
+            ("GPT-5.5 - Latest frontier, 1M context", "gpt-5.5"),
+            ("GPT-5.4 - Previous-gen frontier, 1M context, cost-effective", "gpt-5.4"),
             ("GPT-5.2 - Strong reasoning, cost-effective", "gpt-5.2"),
-            ("GPT-5.4 Mini - Fast, strong coding and tool use", "gpt-5.4-mini"),
-            ("GPT-5.4 Pro - Most capable, expensive ($30/$180 per 1M tokens)", "gpt-5.4-pro"),
+            ("GPT-5.5 Pro - Most capable, expensive ($30/$180 per 1M tokens)", "gpt-5.5-pro"),
         ],
     },
     "anthropic": {