diff --git a/providers/openai/responses_options.go b/providers/openai/responses_options.go
index 88dba7f42ae5af4aa4304aff64ccb2bb15c86525..935d97a1d78dcc56c80064ee0334de93cb9a17aa 100644
--- a/providers/openai/responses_options.go
+++ b/providers/openai/responses_options.go
@@ -151,6 +151,9 @@ var responsesReasoningModelIDs = []string{
 	"gpt-5-nano",
 	"gpt-5-nano-2025-08-07",
 	"gpt-5-codex",
+	"gpt-5.1",
+	"gpt-5.1-codex",
+	"gpt-5.1-codex-mini",
 }
 
 // responsesModelIds lists all model IDs for OpenAI Responses API.